home *** CD-ROM | disk | FTP | other *** search
/ Club Amiga de Montreal - CAM / CAM_CD_1.iso / files / 236.lha / PlPlot_v1.0 / docs / chapter3.tex < prev    next >
LaTeX Document  |  1989-04-29  |  23.0 KB

open in: MacOS 8.1     |     Win98     |     DOS

view JSON data     |     view as text

This file was processed as: LaTeX Document (document/latex).

You can browse this item here: chapter3.tex

ConfidenceProgramDetectionMatch TypeSupport
100% dexvert LaTeX Document (document/latex) magic Supported
1% dexvert Text File (text/txt) fallback Supported
100% file LaTeX document text default
99% file LaTeX document, ASCII text default
100% checkBytes Printable ASCII default
100% perlTextCheck Likely Text (Perl) default
100% siegfried fmt/281 LaTeX (Subdocument) default
100% detectItEasy Format: plain text[LF] default (weak)



hex view
+--------+-------------------------+-------------------------+--------+--------+
|00000000| 5c 63 68 61 70 74 65 72 | 20 7b 41 64 76 61 6e 63 |\chapter| {Advanc|
|00000010| 65 64 20 55 73 65 20 6f | 66 20 50 4c 50 4c 4f 54 |ed Use o|f PLPLOT|
|00000020| 7d 5c 6c 61 62 65 6c 7b | 61 64 76 61 6e 63 65 64 |}\label{|advanced|
|00000030| 7d 0a 0a 49 6e 20 74 68 | 69 73 20 63 68 61 70 74 |}..In th|is chapt|
|00000040| 65 72 2c 20 77 65 20 64 | 65 73 63 72 69 62 65 20 |er, we d|escribe |
|00000050| 6d 6f 72 65 20 70 72 65 | 63 69 73 65 6c 79 20 68 |more pre|cisely h|
|00000060| 6f 77 20 74 6f 20 63 6f | 6e 74 72 6f 6c 20 74 68 |ow to co|ntrol th|
|00000070| 65 20 70 6f 73 69 74 69 | 6f 6e 0a 61 6e 64 20 73 |e positi|on.and s|
|00000080| 63 61 6c 69 6e 67 20 6f | 66 20 61 20 67 72 61 70 |caling o|f a grap|
|00000090| 68 2c 20 68 6f 77 20 74 | 6f 20 61 6c 74 65 72 20 |h, how t|o alter |
|000000a0| 74 68 65 20 6c 6f 77 2d | 6c 65 76 65 6c 20 6c 69 |the low-|level li|
|000000b0| 6e 65 20 61 6e 64 20 63 | 68 61 72 61 63 74 65 72 |ne and c|haracter|
|000000c0| 0a 61 74 74 72 69 62 75 | 74 65 73 2c 20 61 6e 64 |.attribu|tes, and|
|000000d0| 20 68 6f 77 20 74 6f 20 | 75 73 65 20 74 68 65 20 | how to |use the |
|000000e0| 66 75 6e 63 74 69 6f 6e | 73 20 69 6e 20 50 4c 50 |function|s in PLP|
|000000f0| 4c 4f 54 20 66 6f 72 20 | 64 72 61 77 69 6e 67 20 |LOT for |drawing |
|00000100| 0a 74 68 72 65 65 2d 64 | 69 6d 65 6e 73 69 6f 6e |.three-d|imension|
|00000110| 61 6c 20 73 75 72 66 61 | 63 65 20 70 6c 6f 74 73 |al surfa|ce plots|
|00000120| 20 61 6e 64 20 63 6f 6e | 74 6f 75 72 20 70 6c 6f | and con|tour plo|
|00000130| 74 73 2e 20 0a 0a 5c 73 | 65 63 74 69 6f 6e 20 7b |ts. ..\s|ection {|
|00000140| 42 61 73 69 63 20 50 4c | 50 4c 4f 54 20 43 6f 6e |Basic PL|PLOT Con|
|00000150| 63 65 70 74 73 7d 0a 0a | 57 68 65 6e 20 64 72 61 |cepts}..|When dra|
|00000160| 77 69 6e 67 20 61 20 67 | 72 61 70 68 2c 20 74 68 |wing a g|raph, th|
|00000170| 65 20 70 72 6f 67 72 61 | 6d 6d 65 72 20 75 73 75 |e progra|mmer usu|
|00000180| 61 6c 6c 79 20 77 69 73 | 68 65 73 20 74 6f 20 73 |ally wis|hes to s|
|00000190| 70 65 63 69 66 79 20 74 | 68 65 0a 63 6f 6f 72 64 |pecify t|he.coord|
|000001a0| 69 6e 61 74 65 73 20 6f | 66 20 74 68 65 20 70 6f |inates o|f the po|
|000001b0| 69 6e 74 73 20 74 6f 20 | 62 65 20 70 6c 6f 74 74 |ints to |be plott|
|000001c0| 65 64 20 69 6e 20 74 65 | 72 6d 73 20 6f 66 20 74 |ed in te|rms of t|
|000001d0| 68 65 20 76 61 6c 75 65 | 73 20 6f 66 20 74 68 65 |he value|s of the|
|000001e0| 0a 76 61 72 69 61 62 6c | 65 73 20 69 6e 76 6f 6c |.variabl|es invol|
|000001f0| 76 65 64 2e 20 54 68 65 | 73 65 20 63 6f 6f 72 64 |ved. The|se coord|
|00000200| 69 6e 61 74 65 73 20 61 | 72 65 20 63 61 6c 6c 65 |inates a|re calle|
|00000210| 64 20 7b 5c 65 6d 20 77 | 6f 72 6c 64 0a 63 6f 6f |d {\em w|orld.coo|
|00000220| 72 64 69 6e 61 74 65 73 | 7d 2c 20 61 6e 64 20 6d |rdinates|}, and m|
|00000230| 61 79 20 68 61 76 65 20 | 61 6e 79 20 66 6c 6f 61 |ay have |any floa|
|00000240| 74 69 6e 67 2d 70 6f 69 | 6e 74 20 76 61 6c 75 65 |ting-poi|nt value|
|00000250| 20 72 65 70 72 65 73 65 | 6e 74 61 62 6c 65 20 62 | represe|ntable b|
|00000260| 79 20 74 68 65 0a 63 6f | 6d 70 75 74 65 72 2e 20 |y the.co|mputer. |
|00000270| 54 68 65 20 7b 5c 65 6d | 20 77 69 6e 64 6f 77 7d |The {\em| window}|
|00000280| 20 72 65 66 65 72 73 20 | 74 6f 20 74 68 65 20 72 | refers |to the r|
|00000290| 65 63 74 61 6e 67 75 6c | 61 72 20 72 65 67 69 6f |ectangul|ar regio|
|000002a0| 6e 20 6f 66 0a 77 6f 72 | 6c 64 2d 63 6f 6f 72 64 |n of.wor|ld-coord|
|000002b0| 69 6e 61 74 65 20 73 70 | 61 63 65 20 77 68 69 63 |inate sp|ace whic|
|000002c0| 68 20 69 73 20 74 6f 20 | 62 65 20 67 72 61 70 68 |h is to |be graph|
|000002d0| 65 64 2e 20 54 68 69 73 | 20 77 69 6e 64 6f 77 20 |ed. This| window |
|000002e0| 69 73 20 6d 61 70 70 65 | 64 0a 6f 6e 74 6f 20 61 |is mappe|d.onto a|
|000002f0| 20 72 65 63 74 61 6e 67 | 75 6c 61 72 20 72 65 67 | rectang|ular reg|
|00000300| 69 6f 6e 20 6f 66 20 74 | 68 65 20 7b 5c 65 6d 20 |ion of t|he {\em |
|00000310| 76 69 65 77 20 73 75 72 | 66 61 63 65 7d 2c 20 77 |view sur|face}, w|
|00000320| 68 69 63 68 20 69 73 20 | 28 61 0a 70 6f 72 74 69 |hich is |(a.porti|
|00000330| 6f 6e 29 20 6f 66 20 74 | 68 65 20 73 63 72 65 65 |on) of t|he scree|
|00000340| 6e 20 6f 72 20 73 68 65 | 65 74 20 6f 66 20 70 61 |n or she|et of pa|
|00000350| 70 65 72 20 69 6e 20 74 | 68 65 20 6f 75 74 70 75 |per in t|he outpu|
|00000360| 74 20 64 65 76 69 63 65 | 2e 20 54 68 69 73 0a 70 |t device|. This.p|
|00000370| 68 79 73 69 63 61 6c 20 | 72 65 67 69 6f 6e 20 6f |hysical |region o|
|00000380| 6e 74 6f 20 77 68 69 63 | 68 20 74 68 65 20 77 69 |nto whic|h the wi|
|00000390| 6e 64 6f 77 20 69 73 20 | 6d 61 70 70 65 64 20 69 |ndow is |mapped i|
|000003a0| 73 20 63 61 6c 6c 65 64 | 20 74 68 65 20 7b 5c 65 |s called| the {\e|
|000003b0| 6d 0a 76 69 65 77 70 6f | 72 74 7d 2e 20 42 65 66 |m.viewpo|rt}. Bef|
|000003c0| 6f 72 65 20 61 20 67 72 | 61 70 68 20 63 61 6e 20 |ore a gr|aph can |
|000003d0| 62 65 20 64 72 61 77 6e | 2c 20 74 68 65 20 70 72 |be drawn|, the pr|
|000003e0| 6f 67 72 61 6d 20 6d 75 | 73 74 20 64 65 66 69 6e |ogram mu|st defin|
|000003f0| 65 20 62 6f 74 68 20 74 | 68 65 0a 77 69 6e 64 6f |e both t|he.windo|
|00000400| 77 20 61 6e 64 20 74 68 | 65 20 76 69 65 77 70 6f |w and th|e viewpo|
|00000410| 72 74 20 62 79 20 63 61 | 6c 6c 69 6e 67 20 61 70 |rt by ca|lling ap|
|00000420| 70 72 6f 70 72 69 61 74 | 65 20 72 6f 75 74 69 6e |propriat|e routin|
|00000430| 65 73 20 69 6e 20 50 4c | 50 4c 4f 54 2e 0a 0a 5c |es in PL|PLOT...\|
|00000440| 73 65 63 74 69 6f 6e 20 | 7b 53 70 65 63 69 66 79 |section |{Specify|
|00000450| 69 6e 67 20 74 68 65 20 | 56 69 65 77 20 53 75 72 |ing the |View Sur|
|00000460| 66 61 63 65 7d 0a 0a 54 | 68 65 20 66 69 72 73 74 |face}..T|he first|
|00000470| 20 74 68 69 6e 67 20 74 | 68 61 74 20 61 20 67 72 | thing t|hat a gr|
|00000480| 61 70 68 69 63 73 20 70 | 72 6f 67 72 61 6d 20 6d |aphics p|rogram m|
|00000490| 75 73 74 20 64 6f 20 69 | 73 20 74 6f 20 74 65 6c |ust do i|s to tel|
|000004a0| 6c 20 50 4c 50 4c 4f 54 | 20 77 68 69 63 68 0a 64 |l PLPLOT| which.d|
|000004b0| 65 76 69 63 65 20 69 74 | 20 69 73 20 67 6f 69 6e |evice it| is goin|
|000004c0| 67 20 74 6f 20 75 73 65 | 2c 20 61 6e 64 20 68 6f |g to use|, and ho|
|000004d0| 77 20 74 68 69 73 20 64 | 65 76 69 63 65 20 69 73 |w this d|evice is|
|000004e0| 20 74 6f 20 62 65 20 64 | 69 76 69 64 65 64 20 75 | to be d|ivided u|
|000004f0| 70 20 66 6f 72 0a 67 72 | 61 70 68 20 70 6c 6f 74 |p for.gr|aph plot|
|00000500| 74 69 6e 67 2e 20 54 68 | 65 72 65 20 61 72 65 20 |ting. Th|ere are |
|00000510| 74 77 6f 20 72 6f 75 74 | 69 6e 65 73 20 74 68 61 |two rout|ines tha|
|00000520| 74 20 64 6f 20 74 68 69 | 73 2c 20 5c 72 6f 75 7b |t do thi|s, \rou{|
|00000530| 70 6c 73 74 61 72 7d 2c | 20 77 68 69 63 68 0a 70 |plstar},| which.p|
|00000540| 72 6f 6d 70 74 73 20 61 | 74 20 74 68 65 20 63 6f |rompts a|t the co|
|00000550| 6e 73 6f 6c 65 20 66 6f | 72 20 74 68 65 20 6f 75 |nsole fo|r the ou|
|00000560| 74 70 75 74 20 64 65 76 | 69 63 65 20 74 79 70 65 |tput dev|ice type|
|00000570| 20 61 6e 64 20 5c 72 6f | 75 7b 70 6c 62 65 67 7d | and \ro|u{plbeg}|
|00000580| 2c 20 77 68 69 63 68 0a | 65 78 70 65 63 74 73 20 |, which.|expects |
|00000590| 74 6f 20 62 65 20 73 75 | 70 70 6c 69 65 64 20 74 |to be su|pplied t|
|000005a0| 68 65 20 63 6f 64 65 20 | 6e 75 6d 62 65 72 20 6f |he code |number o|
|000005b0| 66 20 74 68 65 20 64 65 | 76 69 63 65 20 61 73 20 |f the de|vice as |
|000005c0| 61 6e 20 61 72 67 75 6d | 65 6e 74 2e 20 54 68 65 |an argum|ent. The|
|000005d0| 0a 63 6f 64 65 20 6e 75 | 6d 62 65 72 73 20 72 65 |.code nu|mbers re|
|000005e0| 71 75 69 72 65 64 20 62 | 79 20 7b 5c 74 74 20 70 |quired b|y {\tt p|
|000005f0| 6c 62 65 67 7d 20 61 72 | 65 20 74 68 65 20 73 61 |lbeg} ar|e the sa|
|00000600| 6d 65 20 61 73 20 64 69 | 73 70 6c 61 79 65 64 20 |me as di|splayed |
|00000610| 62 79 20 7b 5c 74 74 0a | 70 6c 73 74 61 72 7d 20 |by {\tt.|plstar} |
|00000620| 77 68 65 6e 20 69 74 20 | 70 72 6f 6d 70 74 73 20 |when it |prompts |
|00000630| 66 6f 72 20 61 20 64 65 | 76 69 63 65 2e 0a 0a 42 |for a de|vice...B|
|00000640| 65 73 69 64 65 73 20 73 | 65 6c 65 63 74 69 6e 67 |esides s|electing|
|00000650| 20 74 68 65 20 64 65 76 | 69 63 65 2c 20 7b 5c 74 | the dev|ice, {\t|
|00000660| 74 20 70 6c 73 74 61 72 | 7d 20 61 6e 64 20 7b 5c |t plstar|} and {\|
|00000670| 74 74 20 70 6c 62 65 67 | 7d 20 61 6c 6c 6f 77 20 |tt plbeg|} allow |
|00000680| 74 68 65 0a 75 73 65 72 | 20 74 6f 20 64 69 76 69 |the.user| to divi|
|00000690| 64 65 20 74 68 65 20 6f | 75 74 70 75 74 20 64 65 |de the o|utput de|
|000006a0| 76 69 63 65 20 70 6c 6f | 74 74 69 6e 67 20 61 72 |vice plo|tting ar|
|000006b0| 65 61 20 69 6e 74 6f 20 | 73 65 76 65 72 61 6c 20 |ea into |several |
|000006c0| 73 75 62 70 61 67 65 73 | 20 6f 66 0a 65 71 75 61 |subpages| of.equa|
|000006d0| 6c 20 73 69 7a 65 2c 20 | 65 61 63 68 20 6f 66 20 |l size, |each of |
|000006e0| 77 68 69 63 68 20 63 61 | 6e 20 62 65 20 75 73 65 |which ca|n be use|
|000006f0| 64 20 73 65 70 61 72 61 | 74 65 6c 79 2e 20 54 68 |d separa|tely. Th|
|00000700| 65 20 72 6f 75 74 69 6e | 65 20 7b 5c 74 74 0a 70 |e routin|e {\tt.p|
|00000710| 6c 61 64 76 7d 20 69 73 | 20 75 73 65 64 20 74 6f |ladv} is| used to|
|00000720| 20 61 64 76 61 6e 63 65 | 20 74 6f 20 61 20 70 61 | advance| to a pa|
|00000730| 72 74 69 63 75 6c 61 72 | 20 73 75 62 70 61 67 65 |rticular| subpage|
|00000740| 20 6f 72 20 74 6f 20 74 | 68 65 20 6e 65 78 74 0a | or to t|he next.|
|00000750| 73 75 62 70 61 67 65 2e | 20 54 68 65 20 73 63 72 |subpage.| The scr|
|00000760| 65 65 6e 20 69 73 20 63 | 6c 65 61 72 65 64 20 28 |een is c|leared (|
|00000770| 61 66 74 65 72 20 77 61 | 69 74 69 6e 67 20 66 6f |after wa|iting fo|
|00000780| 72 20 74 68 65 20 75 73 | 65 72 20 74 6f 20 73 65 |r the us|er to se|
|00000790| 6c 65 63 74 0a 43 6f 6e | 74 69 6e 75 65 20 66 72 |lect.Con|tinue fr|
|000007a0| 6f 6d 20 74 68 65 20 47 | 72 61 70 68 69 63 73 20 |om the G|raphics |
|000007b0| 43 6f 6e 74 72 6f 6c 20 | 6d 65 6e 75 20 6f 72 20 |Control |menu or |
|000007c0| 68 69 74 20 74 68 65 20 | 52 45 54 55 52 4e 20 6b |hit the |RETURN k|
|000007d0| 65 79 29 2c 20 0a 6f 72 | 20 61 20 6e 65 77 20 70 |ey), .or| a new p|
|000007e0| 69 65 63 65 20 6f 66 20 | 70 61 70 65 72 20 69 73 |iece of |paper is|
|000007f0| 20 6c 6f 61 64 65 64 2c | 20 69 66 20 61 0a 6e 65 | loaded,| if a.ne|
|00000800| 77 20 73 75 62 70 61 67 | 65 20 69 73 20 72 65 71 |w subpag|e is req|
|00000810| 75 65 73 74 65 64 20 77 | 68 65 6e 20 74 68 65 72 |uested w|hen ther|
|00000820| 65 20 61 72 65 20 6e 6f | 20 73 75 62 70 61 67 65 |e are no| subpage|
|00000830| 73 20 6c 65 66 74 20 6f | 6e 20 74 68 65 20 63 75 |s left o|n the cu|
|00000840| 72 72 65 6e 74 0a 70 61 | 67 65 2e 20 57 68 65 6e |rrent.pa|ge. When|
|00000850| 20 61 20 70 61 67 65 20 | 69 73 20 64 69 76 69 64 | a page |is divid|
|00000860| 65 64 20 69 6e 74 6f 20 | 73 75 62 70 61 67 65 73 |ed into |subpages|
|00000870| 2c 20 74 68 65 20 64 65 | 66 61 75 6c 74 20 63 68 |, the de|fault ch|
|00000880| 61 72 61 63 74 65 72 2c | 0a 73 79 6d 62 6f 6c 20 |aracter,|.symbol |
|00000890| 61 6e 64 20 74 69 63 6b | 20 73 69 7a 65 73 20 61 |and tick| sizes a|
|000008a0| 72 65 20 73 63 61 6c 65 | 64 20 69 6e 76 65 72 73 |re scale|d invers|
|000008b0| 65 6c 79 20 61 73 20 74 | 68 65 20 73 71 75 61 72 |ely as t|he squar|
|000008c0| 65 20 72 6f 6f 74 20 6f | 66 20 74 68 65 0a 6e 75 |e root o|f the.nu|
|000008d0| 6d 62 65 72 20 6f 66 20 | 73 75 62 70 61 67 65 73 |mber of |subpages|
|000008e0| 20 69 6e 20 74 68 65 20 | 76 65 72 74 69 63 61 6c | in the |vertical|
|000008f0| 20 64 69 72 65 63 74 69 | 6f 6e 2e 0a 0a 41 74 20 | directi|on...At |
|00000900| 74 68 65 20 65 6e 64 20 | 6f 66 20 61 20 70 6c 6f |the end |of a plo|
|00000910| 74 74 69 6e 67 20 70 72 | 6f 67 72 61 6d 2c 20 69 |tting pr|ogram, i|
|00000920| 74 20 69 73 20 69 6d 70 | 6f 72 74 61 6e 74 20 74 |t is imp|ortant t|
|00000930| 6f 20 63 6c 6f 73 65 20 | 74 68 65 20 70 6c 6f 74 |o close |the plot|
|00000940| 74 69 6e 67 0a 64 65 76 | 69 63 65 20 62 79 20 63 |ting.dev|ice by c|
|00000950| 61 6c 6c 69 6e 67 20 5c | 72 6f 75 7b 70 6c 65 6e |alling \|rou{plen|
|00000960| 64 7d 2e 20 54 68 69 73 | 20 66 6c 75 73 68 65 73 |d}. This| flushes|
|00000970| 20 61 6e 79 0a 69 6e 74 | 65 72 6e 61 6c 20 62 75 | any.int|ernal bu|
|00000980| 66 66 65 72 73 20 61 6e | 64 20 66 72 65 65 73 20 |ffers an|d frees |
|00000990| 61 6e 79 20 6d 65 6d 6f | 72 79 20 74 68 61 74 20 |any memo|ry that |
|000009a0| 6d 61 79 20 68 61 76 65 | 20 62 65 65 6e 20 61 6c |may have| been al|
|000009b0| 6c 6f 63 61 74 65 64 2e | 0a 4e 6f 74 65 20 74 68 |located.|.Note th|
|000009c0| 61 74 20 69 66 20 7b 5c | 74 74 20 70 6c 73 74 61 |at if {\|tt plsta|
|000009d0| 72 7d 20 0a 6f 72 20 7b | 5c 74 74 20 70 6c 62 65 |r} .or {|\tt plbe|
|000009e0| 67 7d 20 69 73 20 63 61 | 6c 6c 65 64 20 6d 6f 72 |g} is ca|lled mor|
|000009f0| 65 20 74 68 61 6e 20 6f | 6e 63 65 20 64 75 72 69 |e than o|nce duri|
|00000a00| 6e 67 20 61 20 70 72 6f | 67 72 61 6d 20 74 6f 0a |ng a pro|gram to.|
|00000a10| 63 68 61 6e 67 65 20 74 | 68 65 20 6f 75 74 70 75 |change t|he outpu|
|00000a20| 74 20 64 65 76 69 63 65 | 2c 20 61 6e 20 61 75 74 |t device|, an aut|
|00000a30| 6f 6d 61 74 69 63 20 63 | 61 6c 6c 20 74 6f 20 7b |omatic c|all to {|
|00000a40| 5c 74 74 20 70 6c 65 6e | 64 7d 20 69 73 20 6d 61 |\tt plen|d} is ma|
|00000a50| 64 65 0a 62 65 66 6f 72 | 65 20 74 68 65 20 6e 65 |de.befor|e the ne|
|00000a60| 77 20 64 65 76 69 63 65 | 20 69 73 20 6f 70 65 6e |w device| is open|
|00000a70| 65 64 2e 0a 0a 5c 73 65 | 63 74 69 6f 6e 20 7b 44 |ed...\se|ction {D|
|00000a80| 65 66 69 6e 69 6e 67 20 | 74 68 65 20 56 69 65 77 |efining |the View|
|00000a90| 70 6f 72 74 7d 20 5c 6c | 61 62 65 6c 7b 76 69 65 |port} \l|abel{vie|
|00000aa0| 77 70 6f 72 74 7d 0a 0a | 41 66 74 65 72 20 64 65 |wport}..|After de|
|00000ab0| 66 69 6e 69 6e 67 20 74 | 68 65 20 76 69 65 77 20 |fining t|he view |
|00000ac0| 73 75 72 66 61 63 65 2c | 20 69 74 20 69 73 20 6e |surface,| it is n|
|00000ad0| 65 63 65 73 73 61 72 79 | 20 74 6f 20 64 65 66 69 |ecessary| to defi|
|00000ae0| 6e 65 20 74 68 65 20 70 | 6f 72 74 69 6f 6e 0a 6f |ne the p|ortion.o|
|00000af0| 66 20 74 68 69 73 20 73 | 75 72 66 61 63 65 20 77 |f this s|urface w|
|00000b00| 68 69 63 68 20 69 73 20 | 74 6f 20 62 65 20 75 73 |hich is |to be us|
|00000b10| 65 64 20 66 6f 72 20 70 | 6c 6f 74 74 69 6e 67 20 |ed for p|lotting |
|00000b20| 74 68 65 20 67 72 61 70 | 68 2e 20 41 6c 6c 20 6c |the grap|h. All l|
|00000b30| 69 6e 65 73 0a 61 6e 64 | 20 73 79 6d 62 6f 6c 73 |ines.and| symbols|
|00000b40| 20 28 65 78 63 65 70 74 | 20 66 6f 72 20 6c 61 62 | (except| for lab|
|00000b50| 65 6c 73 20 64 72 61 77 | 6e 20 62 79 20 7b 5c 74 |els draw|n by {\t|
|00000b60| 74 20 70 6c 62 6f 78 7d | 2c 20 7b 5c 74 74 20 70 |t plbox}|, {\tt p|
|00000b70| 6c 6d 74 65 78 7d 20 61 | 6e 64 20 0a 7b 5c 74 74 |lmtex} a|nd .{\tt|
|00000b80| 20 70 6c 6c 61 62 7d 29 | 20 61 72 65 20 63 6c 69 | pllab})| are cli|
|00000b90| 70 70 65 64 20 61 74 20 | 74 68 65 20 76 69 65 77 |pped at |the view|
|00000ba0| 70 6f 72 74 20 62 6f 75 | 6e 64 61 72 69 65 73 2e |port bou|ndaries.|
|00000bb0| 0a 0a 56 69 65 77 70 6f | 72 74 73 20 61 72 65 20 |..Viewpo|rts are |
|00000bc0| 63 72 65 61 74 65 64 20 | 77 69 74 68 69 6e 20 74 |created |within t|
|00000bd0| 68 65 20 63 75 72 72 65 | 6e 74 20 73 75 62 70 61 |he curre|nt subpa|
|00000be0| 67 65 2e 20 49 66 20 74 | 68 65 20 64 69 76 69 73 |ge. If t|he divis|
|00000bf0| 69 6f 6e 20 6f 66 20 74 | 68 65 0a 6f 75 74 70 75 |ion of t|he.outpu|
|00000c00| 74 20 64 65 76 69 63 65 | 20 69 6e 74 6f 20 65 71 |t device| into eq|
|00000c10| 75 61 6c 6c 79 20 73 69 | 7a 65 64 20 73 75 62 70 |ually si|zed subp|
|00000c20| 61 67 65 73 20 69 73 20 | 69 6e 61 70 70 72 6f 70 |ages is |inapprop|
|00000c30| 72 69 61 74 65 2c 20 69 | 74 20 69 73 20 62 65 73 |riate, i|t is bes|
|00000c40| 74 0a 74 6f 20 73 70 65 | 63 69 66 79 20 6f 6e 6c |t.to spe|cify onl|
|00000c50| 79 20 61 20 73 69 6e 67 | 6c 65 20 73 75 62 70 61 |y a sing|le subpa|
|00000c60| 67 65 20 77 68 69 63 68 | 20 6f 63 63 75 70 69 65 |ge which| occupie|
|00000c70| 73 20 74 68 65 20 65 6e | 74 69 72 65 20 6f 75 74 |s the en|tire out|
|00000c80| 70 75 74 20 64 65 76 69 | 63 65 0a 28 62 79 20 73 |put devi|ce.(by s|
|00000c90| 65 74 74 69 6e 67 20 7b | 5c 74 74 20 6e 78 3d 31 |etting {|\tt nx=1|
|00000ca0| 7d 20 61 6e 64 20 7b 5c | 74 74 20 6e 79 3d 31 7d |} and {\|tt ny=1}|
|00000cb0| 20 69 6e 20 7b 5c 74 74 | 20 70 6c 62 65 67 7d 20 | in {\tt| plbeg} |
|00000cc0| 6f 72 20 7b 5c 74 74 20 | 70 6c 73 74 61 72 7d 29 |or {\tt |plstar})|
|00000cd0| 2c 0a 61 6e 64 20 75 73 | 65 20 6f 6e 65 20 6f 66 |,.and us|e one of|
|00000ce0| 20 74 68 65 20 76 69 65 | 77 70 6f 72 74 20 73 70 | the vie|wport sp|
|00000cf0| 65 63 69 66 69 63 61 74 | 69 6f 6e 20 73 75 62 72 |ecificat|ion subr|
|00000d00| 6f 75 74 69 6e 65 73 20 | 62 65 6c 6f 77 20 74 6f |outines |below to|
|00000d10| 20 70 6c 61 63 65 20 74 | 68 65 0a 70 6c 6f 74 20 | place t|he.plot |
|00000d20| 69 6e 20 74 68 65 20 64 | 65 73 69 72 65 64 20 70 |in the d|esired p|
|00000d30| 6f 73 69 74 69 6f 6e 20 | 6f 6e 20 74 68 65 20 70 |osition |on the p|
|00000d40| 61 67 65 2e 0a 0a 54 68 | 65 72 65 20 61 72 65 20 |age...Th|ere are |
|00000d50| 74 77 6f 20 6d 65 74 68 | 6f 64 73 20 66 6f 72 20 |two meth|ods for |
|00000d60| 73 70 65 63 69 66 79 69 | 6e 67 20 74 68 65 20 76 |specifyi|ng the v|
|00000d70| 69 65 77 70 6f 72 74 20 | 73 69 7a 65 2c 20 75 73 |iewport |size, us|
|00000d80| 69 6e 67 20 74 68 65 0a | 73 75 62 72 6f 75 74 69 |ing the.|subrouti|
|00000d90| 6e 65 73 20 5c 72 6f 75 | 7b 70 6c 76 70 6f 72 7d |nes \rou|{plvpor}|
|00000da0| 20 61 6e 64 20 5c 72 6f | 75 7b 70 6c 73 76 70 61 | and \ro|u{plsvpa|
|00000db0| 7d 2e 20 45 61 63 68 20 | 6f 66 20 74 68 65 73 65 |}. Each |of these|
|00000dc0| 20 68 61 73 20 74 68 65 | 20 66 6f 72 6d 61 74 3a | has the| format:|
|00000dd0| 0a 5c 62 65 67 69 6e 7b | 76 65 72 62 61 74 69 6d |.\begin{|verbatim|
|00000de0| 7d 0a 70 6c 76 70 6f 72 | 28 78 6d 69 6e 2c 78 6d |}.plvpor|(xmin,xm|
|00000df0| 61 78 2c 79 6d 69 6e 2c | 79 6d 61 78 29 3b 0a 70 |ax,ymin,|ymax);.p|
|00000e00| 6c 73 76 70 61 28 78 6d | 69 6e 2c 78 6d 61 78 2c |lsvpa(xm|in,xmax,|
|00000e10| 79 6d 69 6e 2c 79 6d 61 | 78 29 3b 0a 5c 65 6e 64 |ymin,yma|x);.\end|
|00000e20| 7b 76 65 72 62 61 74 69 | 6d 7d 0a 77 68 65 72 65 |{verbati|m}.where|
|00000e30| 20 69 6e 20 74 68 65 20 | 63 61 73 65 20 6f 66 20 | in the |case of |
|00000e40| 7b 5c 74 74 20 70 6c 76 | 70 6f 72 7d 2c 20 74 68 |{\tt plv|por}, th|
|00000e50| 65 20 61 72 67 75 6d 65 | 6e 74 73 20 61 72 65 20 |e argume|nts are |
|00000e60| 67 69 76 65 6e 20 69 6e | 20 7b 5c 65 6d 0a 6e 6f |given in| {\em.no|
|00000e70| 72 6d 61 6c 69 7a 65 64 | 20 73 75 62 70 61 67 65 |rmalized| subpage|
|00000e80| 20 63 6f 6f 72 64 69 6e | 61 74 65 73 7d 20 77 68 | coordin|ates} wh|
|00000e90| 69 63 68 20 61 72 65 20 | 64 65 66 69 6e 65 64 20 |ich are |defined |
|00000ea0| 74 6f 20 72 75 6e 20 66 | 72 6f 6d 20 30 2e 30 20 |to run f|rom 0.0 |
|00000eb0| 74 6f 20 31 2e 30 0a 61 | 6c 6f 6e 67 20 65 61 63 |to 1.0.a|long eac|
|00000ec0| 68 20 65 64 67 65 20 6f | 66 20 74 68 65 20 73 75 |h edge o|f the su|
|00000ed0| 62 70 61 67 65 2e 20 54 | 68 75 73 20 66 6f 72 20 |bpage. T|hus for |
|00000ee0| 65 78 61 6d 70 6c 65 2c | 0a 5c 62 65 67 69 6e 7b |example,|.\begin{|
|00000ef0| 76 65 72 62 61 74 69 6d | 7d 0a 70 6c 76 70 6f 72 |verbatim|}.plvpor|
|00000f00| 28 30 2e 30 2c 30 2e 35 | 2c 30 2e 35 2c 31 2e 30 |(0.0,0.5|,0.5,1.0|
|00000f10| 29 3b 0a 5c 65 6e 64 7b | 76 65 72 62 61 74 69 6d |);.\end{|verbatim|
|00000f20| 7d 0a 75 73 65 73 20 74 | 68 65 20 74 6f 70 20 6c |}.uses t|he top l|
|00000f30| 65 66 74 20 71 75 61 72 | 74 65 72 20 6f 66 20 74 |eft quar|ter of t|
|00000f40| 68 65 20 63 75 72 72 65 | 6e 74 20 73 75 62 70 61 |he curre|nt subpa|
|00000f50| 67 65 2e 0a 0a 49 6e 20 | 6f 72 64 65 72 20 74 6f |ge...In |order to|
|00000f60| 20 67 65 74 20 61 20 67 | 72 61 70 68 20 6f 66 20 | get a g|raph of |
|00000f70| 6b 6e 6f 77 6e 20 70 68 | 79 73 69 63 61 6c 20 73 |known ph|ysical s|
|00000f80| 69 7a 65 2c 20 74 68 65 | 20 72 6f 75 74 69 6e 65 |ize, the| routine|
|00000f90| 20 7b 5c 74 74 20 70 6c | 73 76 70 61 7d 0a 64 65 | {\tt pl|svpa}.de|
|00000fa0| 66 69 6e 65 73 20 74 68 | 65 20 76 69 65 77 70 6f |fines th|e viewpo|
|00000fb0| 72 74 20 69 6e 20 74 65 | 72 6d 73 20 6f 66 20 61 |rt in te|rms of a|
|00000fc0| 62 73 6f 6c 75 74 65 0a | 63 6f 6f 72 64 69 6e 61 |bsolute.|coordina|
|00000fd0| 74 65 73 20 28 6d 69 6c | 6c 69 6d 65 74 72 65 73 |tes (mil|limetres|
|00000fe0| 29 20 6d 65 61 73 75 72 | 65 64 20 66 72 6f 6d 20 |) measur|ed from |
|00000ff0| 74 68 65 20 62 6f 74 74 | 6f 6d 20 6c 65 66 74 2d |the bott|om left-|
|00001000| 68 61 6e 64 20 63 6f 72 | 6e 65 72 20 6f 66 0a 74 |hand cor|ner of.t|
|00001010| 68 65 20 63 75 72 72 65 | 6e 74 20 73 75 62 70 61 |he curre|nt subpa|
|00001020| 67 65 2e 20 54 68 69 73 | 20 72 6f 75 74 69 6e 65 |ge. This| routine|
|00001030| 20 73 68 6f 75 6c 64 20 | 6f 6e 6c 79 20 62 65 20 | should |only be |
|00001040| 75 73 65 64 20 77 68 65 | 6e 20 74 68 65 20 73 69 |used whe|n the si|
|00001050| 7a 65 20 6f 66 0a 74 68 | 65 20 76 69 65 77 20 73 |ze of.th|e view s|
|00001060| 75 72 66 61 63 65 20 69 | 73 20 6b 6e 6f 77 6e 2c |urface i|s known,|
|00001070| 20 61 6e 64 20 61 20 64 | 65 66 69 6e 69 74 65 20 | and a d|efinite |
|00001080| 73 63 61 6c 69 6e 67 20 | 69 73 20 72 65 71 75 69 |scaling |is requi|
|00001090| 72 65 64 2e 0a 0a 54 6f | 20 68 65 6c 70 20 74 68 |red...To| help th|
|000010a0| 65 20 75 73 65 72 20 63 | 61 6c 6c 20 7b 5c 74 74 |e user c|all {\tt|
|000010b0| 20 70 6c 73 76 70 61 7d | 20 63 6f 72 72 65 63 74 | plsvpa}| correct|
|000010c0| 6c 79 2c 20 74 68 65 20 | 72 6f 75 74 69 6e 65 20 |ly, the |routine |
|000010d0| 5c 72 6f 75 7b 70 6c 67 | 73 70 61 7d 0a 69 73 20 |\rou{plg|spa}.is |
|000010e0| 70 72 6f 76 69 64 65 64 | 20 77 68 69 63 68 20 72 |provided| which r|
|000010f0| 65 74 75 72 6e 73 20 74 | 68 65 20 70 6f 73 69 74 |eturns t|he posit|
|00001100| 69 6f 6e 73 20 6f 66 20 | 74 68 65 20 65 78 74 72 |ions of |the extr|
|00001110| 65 6d 69 74 69 65 73 20 | 6f 66 20 74 68 65 0a 63 |emities |of the.c|
|00001120| 75 72 72 65 6e 74 20 73 | 75 62 70 61 67 65 20 6d |urrent s|ubpage m|
|00001130| 65 61 73 75 72 65 64 20 | 69 6e 20 6d 69 6c 6c 69 |easured |in milli|
|00001140| 6d 65 74 72 65 73 20 66 | 72 6f 6d 20 74 68 65 20 |metres f|rom the |
|00001150| 62 6f 74 74 6f 6d 20 6c | 65 66 74 2d 68 61 6e 64 |bottom l|eft-hand|
|00001160| 20 63 6f 72 6e 65 72 0a | 6f 66 20 74 68 65 20 64 | corner.|of the d|
|00001170| 65 76 69 63 65 2e 20 54 | 68 75 73 2c 20 69 66 20 |evice. T|hus, if |
|00001180| 74 6f 20 73 65 74 20 75 | 70 20 61 20 76 69 65 77 |to set u|p a view|
|00001190| 70 6f 72 74 20 77 69 74 | 68 20 61 20 31 30 2e 30 |port wit|h a 10.0|
|000011a0| 7e 6d 6d 20 6d 61 72 67 | 69 6e 0a 61 72 6f 75 6e |~mm marg|in.aroun|
|000011b0| 64 20 69 74 20 77 69 74 | 68 69 6e 20 74 68 65 20 |d it wit|hin the |
|000011c0| 63 75 72 72 65 6e 74 20 | 73 75 62 70 61 67 65 2c |current |subpage,|
|000011d0| 20 74 68 65 20 66 6f 6c | 6c 6f 77 69 6e 67 20 73 | the fol|lowing s|
|000011e0| 65 71 75 65 6e 63 65 20 | 6f 66 20 63 61 6c 6c 73 |equence |of calls|
|000011f0| 0a 6d 61 79 20 62 65 20 | 75 73 65 64 20 0a 5c 62 |.may be |used .\b|
|00001200| 65 67 69 6e 7b 76 65 72 | 62 61 74 69 6d 7d 0a 70 |egin{ver|batim}.p|
|00001210| 6c 67 73 70 61 28 78 6d | 69 6e 2c 78 6d 61 78 2c |lgspa(xm|in,xmax,|
|00001220| 79 6d 69 6e 2c 79 6d 61 | 78 29 3b 0a 70 6c 73 76 |ymin,yma|x);.plsv|
|00001230| 70 61 28 31 30 2e 30 2c | 78 6d 61 78 2d 78 6d 69 |pa(10.0,|xmax-xmi|
|00001240| 6e 2d 31 30 2e 30 2c 31 | 30 2e 30 2c 79 6d 61 78 |n-10.0,1|0.0,ymax|
|00001250| 2d 79 6d 69 6e 2d 31 30 | 2e 30 29 3b 0a 5c 65 6e |-ymin-10|.0);.\en|
|00001260| 64 7b 76 65 72 62 61 74 | 69 6d 7d 0a 41 20 66 75 |d{verbat|im}.A fu|
|00001270| 72 74 68 65 72 20 72 6f | 75 74 69 6e 65 20 5c 72 |rther ro|utine \r|
|00001280| 6f 75 7b 70 6c 76 73 74 | 61 7d 20 69 73 20 61 76 |ou{plvst|a} is av|
|00001290| 61 69 6c 61 62 6c 65 20 | 77 68 69 63 68 20 73 65 |ailable |which se|
|000012a0| 74 73 20 75 70 20 61 20 | 73 74 61 6e 64 61 72 64 |ts up a |standard|
|000012b0| 0a 76 69 65 77 70 6f 72 | 74 20 77 69 74 68 69 6e |.viewpor|t within|
|000012c0| 20 74 68 65 20 63 75 72 | 72 65 6e 74 20 73 75 62 | the cur|rent sub|
|000012d0| 70 61 67 65 20 77 69 74 | 68 20 73 75 69 74 61 62 |page wit|h suitab|
|000012e0| 6c 65 20 6d 61 72 67 69 | 6e 73 20 6f 6e 20 65 61 |le margi|ns on ea|
|000012f0| 63 68 20 73 69 64 65 0a | 6f 66 20 74 68 65 20 76 |ch side.|of the v|
|00001300| 69 65 77 70 6f 72 74 2e | 20 54 68 69 73 20 6d 61 |iewport.| This ma|
|00001310| 79 20 62 65 20 75 73 65 | 64 20 66 6f 72 20 73 69 |y be use|d for si|
|00001320| 6d 70 6c 65 20 67 72 61 | 70 68 73 2c 20 61 73 20 |mple gra|phs, as |
|00001330| 69 74 20 6c 65 61 76 65 | 73 20 65 6e 6f 75 67 68 |it leave|s enough|
|00001340| 0a 72 6f 6f 6d 20 66 6f | 72 20 61 78 69 73 20 6c |.room fo|r axis l|
|00001350| 61 62 65 6c 73 20 61 6e | 64 20 61 20 74 69 74 6c |abels an|d a titl|
|00001360| 65 2e 20 54 68 69 73 20 | 73 74 61 6e 64 61 72 64 |e. This |standard|
|00001370| 20 76 69 65 77 70 6f 72 | 74 20 69 73 20 74 68 61 | viewpor|t is tha|
|00001380| 74 20 75 73 65 64 20 62 | 79 0a 7b 5c 74 74 20 70 |t used b|y.{\tt p|
|00001390| 6c 65 6e 76 7d 20 28 73 | 65 65 20 53 65 63 74 69 |lenv} (s|ee Secti|
|000013a0| 6f 6e 20 5c 72 65 66 7b | 70 6c 65 6e 76 2d 73 65 |on \ref{|plenv-se|
|000013b0| 63 7d 29 2e 0a 0a 5c 73 | 65 63 74 69 6f 6e 20 7b |c})...\s|ection {|
|000013c0| 44 65 66 69 6e 69 6e 67 | 20 74 68 65 20 57 69 6e |Defining| the Win|
|000013d0| 64 6f 77 7d 20 5c 6c 61 | 62 65 6c 7b 77 69 6e 64 |dow} \la|bel{wind|
|000013e0| 6f 77 7d 0a 0a 54 68 65 | 20 77 69 6e 64 6f 77 20 |ow}..The| window |
|000013f0| 6d 75 73 74 20 62 65 20 | 64 65 66 69 6e 65 64 20 |must be |defined |
|00001400| 61 66 74 65 72 20 74 68 | 65 20 76 69 65 77 70 6f |after th|e viewpo|
|00001410| 72 74 20 69 6e 20 6f 72 | 64 65 72 20 74 6f 20 6d |rt in or|der to m|
|00001420| 61 70 20 74 68 65 20 77 | 6f 72 6c 64 0a 63 6f 6f |ap the w|orld.coo|
|00001430| 72 64 69 6e 61 74 65 20 | 72 65 63 74 61 6e 67 6c |rdinate |rectangl|
|00001440| 65 20 69 6e 74 6f 20 74 | 68 65 20 76 69 65 77 70 |e into t|he viewp|
|00001450| 6f 72 74 20 72 65 63 74 | 61 6e 67 6c 65 2e 20 54 |ort rect|angle. T|
|00001460| 68 65 20 72 6f 75 74 69 | 6e 65 0a 5c 72 6f 75 7b |he routi|ne.\rou{|
|00001470| 70 6c 77 69 6e 64 7d 20 | 69 73 20 75 73 65 64 20 |plwind} |is used |
|00001480| 74 6f 20 73 70 65 63 69 | 66 79 20 74 68 65 20 72 |to speci|fy the r|
|00001490| 65 63 74 61 6e 67 6c 65 | 20 69 6e 20 77 6f 72 6c |ectangle| in worl|
|000014a0| 64 2d 63 6f 6f 72 64 69 | 6e 61 74 65 20 73 70 61 |d-coordi|nate spa|
|000014b0| 63 65 2e 0a 46 6f 72 20 | 65 78 61 6d 70 6c 65 2c |ce..For |example,|
|000014c0| 20 69 66 20 77 65 20 77 | 69 73 68 20 74 6f 20 70 | if we w|ish to p|
|000014d0| 6c 6f 74 20 61 20 67 72 | 61 70 68 20 73 68 6f 77 |lot a gr|aph show|
|000014e0| 69 6e 67 20 74 68 65 20 | 63 6f 6c 6c 65 63 74 6f |ing the |collecto|
|000014f0| 72 20 63 75 72 72 65 6e | 74 0a 24 49 5f 43 24 20 |r curren|t.$I_C$ |
|00001500| 61 73 20 61 20 66 75 6e | 63 74 69 6f 6e 20 6f 66 |as a fun|ction of|
|00001510| 20 74 68 65 20 63 6f 6c | 6c 65 63 74 6f 72 20 74 | the col|lector t|
|00001520| 6f 20 65 6d 69 74 74 65 | 72 20 76 6f 6c 74 61 67 |o emitte|r voltag|
|00001530| 65 20 24 56 5f 7b 43 45 | 7d 24 20 66 6f 72 20 61 |e $V_{CE|}$ for a|
|00001540| 20 0a 74 72 61 6e 73 69 | 73 74 6f 72 20 77 68 65 | .transi|stor whe|
|00001550| 72 65 20 24 30 5c 6c 65 | 20 49 5f 43 5c 6c 65 20 |re $0\le| I_C\le |
|00001560| 31 30 2e 30 5c 6d 62 6f | 78 7b 5c 2c 6d 41 7d 24 |10.0\mbo|x{\,mA}$|
|00001570| 20 61 6e 64 20 24 30 5c | 6c 65 20 56 5f 7b 43 45 | and $0\|le V_{CE|
|00001580| 7d 5c 6c 65 0a 31 32 2e | 30 5c 6d 62 6f 78 7b 5c |}\le.12.|0\mbox{\|
|00001590| 2c 56 7d 24 2c 20 77 65 | 20 77 6f 75 6c 64 20 63 |,V}$, we| would c|
|000015a0| 61 6c 6c 20 74 68 65 20 | 66 75 6e 63 74 69 6f 6e |all the |function|
|000015b0| 20 7b 5c 74 74 20 70 6c | 77 69 6e 64 7d 20 61 73 | {\tt pl|wind} as|
|000015c0| 20 66 6f 6c 6c 6f 77 73 | 3a 0a 5c 62 65 67 69 6e | follows|:.\begin|
|000015d0| 7b 76 65 72 62 61 74 69 | 6d 7d 0a 70 6c 77 69 6e |{verbati|m}.plwin|
|000015e0| 64 28 30 2e 30 2c 31 32 | 2e 30 2c 30 2e 30 2c 31 |d(0.0,12|.0,0.0,1|
|000015f0| 30 2e 30 29 3b 0a 5c 65 | 6e 64 7b 76 65 72 62 61 |0.0);.\e|nd{verba|
|00001600| 74 69 6d 7d 0a 4e 6f 74 | 65 20 74 68 61 74 20 65 |tim}.Not|e that e|
|00001610| 61 63 68 20 6f 66 20 74 | 68 65 20 61 72 67 75 6d |ach of t|he argum|
|00001620| 65 6e 74 73 20 69 73 20 | 61 20 66 6c 6f 61 74 69 |ents is |a floati|
|00001630| 6e 67 20 70 6f 69 6e 74 | 20 6e 75 6d 62 65 72 2c |ng point| number,|
|00001640| 20 61 6e 64 20 73 6f 20 | 74 68 65 0a 64 65 63 69 | and so |the.deci|
|00001650| 6d 61 6c 20 70 6f 69 6e | 74 73 20 61 72 65 20 72 |mal poin|ts are r|
|00001660| 65 71 75 69 72 65 64 2e | 20 49 66 20 74 68 65 20 |equired.| If the |
|00001670| 6f 72 64 65 72 20 6f 66 | 20 65 69 74 68 65 72 20 |order of| either |
|00001680| 74 68 65 20 58 7e 6c 69 | 6d 69 74 73 20 6f 72 0a |the X~li|mits or.|
|00001690| 59 7e 6c 69 6d 69 74 73 | 20 69 73 20 72 65 76 65 |Y~limits| is reve|
|000016a0| 72 73 65 64 2c 20 74 68 | 65 20 63 6f 72 72 65 73 |rsed, th|e corres|
|000016b0| 70 6f 6e 64 69 6e 67 20 | 61 78 69 73 20 77 69 6c |ponding |axis wil|
|000016c0| 6c 20 70 6f 69 6e 74 20 | 69 6e 20 74 68 65 20 6f |l point |in the o|
|000016d0| 70 70 6f 73 69 74 65 0a | 73 65 6e 73 65 2c 20 28 |pposite.|sense, (|
|000016e0| 69 2e 65 2e 2c 20 72 69 | 67 68 74 20 74 6f 20 6c |i.e., ri|ght to l|
|000016f0| 65 66 74 20 66 6f 72 20 | 58 20 61 6e 64 20 74 6f |eft for |X and to|
|00001700| 70 20 74 6f 20 62 6f 74 | 74 6f 6d 20 66 6f 72 20 |p to bot|tom for |
|00001710| 59 29 2e 20 54 68 65 20 | 77 69 6e 64 6f 77 0a 6d |Y). The |window.m|
|00001720| 75 73 74 20 62 65 20 64 | 65 66 69 6e 65 64 20 62 |ust be d|efined b|
|00001730| 65 66 6f 72 65 20 61 6e | 79 20 63 61 6c 6c 73 20 |efore an|y calls |
|00001740| 74 6f 20 74 68 65 20 72 | 6f 75 74 69 6e 65 73 20 |to the r|outines |
|00001750| 77 68 69 63 68 20 61 63 | 74 75 61 6c 6c 79 20 64 |which ac|tually d|
|00001760| 72 61 77 20 74 68 65 0a | 64 61 74 61 20 70 6f 69 |raw the.|data poi|
|00001770| 6e 74 73 2e 20 4e 6f 74 | 65 20 68 6f 77 65 76 65 |nts. Not|e howeve|
|00001780| 72 20 74 68 61 74 20 7b | 5c 74 74 20 70 6c 77 69 |r that {|\tt plwi|
|00001790| 6e 64 7d 20 6d 61 79 20 | 61 6c 73 6f 20 62 65 20 |nd} may |also be |
|000017a0| 63 61 6c 6c 65 64 20 74 | 6f 20 63 68 61 6e 67 65 |called t|o change|
|000017b0| 0a 74 68 65 20 77 69 6e | 64 6f 77 20 61 74 20 61 |.the win|dow at a|
|000017c0| 6e 79 20 74 69 6d 65 2e | 20 54 68 69 73 20 77 69 |ny time.| This wi|
|000017d0| 6c 6c 20 61 66 66 65 63 | 74 20 74 68 65 20 61 70 |ll affec|t the ap|
|000017e0| 70 65 61 72 61 6e 63 65 | 20 6f 66 20 6f 62 6a 65 |pearance| of obje|
|000017f0| 63 74 73 20 64 72 61 77 | 6e 0a 6c 61 74 65 72 20 |cts draw|n.later |
|00001800| 69 6e 20 74 68 65 20 70 | 72 6f 67 72 61 6d 2c 20 |in the p|rogram, |
|00001810| 61 6e 64 20 69 73 20 75 | 73 65 66 75 6c 20 66 6f |and is u|seful fo|
|00001820| 72 20 64 72 61 77 69 6e | 67 20 74 77 6f 20 6f 72 |r drawin|g two or|
|00001830| 20 6d 6f 72 65 20 67 72 | 61 70 68 73 20 77 69 74 | more gr|aphs wit|
|00001840| 68 0a 64 69 66 66 65 72 | 65 6e 74 20 61 78 65 73 |h.differ|ent axes|
|00001850| 20 6f 6e 20 74 68 65 20 | 73 61 6d 65 20 70 69 65 | on the |same pie|
|00001860| 63 65 20 6f 66 20 70 61 | 70 65 72 2e 0a 0a 5c 73 |ce of pa|per...\s|
|00001870| 65 63 74 69 6f 6e 20 7b | 41 6e 6f 74 61 74 69 6e |ection {|Anotatin|
|00001880| 67 20 74 68 65 20 56 69 | 65 77 70 6f 72 74 7d 0a |g the Vi|ewport}.|
|00001890| 0a 54 68 65 20 72 6f 75 | 74 69 6e 65 20 5c 72 6f |.The rou|tine \ro|
|000018a0| 75 7b 70 6c 62 6f 78 7d | 20 69 73 20 75 73 65 64 |u{plbox}| is used|
|000018b0| 20 74 6f 20 73 70 65 63 | 69 66 79 20 77 68 65 74 | to spec|ify whet|
|000018c0| 68 65 72 20 61 20 66 72 | 61 6d 65 20 69 73 20 64 |her a fr|ame is d|
|000018d0| 72 61 77 6e 20 61 72 6f | 75 6e 64 0a 74 68 65 20 |rawn aro|und.the |
|000018e0| 76 69 65 77 70 6f 72 74 | 20 61 6e 64 20 74 6f 20 |viewport| and to |
|000018f0| 63 6f 6e 74 72 6f 6c 20 | 74 68 65 20 70 6f 73 69 |control |the posi|
|00001900| 74 69 6f 6e 73 20 6f 66 | 20 74 68 65 20 61 78 69 |tions of| the axi|
|00001910| 73 20 73 75 62 64 69 76 | 69 73 69 6f 6e 73 20 61 |s subdiv|isions a|
|00001920| 6e 64 20 0a 6e 75 6d 65 | 72 69 63 20 6c 61 62 65 |nd .nume|ric labe|
|00001930| 6c 73 2e 20 46 6f 72 20 | 6f 75 72 20 73 69 6d 70 |ls. For |our simp|
|00001940| 6c 65 20 67 72 61 70 68 | 20 6f 66 20 74 68 65 20 |le graph| of the |
|00001950| 74 72 61 6e 73 69 73 74 | 6f 72 20 63 68 61 72 61 |transist|or chara|
|00001960| 63 74 65 72 69 73 74 69 | 63 73 2c 0a 77 65 20 6d |cteristi|cs,.we m|
|00001970| 61 79 20 77 69 73 68 20 | 74 6f 20 64 72 61 77 20 |ay wish |to draw |
|00001980| 61 20 66 72 61 6d 65 20 | 63 6f 6e 73 69 73 74 69 |a frame |consisti|
|00001990| 6e 67 20 6f 66 20 6c 69 | 6e 65 73 20 6f 6e 20 61 |ng of li|nes on a|
|000019a0| 6c 6c 20 66 6f 75 72 20 | 73 69 64 65 73 20 6f 66 |ll four |sides of|
|000019b0| 20 74 68 65 0a 76 69 65 | 77 70 6f 72 74 2c 20 61 | the.vie|wport, a|
|000019c0| 6e 64 20 74 6f 20 70 6c | 61 63 65 20 6e 75 6d 65 |nd to pl|ace nume|
|000019d0| 72 69 63 20 6c 61 62 65 | 6c 73 20 61 6c 6f 6e 67 |ric labe|ls along|
|000019e0| 20 74 68 65 20 62 6f 74 | 74 6f 6d 20 61 6e 64 20 | the bot|tom and |
|000019f0| 6c 65 66 74 20 68 61 6e | 64 20 73 69 64 65 2e 0a |left han|d side..|
|00001a00| 57 65 20 63 61 6e 20 61 | 6c 73 6f 20 74 65 6c 6c |We can a|lso tell|
|00001a10| 20 50 4c 50 4c 4f 54 20 | 74 6f 20 63 68 6f 6f 73 | PLPLOT |to choos|
|00001a20| 65 20 61 20 73 75 69 74 | 61 62 6c 65 20 74 69 63 |e a suit|able tic|
|00001a30| 6b 20 69 6e 74 65 72 76 | 61 6c 20 61 6e 64 0a 74 |k interv|al and.t|
|00001a40| 68 65 20 6e 75 6d 62 65 | 72 20 6f 66 20 73 75 62 |he numbe|r of sub|
|00001a50| 74 69 63 6b 73 20 62 65 | 74 77 65 65 6e 20 74 68 |ticks be|tween th|
|00001a60| 65 20 6d 61 6a 6f 72 20 | 64 69 76 69 73 69 6f 6e |e major |division|
|00001a70| 73 20 62 61 73 65 64 20 | 75 70 6f 6e 20 74 68 65 |s based |upon the|
|00001a80| 0a 64 61 74 61 20 72 61 | 6e 67 65 20 73 70 65 63 |.data ra|nge spec|
|00001a90| 69 66 69 65 64 20 74 6f | 20 7b 5c 74 74 20 70 6c |ified to| {\tt pl|
|00001aa0| 77 69 6e 64 7d 2e 20 54 | 68 69 73 20 69 73 20 64 |wind}. T|his is d|
|00001ab0| 6f 6e 65 20 75 73 69 6e | 67 20 74 68 65 20 66 6f |one usin|g the fo|
|00001ac0| 6c 6c 6f 77 69 6e 67 0a | 73 74 61 74 65 6d 65 6e |llowing.|statemen|
|00001ad0| 74 0a 5c 62 65 67 69 6e | 7b 76 65 72 62 61 74 69 |t.\begin|{verbati|
|00001ae0| 6d 7d 0a 70 6c 62 6f 78 | 28 22 42 43 4e 53 54 22 |m}.plbox|("BCNST"|
|00001af0| 2c 30 2e 30 2c 30 2c 22 | 42 43 4e 53 54 56 22 2c |,0.0,0,"|BCNSTV",|
|00001b00| 30 2e 30 2c 30 29 3b 0a | 5c 65 6e 64 7b 76 65 72 |0.0,0);.|\end{ver|
|00001b10| 62 61 74 69 6d 7d 0a 41 | 6e 6f 74 68 65 72 20 72 |batim}.A|nother r|
|00001b20| 6f 75 74 69 6e 65 20 5c | 72 6f 75 7b 70 6c 6c 61 |outine \|rou{plla|
|00001b30| 62 7d 20 70 72 6f 76 69 | 64 65 73 20 66 6f 72 20 |b} provi|des for |
|00001b40| 74 65 78 74 20 6c 61 62 | 65 6c 73 20 66 6f 72 20 |text lab|els for |
|00001b50| 74 68 65 20 62 6f 74 74 | 6f 6d 2c 0a 6c 65 66 74 |the bott|om,.left|
|00001b60| 20 68 61 6e 64 20 73 69 | 64 65 20 61 6e 64 20 74 | hand si|de and t|
|00001b70| 6f 70 20 6f 66 20 74 68 | 65 20 76 69 65 77 70 6f |op of th|e viewpo|
|00001b80| 72 74 2e 20 54 68 65 73 | 65 20 6c 61 62 65 6c 73 |rt. Thes|e labels|
|00001b90| 20 61 72 65 20 6e 6f 74 | 20 63 6c 69 70 70 65 64 | are not| clipped|
|00001ba0| 2c 0a 65 76 65 6e 20 74 | 68 6f 75 67 68 20 74 68 |,.even t|hough th|
|00001bb0| 65 79 20 6c 69 65 20 6f | 75 74 73 69 64 65 20 74 |ey lie o|utside t|
|00001bc0| 68 65 20 76 69 65 77 70 | 6f 72 74 20 28 62 75 74 |he viewp|ort (but|
|00001bd0| 20 74 68 65 79 20 61 72 | 65 20 63 6c 69 70 70 65 | they ar|e clippe|
|00001be0| 64 20 61 74 20 74 68 65 | 0a 73 75 62 70 61 67 65 |d at the|.subpage|
|00001bf0| 20 62 6f 75 6e 64 61 72 | 69 65 73 29 2e 20 7b 5c | boundar|ies). {\|
|00001c00| 74 74 20 70 6c 6c 61 62 | 7d 20 61 63 74 75 61 6c |tt pllab|} actual|
|00001c10| 6c 79 20 63 61 6c 6c 73 | 20 74 68 65 20 6d 6f 72 |ly calls| the mor|
|00001c20| 65 20 67 65 6e 65 72 61 | 6c 20 72 6f 75 74 69 6e |e genera|l routin|
|00001c30| 65 0a 7b 5c 74 74 20 70 | 6c 6d 74 65 78 7d 20 77 |e.{\tt p|lmtex} w|
|00001c40| 68 69 63 68 20 63 61 6e | 20 62 65 20 75 73 65 64 |hich can| be used|
|00001c50| 20 66 6f 72 20 70 6c 6f | 74 74 69 6e 67 20 6c 61 | for plo|tting la|
|00001c60| 62 65 6c 73 20 61 74 20 | 61 6e 79 20 70 6f 69 6e |bels at |any poin|
|00001c70| 74 20 72 65 6c 61 74 69 | 76 65 0a 74 6f 20 74 68 |t relati|ve.to th|
|00001c80| 65 20 76 69 65 77 70 6f | 72 74 2e 20 46 6f 72 20 |e viewpo|rt. For |
|00001c90| 6f 75 72 20 65 78 61 6d | 70 6c 65 2c 20 77 65 20 |our exam|ple, we |
|00001ca0| 6d 61 79 20 75 73 65 0a | 5c 62 65 67 69 6e 7b 76 |may use.|\begin{v|
|00001cb0| 65 72 62 61 74 69 6d 7d | 0a 70 6c 6c 61 62 28 22 |erbatim}|.pllab("|
|00001cc0| 56 5c 5c 64 43 45 5c 5c | 75 20 28 56 6f 6c 74 73 |V\\dCE\\|u (Volts|
|00001cd0| 29 22 2c 22 49 5c 5c 64 | 43 5c 5c 75 20 28 6d 41 |)","I\\d|C\\u (mA|
|00001ce0| 29 22 2c 22 54 52 41 4e | 53 49 53 54 4f 52 20 43 |)","TRAN|SISTOR C|
|00001cf0| 48 41 52 41 43 54 45 52 | 49 53 54 49 43 53 22 29 |HARACTER|ISTICS")|
|00001d00| 3b 0a 5c 65 6e 64 7b 76 | 65 72 62 61 74 69 6d 7d |;.\end{v|erbatim}|
|00001d10| 0a 4e 6f 74 65 20 74 68 | 61 74 20 5c 76 65 72 62 |.Note th|at \verb|
|00001d20| 2b 5c 5c 64 2b 20 61 6e | 64 20 5c 76 65 72 62 2b |+\\d+ an|d \verb+|
|00001d30| 5c 5c 75 2b 20 61 72 65 | 20 65 73 63 61 70 65 20 |\\u+ are| escape |
|00001d40| 73 65 71 75 65 6e 63 65 | 73 20 28 73 65 65 20 70 |sequence|s (see p|
|00001d50| 61 67 65 20 0a 5c 70 61 | 67 65 72 65 66 7b 65 73 |age .\pa|geref{es|
|00001d60| 63 61 70 65 7d 29 20 77 | 68 69 63 68 20 61 6c 6c |cape}) w|hich all|
|00001d70| 6f 77 0a 73 75 62 73 63 | 72 69 70 74 73 20 61 6e |ow.subsc|ripts an|
|00001d80| 64 20 73 75 70 65 72 73 | 63 72 69 70 74 73 20 74 |d supers|cripts t|
|00001d90| 6f 20 62 65 20 75 73 65 | 64 20 69 6e 20 74 65 78 |o be use|d in tex|
|00001da0| 74 2e 20 54 68 65 79 20 | 61 72 65 20 64 65 73 63 |t. They |are desc|
|00001db0| 72 69 62 65 64 20 6d 6f | 72 65 0a 66 75 6c 6c 79 |ribed mo|re.fully|
|00001dc0| 20 6c 61 74 65 72 20 69 | 6e 20 74 68 69 73 20 63 | later i|n this c|
|00001dd0| 68 61 70 74 65 72 2e 0a | 0a 54 68 65 20 68 65 69 |hapter..|.The hei|
|00001de0| 67 68 74 73 20 6f 66 20 | 63 68 61 72 61 63 74 65 |ghts of |characte|
|00001df0| 72 73 20 75 73 65 64 20 | 66 6f 72 20 74 68 65 20 |rs used |for the |
|00001e00| 61 78 69 73 20 61 6e 64 | 20 67 72 61 70 68 20 6c |axis and| graph l|
|00001e10| 61 62 65 6c 73 20 63 61 | 6e 20 62 65 0a 63 68 61 |abels ca|n be.cha|
|00001e20| 6e 67 65 64 20 62 79 20 | 6d 65 61 6e 73 20 6f 66 |nged by |means of|
|00001e30| 20 74 68 65 20 72 6f 75 | 74 69 6e 65 20 5c 72 6f | the rou|tine \ro|
|00001e40| 75 7b 70 6c 73 63 68 72 | 7d 2e 0a 0a 5c 73 65 63 |u{plschr|}...\sec|
|00001e50| 74 69 6f 6e 20 7b 54 68 | 65 20 72 6f 75 74 69 6e |tion {Th|e routin|
|00001e60| 65 20 7b 5c 74 74 20 70 | 6c 65 6e 76 7d 7d 5c 6c |e {\tt p|lenv}}\l|
|00001e70| 61 62 65 6c 7b 70 6c 65 | 6e 76 2d 73 65 63 7d 0a |abel{ple|nv-sec}.|
|00001e80| 0a 48 61 76 69 6e 67 20 | 74 6f 20 63 61 6c 6c 20 |.Having |to call |
|00001e90| 7b 5c 74 74 20 70 6c 61 | 64 76 7d 2c 20 7b 5c 74 |{\tt pla|dv}, {\t|
|00001ea0| 74 20 70 6c 76 70 6f 72 | 7d 2c 20 7b 5c 74 74 20 |t plvpor|}, {\tt |
|00001eb0| 70 6c 77 69 6e 64 7d 20 | 61 6e 64 20 7b 5c 74 74 |plwind} |and {\tt|
|00001ec0| 20 70 6c 62 6f 78 7d 0a | 69 73 20 65 78 63 65 73 | plbox}.|is exces|
|00001ed0| 73 69 76 65 6c 79 20 63 | 75 6d 62 65 72 73 6f 6d |sively c|umbersom|
|00001ee0| 65 20 66 6f 72 20 64 72 | 61 77 69 6e 67 20 73 69 |e for dr|awing si|
|00001ef0| 6d 70 6c 65 20 67 72 61 | 70 68 73 2e 20 53 75 62 |mple gra|phs. Sub|
|00001f00| 72 6f 75 74 69 6e 65 20 | 7b 5c 74 74 20 70 6c 65 |routine |{\tt ple|
|00001f10| 6e 76 7d 0a 63 6f 6d 62 | 69 6e 65 73 20 61 6c 6c |nv}.comb|ines all|
|00001f20| 20 66 6f 75 72 20 6f 66 | 20 74 68 65 73 65 20 69 | four of| these i|
|00001f30| 6e 20 6f 6e 65 20 73 75 | 62 72 6f 75 74 69 6e 65 |n one su|broutine|
|00001f40| 2c 20 75 73 69 6e 67 20 | 74 68 65 0a 73 74 61 6e |, using |the.stan|
|00001f50| 64 61 72 64 20 76 69 65 | 77 70 6f 72 74 2c 20 61 |dard vie|wport, a|
|00001f60| 6e 64 20 61 20 6c 69 6d | 69 74 65 64 20 73 75 62 |nd a lim|ited sub|
|00001f70| 73 65 74 20 6f 66 20 74 | 68 65 20 63 61 70 61 62 |set of t|he capab|
|00001f80| 69 6c 69 74 69 65 73 20 | 6f 66 20 7b 5c 74 74 20 |ilities |of {\tt |
|00001f90| 70 6c 62 6f 78 7d 2e 0a | 46 6f 72 20 65 78 61 6d |plbox}..|For exam|
|00001fa0| 70 6c 65 2c 20 74 68 65 | 20 67 72 61 70 68 20 64 |ple, the| graph d|
|00001fb0| 65 73 63 72 69 62 65 64 | 20 61 62 6f 76 65 20 63 |escribed| above c|
|00001fc0| 6f 75 6c 64 20 62 65 20 | 69 6e 69 74 69 61 74 65 |ould be |initiate|
|00001fd0| 64 20 62 79 20 74 68 65 | 20 63 61 6c 6c 3a 0a 5c |d by the| call:.\|
|00001fe0| 62 65 67 69 6e 7b 76 65 | 72 62 61 74 69 6d 7d 0a |begin{ve|rbatim}.|
|00001ff0| 70 6c 65 6e 76 28 30 2e | 30 2c 31 32 2e 30 2c 30 |plenv(0.|0,12.0,0|
|00002000| 2e 30 2c 31 30 2e 30 2c | 30 2c 30 29 3b 0a 5c 65 |.0,10.0,|0,0);.\e|
|00002010| 6e 64 7b 76 65 72 62 61 | 74 69 6d 7d 0a 77 68 69 |nd{verba|tim}.whi|
|00002020| 63 68 20 69 73 20 65 71 | 75 69 76 61 6c 65 6e 74 |ch is eq|uivalent|
|00002030| 20 74 6f 20 74 68 65 20 | 66 6f 6c 6c 6f 77 69 6e | to the |followin|
|00002040| 67 20 73 65 72 69 65 73 | 20 6f 66 20 63 61 6c 6c |g series| of call|
|00002050| 73 3a 0a 5c 62 65 67 69 | 6e 7b 76 65 72 62 61 74 |s:.\begi|n{verbat|
|00002060| 69 6d 7d 0a 70 6c 61 64 | 76 28 30 29 3b 0a 70 6c |im}.plad|v(0);.pl|
|00002070| 76 73 74 61 28 29 3b 0a | 70 6c 77 69 6e 64 28 30 |vsta();.|plwind(0|
|00002080| 2e 30 2c 31 32 2e 30 2c | 30 2e 30 2c 31 30 2e 30 |.0,12.0,|0.0,10.0|
|00002090| 29 3b 0a 70 6c 62 6f 78 | 28 22 42 43 4e 53 54 22 |);.plbox|("BCNST"|
|000020a0| 2c 30 2e 30 2c 30 2c 22 | 42 43 4e 53 54 56 22 2c |,0.0,0,"|BCNSTV",|
|000020b0| 30 2e 30 2c 30 29 3b 0a | 5c 65 6e 64 7b 76 65 72 |0.0,0);.|\end{ver|
|000020c0| 62 61 74 69 6d 7d 0a 0a | 5c 73 65 63 74 69 6f 6e |batim}..|\section|
|000020d0| 20 7b 53 65 74 74 69 6e | 67 20 4c 69 6e 65 20 41 | {Settin|g Line A|
|000020e0| 74 74 72 69 62 75 74 65 | 73 7d 0a 0a 54 68 65 20 |ttribute|s}..The |
|000020f0| 67 72 61 70 68 20 64 72 | 61 77 69 6e 67 20 72 6f |graph dr|awing ro|
|00002100| 75 74 69 6e 65 73 20 6d | 61 79 20 62 65 20 66 72 |utines m|ay be fr|
|00002110| 65 65 6c 79 20 6d 69 78 | 65 64 20 77 69 74 68 20 |eely mix|ed with |
|00002120| 74 68 6f 73 65 20 64 65 | 73 63 72 69 62 65 64 20 |those de|scribed |
|00002130| 69 6e 0a 74 68 69 73 20 | 73 65 63 74 69 6f 6e 20 |in.this |section |
|00002140| 77 68 69 63 68 20 61 6c | 6c 6f 77 20 74 68 65 20 |which al|low the |
|00002150| 75 73 65 72 20 74 6f 20 | 63 6f 6e 74 72 6f 6c 20 |user to |control |
|00002160| 6c 69 6e 65 20 63 6f 6c | 6f 75 72 20 61 6e 64 20 |line col|our and |
|00002170| 73 74 79 6c 65 73 2e 20 | 54 68 65 0a 61 74 74 72 |styles. |The.attr|
|00002180| 69 62 75 74 65 73 20 73 | 65 74 20 75 70 20 62 79 |ibutes s|et up by|
|00002190| 20 74 68 65 73 65 20 72 | 6f 75 74 69 6e 65 73 20 | these r|outines |
|000021a0| 61 70 70 6c 79 20 6d 6f | 64 61 6c 6c 79 2c 20 69 |apply mo|dally, i|
|000021b0| 2e 65 2c 20 61 6c 6c 20 | 73 75 62 73 65 71 75 65 |.e, all |subseque|
|000021c0| 6e 74 0a 6f 62 6a 65 63 | 74 73 20 28 6c 69 6e 65 |nt.objec|ts (line|
|000021d0| 73 2c 20 63 68 61 72 61 | 63 74 65 72 73 20 61 6e |s, chara|cters an|
|000021e0| 64 20 73 79 6d 62 6f 6c | 73 29 20 70 6c 6f 74 74 |d symbol|s) plott|
|000021f0| 65 64 20 75 6e 74 69 6c | 20 74 68 65 20 6e 65 78 |ed until| the nex|
|00002200| 74 20 63 68 61 6e 67 65 | 20 69 6e 0a 61 74 74 72 |t change| in.attr|
|00002210| 69 62 75 74 65 73 20 61 | 72 65 20 61 66 66 65 63 |ibutes a|re affec|
|00002220| 74 65 64 20 69 6e 20 74 | 68 65 20 73 61 6d 65 20 |ted in t|he same |
|00002230| 77 61 79 2e 20 54 68 65 | 20 6f 6e 6c 79 20 65 78 |way. The| only ex|
|00002240| 63 65 70 74 69 6f 6e 20 | 74 6f 20 74 68 69 73 20 |ception |to this |
|00002250| 72 75 6c 65 0a 69 73 20 | 74 68 61 74 20 63 68 61 |rule.is |that cha|
|00002260| 72 61 63 74 65 72 73 20 | 61 6e 64 20 73 79 6d 62 |racters |and symb|
|00002270| 6f 6c 73 20 61 72 65 20 | 6e 6f 74 20 61 66 66 65 |ols are |not affe|
|00002280| 63 74 65 64 20 62 79 20 | 61 20 63 68 61 6e 67 65 |cted by |a change|
|00002290| 20 69 6e 20 74 68 65 20 | 6c 69 6e 65 0a 73 74 79 | in the |line.sty|
|000022a0| 6c 65 2c 20 62 75 74 20 | 61 72 65 20 61 6c 77 61 |le, but |are alwa|
|000022b0| 79 73 20 64 72 61 77 6e | 20 75 73 69 6e 67 20 61 |ys drawn| using a|
|000022c0| 20 63 6f 6e 74 69 6e 75 | 6f 75 73 20 6c 69 6e 65 | continu|ous line|
|000022d0| 2e 0a 0a 4c 69 6e 65 20 | 63 6f 6c 6f 75 72 20 5c |...Line |colour \|
|000022e0| 6c 61 62 65 6c 7b 63 6f | 6c 6f 75 72 7d 20 69 73 |label{co|lour} is|
|000022f0| 20 73 65 74 20 75 73 69 | 6e 67 20 74 68 65 20 72 | set usi|ng the r|
|00002300| 6f 75 74 69 6e 65 20 5c | 72 6f 75 7b 70 6c 63 6f |outine \|rou{plco|
|00002310| 6c 7d 2e 20 54 68 65 0a | 61 72 67 75 6d 65 6e 74 |l}. The.|argument|
|00002320| 20 69 73 20 69 67 6e 6f | 72 65 64 20 66 6f 72 20 | is igno|red for |
|00002330| 64 65 76 69 63 65 73 20 | 77 68 69 63 68 20 63 61 |devices |which ca|
|00002340| 6e 20 6f 6e 6c 79 20 70 | 6c 6f 74 20 69 6e 20 6f |n only p|lot in o|
|00002350| 6e 65 20 63 6f 6c 6f 75 | 72 20 62 75 74 20 73 6f |ne colou|r but so|
|00002360| 6d 65 0a 74 65 72 6d 69 | 6e 61 6c 73 20 73 75 70 |me.termi|nals sup|
|00002370| 70 6f 72 74 20 6c 69 6e | 65 20 65 72 61 73 75 72 |port lin|e erasur|
|00002380| 65 20 62 79 20 70 6c 6f | 74 74 69 6e 67 20 69 6e |e by plo|tting in|
|00002390| 20 63 6f 6c 6f 75 72 20 | 7a 65 72 6f 2e 20 46 6f | colour |zero. Fo|
|000023a0| 72 20 48 50 0a 70 6c 6f | 74 74 65 72 73 2c 20 74 |r HP.plo|tters, t|
|000023b0| 68 65 73 65 20 63 6f 6c | 6f 75 72 73 20 6d 61 70 |hese col|ours map|
|000023c0| 20 74 6f 20 74 68 65 20 | 76 61 72 69 6f 75 73 20 | to the |various |
|000023d0| 70 65 6e 73 2e 0a 0a 4c | 69 6e 65 20 73 74 79 6c |pens...L|ine styl|
|000023e0| 65 20 5c 6c 61 62 65 6c | 7b 73 74 79 6c 65 7d 20 |e \label|{style} |
|000023f0| 69 73 20 73 65 74 20 75 | 73 69 6e 67 20 74 68 65 |is set u|sing the|
|00002400| 20 72 6f 75 74 69 6e 65 | 20 5c 72 6f 75 7b 70 6c | routine| \rou{pl|
|00002410| 73 74 79 6c 7d 2e 20 41 | 20 62 72 6f 6b 65 6e 0a |styl}. A| broken.|
|00002420| 6c 69 6e 65 20 69 73 20 | 73 70 65 63 69 66 69 65 |line is |specifie|
|00002430| 64 20 69 6e 20 74 65 72 | 6d 73 20 6f 66 20 61 20 |d in ter|ms of a |
|00002440| 72 65 70 65 61 74 65 64 | 20 70 61 74 74 65 72 6e |repeated| pattern|
|00002450| 20 63 6f 6e 73 69 73 74 | 69 6e 67 20 6f 66 20 6d | consist|ing of m|
|00002460| 61 72 6b 73 0a 28 70 65 | 6e 20 64 6f 77 6e 29 20 |arks.(pe|n down) |
|00002470| 61 6e 64 20 73 70 61 63 | 65 73 20 28 70 65 6e 20 |and spac|es (pen |
|00002480| 75 70 29 2e 20 54 68 65 | 20 61 72 67 75 6d 65 6e |up). The| argumen|
|00002490| 74 73 20 74 6f 20 74 68 | 69 73 20 72 6f 75 74 69 |ts to th|is routi|
|000024a0| 6e 65 20 63 6f 6e 73 69 | 73 74 20 6f 66 0a 74 68 |ne consi|st of.th|
|000024b0| 65 20 6e 75 6d 62 65 72 | 20 6f 66 20 65 6c 65 6d |e number| of elem|
|000024c0| 65 6e 74 73 20 69 6e 20 | 74 68 65 20 6c 69 6e 65 |ents in |the line|
|000024d0| 2c 20 66 6f 6c 6c 6f 77 | 65 64 20 62 79 20 74 77 |, follow|ed by tw|
|000024e0| 6f 20 70 6f 69 6e 74 65 | 72 73 20 74 6f 0a 69 6e |o pointe|rs to.in|
|000024f0| 74 65 67 65 72 20 61 72 | 72 61 79 73 20 73 70 65 |teger ar|rays spe|
|00002500| 63 69 66 79 69 6e 67 0a | 74 68 65 20 6d 61 72 6b |cifying.|the mark|
|00002510| 20 61 6e 64 20 73 70 61 | 63 65 20 6c 65 6e 67 74 | and spa|ce lengt|
|00002520| 68 73 20 69 6e 20 6d 69 | 63 72 6f 6d 65 74 72 65 |hs in mi|crometre|
|00002530| 73 2e 20 54 68 75 73 20 | 61 20 6c 69 6e 65 20 63 |s. Thus |a line c|
|00002540| 6f 6e 73 69 73 74 69 6e | 67 20 6f 66 0a 6c 6f 6e |onsistin|g of.lon|
|00002550| 67 20 61 6e 64 20 73 68 | 6f 72 74 20 64 61 73 68 |g and sh|ort dash|
|00002560| 65 73 20 6f 66 20 6c 65 | 6e 67 74 68 73 20 34 5c |es of le|ngths 4\|
|00002570| 2c 6d 6d 20 61 6e 64 20 | 32 5c 2c 6d 6d 2c 20 73 |,mm and |2\,mm, s|
|00002580| 65 70 61 72 61 74 65 64 | 20 62 79 20 73 70 61 63 |eparated| by spac|
|00002590| 65 73 20 6f 66 0a 6c 65 | 6e 67 74 68 20 31 2e 35 |es of.le|ngth 1.5|
|000025a0| 5c 2c 6d 6d 20 69 73 20 | 73 70 65 63 69 66 69 65 |\,mm is |specifie|
|000025b0| 64 20 62 79 3a 0a 5c 62 | 65 67 69 6e 7b 76 65 72 |d by:.\b|egin{ver|
|000025c0| 62 61 74 69 6d 7d 0a 4d | 41 52 4b 5b 30 5d 3d 34 |batim}.M|ARK[0]=4|
|000025d0| 30 30 30 3b 0a 4d 41 52 | 4b 5b 31 5d 3d 32 30 30 |000;.MAR|K[1]=200|
|000025e0| 30 3b 0a 53 50 41 43 45 | 5b 30 5d 3d 31 35 30 30 |0;.SPACE|[0]=1500|
|000025f0| 3b 0a 53 50 41 43 45 5b | 31 5d 3d 31 35 30 30 3b |;.SPACE[|1]=1500;|
|00002600| 0a 70 6c 73 74 79 6c 28 | 32 2c 4d 41 52 4b 2c 53 |.plstyl(|2,MARK,S|
|00002610| 50 41 43 45 29 3b 0a 5c | 65 6e 64 7b 76 65 72 62 |PACE);.\|end{verb|
|00002620| 61 74 69 6d 7d 0a 54 6f | 20 72 65 74 75 72 6e 20 |atim}.To| return |
|00002630| 74 6f 20 61 20 63 6f 6e | 74 69 6e 75 6f 75 73 20 |to a con|tinuous |
|00002640| 6c 69 6e 65 2c 20 6a 75 | 73 74 20 63 61 6c 6c 20 |line, ju|st call |
|00002650| 7b 5c 74 74 20 70 6c 73 | 74 79 6c 7d 20 77 69 74 |{\tt pls|tyl} wit|
|00002660| 68 20 66 69 72 73 74 20 | 61 72 67 75 6d 65 6e 74 |h first |argument|
|00002670| 20 0a 73 65 74 20 74 6f | 20 7a 65 72 6f 2e 0a 0a | .set to| zero...|
|00002680| 5c 73 65 63 74 69 6f 6e | 20 7b 53 65 74 74 69 6e |\section| {Settin|
|00002690| 67 20 43 68 61 72 61 63 | 74 65 72 20 61 6e 64 20 |g Charac|ter and |
|000026a0| 53 79 6d 62 6f 6c 20 41 | 74 74 72 69 62 75 74 65 |Symbol A|ttribute|
|000026b0| 73 7d 0a 0a 54 68 65 20 | 72 6f 75 74 69 6e 65 20 |s}..The |routine |
|000026c0| 5c 72 6f 75 7b 70 6c 66 | 6f 6e 74 7d 20 73 65 74 |\rou{plf|ont} set|
|000026d0| 73 20 75 70 20 74 68 65 | 20 64 65 66 61 75 6c 74 |s up the| default|
|000026e0| 20 66 6f 6e 74 20 66 6f | 72 20 61 6c 6c 20 63 68 | font fo|r all ch|
|000026f0| 61 72 61 63 74 65 72 0a | 73 74 72 69 6e 67 73 2e |aracter.|strings.|
|00002700| 20 49 74 20 6d 61 79 20 | 62 65 20 6f 76 65 72 2d | It may |be over-|
|00002710| 72 69 64 64 65 6e 20 66 | 6f 72 20 28 61 20 70 6f |ridden f|or (a po|
|00002720| 72 74 69 6f 6e 29 20 6f | 66 20 61 20 73 74 72 69 |rtion) o|f a stri|
|00002730| 6e 67 20 62 79 20 75 73 | 69 6e 67 20 61 6e 0a 65 |ng by us|ing an.e|
|00002740| 73 63 61 70 65 20 73 65 | 71 75 65 6e 63 65 20 77 |scape se|quence w|
|00002750| 69 74 68 69 6e 20 74 68 | 65 20 74 65 78 74 2c 20 |ithin th|e text, |
|00002760| 61 73 20 64 65 73 63 72 | 69 62 65 64 20 62 65 6c |as descr|ibed bel|
|00002770| 6f 77 2e 20 46 6f 75 72 | 0a 66 6f 6e 74 73 20 61 |ow. Four|.fonts a|
|00002780| 72 65 20 61 76 61 69 6c | 61 62 6c 65 2c 20 74 68 |re avail|able, th|
|00002790| 65 20 64 65 66 61 75 6c | 74 20 66 6f 6e 74 20 28 |e defaul|t font (|
|000027a0| 31 29 20 69 73 20 73 69 | 6d 70 6c 65 20 61 6e 64 |1) is si|mple and|
|000027b0| 20 66 61 73 74 65 73 74 | 20 74 6f 20 64 72 61 77 | fastest| to draw|
|000027c0| 2c 0a 77 68 69 6c 65 20 | 74 68 65 20 6f 74 68 65 |,.while |the othe|
|000027d0| 72 73 20 61 72 65 20 75 | 73 65 66 75 6c 20 66 6f |rs are u|seful fo|
|000027e0| 72 20 70 72 65 73 65 6e | 74 61 74 69 6f 6e 20 70 |r presen|tation p|
|000027f0| 6c 6f 74 73 20 6f 6e 20 | 61 20 68 69 67 68 2d 72 |lots on |a high-r|
|00002800| 65 73 6f 6c 75 74 69 6f | 6e 0a 64 65 76 69 63 65 |esolutio|n.device|
|00002810| 2e 0a 0a 54 68 65 20 66 | 6f 6e 74 20 63 6f 64 65 |...The f|ont code|
|00002820| 73 20 61 72 65 20 69 6e | 74 65 72 70 72 65 74 65 |s are in|terprete|
|00002830| 64 20 61 73 20 66 6f 6c | 6c 6f 77 73 3a 0a 5c 62 |d as fol|lows:.\b|
|00002840| 65 67 69 6e 7b 69 74 65 | 6d 69 7a 65 7d 0a 20 20 |egin{ite|mize}. |
|00002850| 20 5c 69 74 65 6d 7b 5c | 74 74 20 66 6f 6e 74 20 | \item{\|tt font |
|00002860| 3d 20 31 7d 3a 20 6e 6f | 72 6d 61 6c 20 73 69 6d |= 1}: no|rmal sim|
|00002870| 70 6c 65 20 66 6f 6e 74 | 0a 20 20 20 5c 69 74 65 |ple font|. \ite|
|00002880| 6d 7b 5c 74 74 20 66 6f | 6e 74 20 3d 20 32 7d 3a |m{\tt fo|nt = 2}:|
|00002890| 20 72 6f 6d 61 6e 20 66 | 6f 6e 74 0a 20 20 20 5c | roman f|ont. \|
|000028a0| 69 74 65 6d 7b 5c 74 74 | 20 66 6f 6e 74 20 3d 20 |item{\tt| font = |
|000028b0| 33 7d 3a 20 69 74 61 6c | 69 63 20 66 6f 6e 74 0a |3}: ital|ic font.|
|000028c0| 20 20 20 5c 69 74 65 6d | 7b 5c 74 74 20 66 6f 6e | \item|{\tt fon|
|000028d0| 74 20 3d 20 34 7d 3a 20 | 73 63 72 69 70 74 20 66 |t = 4}: |script f|
|000028e0| 6f 6e 74 0a 5c 65 6e 64 | 7b 69 74 65 6d 69 7a 65 |ont.\end|{itemize|
|000028f0| 7d 0a 0a 54 68 65 20 72 | 6f 75 74 69 6e 65 20 5c |}..The r|outine \|
|00002900| 72 6f 75 7b 70 6c 73 63 | 68 72 7d 20 69 73 20 75 |rou{plsc|hr} is u|
|00002910| 73 65 64 20 74 6f 20 73 | 65 74 20 75 70 20 74 68 |sed to s|et up th|
|00002920| 65 20 73 69 7a 65 20 6f | 66 20 73 75 62 73 71 75 |e size o|f subsqu|
|00002930| 65 6e 74 0a 63 68 61 72 | 61 63 74 65 72 73 20 64 |ent.char|acters d|
|00002940| 72 61 77 6e 2e 20 54 68 | 65 20 61 63 74 75 61 6c |rawn. Th|e actual|
|00002950| 20 68 65 69 67 68 74 20 | 6f 66 20 61 20 63 68 61 | height |of a cha|
|00002960| 72 61 63 74 65 72 20 69 | 73 20 74 68 65 20 70 72 |racter i|s the pr|
|00002970| 6f 64 75 63 74 20 6f 66 | 20 74 68 65 0a 64 65 66 |oduct of| the.def|
|00002980| 61 75 6c 74 20 63 68 61 | 72 61 63 74 65 72 20 73 |ault cha|racter s|
|00002990| 69 7a 65 20 61 6e 64 20 | 61 20 73 63 61 6c 69 6e |ize and |a scalin|
|000029a0| 67 20 66 61 63 74 6f 72 | 2e 20 49 66 20 6e 6f 20 |g factor|. If no |
|000029b0| 63 61 6c 6c 20 69 73 20 | 6d 61 64 65 20 74 6f 0a |call is |made to.|
|000029c0| 7b 5c 74 74 20 70 6c 73 | 63 68 72 7d 2c 20 74 68 |{\tt pls|chr}, th|
|000029d0| 65 20 64 65 66 61 75 6c | 74 20 63 68 61 72 61 63 |e defaul|t charac|
|000029e0| 74 65 72 20 73 69 7a 65 | 20 69 73 20 73 65 74 20 |ter size| is set |
|000029f0| 75 70 20 64 65 70 65 6e | 64 69 6e 67 20 6f 6e 20 |up depen|ding on |
|00002a00| 74 68 65 20 6e 75 6d 62 | 65 72 20 0a 6f 66 20 73 |the numb|er .of s|
|00002a10| 75 62 70 61 67 65 73 20 | 64 65 66 69 6e 65 64 20 |ubpages |defined |
|00002a20| 69 6e 20 74 68 65 20 63 | 61 6c 6c 20 74 6f 20 7b |in the c|all to {|
|00002a30| 5c 74 74 20 70 6c 73 74 | 61 72 7d 20 6f 72 20 7b |\tt plst|ar} or {|
|00002a40| 5c 74 74 20 70 6c 62 65 | 67 7d 2c 20 61 6e 64 20 |\tt plbe|g}, and |
|00002a50| 74 68 65 0a 73 63 61 6c | 65 20 69 73 20 73 65 74 |the.scal|e is set|
|00002a60| 20 74 6f 20 0a 31 2e 30 | 2e 20 55 6e 64 65 72 20 | to .1.0|. Under |
|00002a70| 6e 6f 72 6d 61 6c 20 63 | 69 72 63 75 6d 73 74 61 |normal c|ircumsta|
|00002a80| 6e 63 65 73 2c 20 69 74 | 20 69 73 20 72 65 63 6f |nces, it| is reco|
|00002a90| 6d 6d 65 6e 64 65 64 20 | 74 68 61 74 20 74 68 65 |mmended |that the|
|00002aa0| 20 75 73 65 72 20 64 6f | 65 73 20 6e 6f 74 0a 61 | user do|es not.a|
|00002ab0| 6c 74 65 72 20 74 68 65 | 20 64 65 66 61 75 6c 74 |lter the| default|
|00002ac0| 20 68 65 69 67 68 74 2c | 20 62 75 74 20 73 69 6d | height,| but sim|
|00002ad0| 70 6c 79 20 75 73 65 73 | 20 74 68 65 20 73 63 61 |ply uses| the sca|
|00002ae0| 6c 65 20 70 61 72 61 6d | 65 74 65 72 2e 20 54 68 |le param|eter. Th|
|00002af0| 69 73 20 63 61 6e 0a 62 | 65 20 64 6f 6e 65 20 62 |is can.b|e done b|
|00002b00| 79 20 63 61 6c 6c 69 6e | 67 20 7b 5c 74 74 20 70 |y callin|g {\tt p|
|00002b10| 6c 73 63 68 72 7d 20 77 | 69 74 68 20 7b 5c 74 74 |lschr} w|ith {\tt|
|00002b20| 20 64 65 66 3d 30 2e 30 | 7d 20 61 6e 64 20 7b 5c | def=0.0|} and {\|
|00002b30| 74 74 20 73 63 61 6c 65 | 7d 20 73 65 74 20 74 6f |tt scale|} set to|
|00002b40| 20 74 68 65 0a 64 65 73 | 69 72 65 64 20 6d 75 6c | the.des|ired mul|
|00002b50| 74 69 70 6c 65 20 6f 66 | 20 74 68 65 20 64 65 66 |tiple of| the def|
|00002b60| 61 75 6c 74 20 68 65 69 | 67 68 74 2e 20 49 66 20 |ault hei|ght. If |
|00002b70| 74 68 65 20 64 65 66 61 | 75 6c 74 20 68 65 69 67 |the defa|ult heig|
|00002b80| 68 74 20 69 73 20 74 6f | 20 62 65 0a 63 68 61 6e |ht is to| be.chan|
|00002b90| 67 65 64 2c 20 7b 5c 74 | 74 20 64 65 66 7d 20 69 |ged, {\t|t def} i|
|00002ba0| 73 20 73 65 74 20 74 6f | 20 74 68 65 20 6e 65 77 |s set to| the new|
|00002bb0| 20 64 65 66 61 75 6c 74 | 20 68 65 69 67 68 74 20 | default| height |
|00002bc0| 69 6e 20 6d 69 6c 6c 69 | 6d 65 74 72 65 73 2c 20 |in milli|metres, |
|00002bd0| 61 6e 64 0a 74 68 65 20 | 6e 65 77 20 63 68 61 72 |and.the |new char|
|00002be0| 61 63 74 65 72 20 68 65 | 69 67 68 74 20 69 73 20 |acter he|ight is |
|00002bf0| 61 67 61 69 6e 20 73 65 | 74 20 74 6f 20 7b 5c 74 |again se|t to {\t|
|00002c00| 74 20 64 65 66 7d 20 6d | 75 6c 74 69 70 6c 69 65 |t def} m|ultiplie|
|00002c10| 64 20 62 79 20 7b 5c 74 | 74 0a 73 63 61 6c 65 7d |d by {\t|t.scale}|
|00002c20| 2e 0a 0a 54 68 65 20 72 | 6f 75 74 69 6e 65 20 5c |...The r|outine \|
|00002c30| 72 6f 75 7b 70 6c 73 73 | 79 6d 7d 20 73 65 74 73 |rou{plss|ym} sets|
|00002c40| 20 75 70 20 74 68 65 20 | 73 69 7a 65 20 6f 66 20 | up the |size of |
|00002c50| 61 6c 6c 20 73 75 62 73 | 65 71 75 65 6e 74 20 73 |all subs|equent s|
|00002c60| 79 6d 62 6f 6c 73 0a 64 | 72 61 77 6e 20 62 79 20 |ymbols.d|rawn by |
|00002c70| 63 61 6c 6c 73 20 74 6f | 20 7b 5c 74 74 20 70 6c |calls to| {\tt pl|
|00002c80| 70 6f 69 6e 7d 20 61 6e | 64 20 7b 5c 74 74 20 70 |poin} an|d {\tt p|
|00002c90| 6c 73 79 6d 7d 2e 20 49 | 74 20 6f 70 65 72 61 74 |lsym}. I|t operat|
|00002ca0| 65 73 20 61 6e 61 6c 6f | 67 6f 75 73 6c 79 0a 74 |es analo|gously.t|
|00002cb0| 6f 20 7b 5c 74 74 20 70 | 6c 73 63 68 72 7d 20 61 |o {\tt p|lschr} a|
|00002cc0| 73 20 64 65 73 63 72 69 | 62 65 64 20 61 62 6f 76 |s descri|bed abov|
|00002cd0| 65 2e 0a 0a 54 68 65 20 | 6c 65 6e 67 74 68 73 20 |e...The |lengths |
|00002ce0| 6f 66 20 6d 61 6a 6f 72 | 20 61 6e 64 20 6d 69 6e |of major| and min|
|00002cf0| 6f 72 20 74 69 63 6b 73 | 20 6f 6e 20 74 68 65 20 |or ticks| on the |
|00002d00| 61 78 65 73 20 61 72 65 | 20 73 65 74 20 75 70 20 |axes are| set up |
|00002d10| 62 79 20 74 68 65 20 72 | 6f 75 74 69 6e 65 73 0a |by the r|outines.|
|00002d20| 5c 72 6f 75 7b 70 6c 73 | 6d 61 6a 7d 20 61 6e 64 |\rou{pls|maj} and|
|00002d30| 20 5c 72 6f 75 7b 70 6c | 73 6d 69 6e 7d 2e 0a 0a | \rou{pl|smin}...|
|00002d40| 5c 73 65 63 74 69 6f 6e | 20 7b 45 73 63 61 70 65 |\section| {Escape|
|00002d50| 20 73 65 71 75 65 6e 63 | 65 73 20 69 6e 20 74 65 | sequenc|es in te|
|00002d60| 78 74 7d 20 5c 6c 61 62 | 65 6c 7b 65 73 63 61 70 |xt} \lab|el{escap|
|00002d70| 65 7d 0a 0a 54 68 65 20 | 72 6f 75 74 69 6e 65 73 |e}..The |routines|
|00002d80| 20 77 68 69 63 68 20 64 | 72 61 77 20 74 65 78 74 | which d|raw text|
|00002d90| 20 61 6c 6c 20 61 6c 6c | 6f 77 20 79 6f 75 20 74 | all all|ow you t|
|00002da0| 6f 20 69 6e 63 6c 75 64 | 65 20 65 73 63 61 70 65 |o includ|e escape|
|00002db0| 0a 73 65 71 75 65 63 65 | 73 20 69 6e 20 74 68 65 |.sequece|s in the|
|00002dc0| 20 74 65 78 74 20 74 6f | 20 62 65 20 70 6c 6f 74 | text to| be plot|
|00002dd0| 74 65 64 2e 20 54 68 65 | 73 65 20 61 72 65 20 63 |ted. The|se are c|
|00002de0| 68 61 72 61 63 74 65 72 | 20 73 65 71 75 65 6e 63 |haracter| sequenc|
|00002df0| 65 73 0a 77 68 69 63 68 | 20 61 72 65 20 61 72 65 |es.which| are are|
|00002e00| 20 69 6e 74 65 72 70 72 | 65 74 65 64 20 61 73 20 | interpr|eted as |
|00002e10| 69 6e 73 74 72 75 63 74 | 69 6f 6e 73 20 74 6f 0a |instruct|ions to.|
|00002e20| 63 68 61 6e 67 65 20 66 | 6f 6e 74 2c 20 64 72 61 |change f|ont, dra|
|00002e30| 77 20 73 75 70 65 72 73 | 63 72 69 70 74 73 20 61 |w supers|cripts a|
|00002e40| 6e 64 20 73 75 62 73 63 | 72 69 70 74 73 2c 20 64 |nd subsc|ripts, d|
|00002e50| 72 61 77 20 6e 6f 6e 2d | 41 53 43 49 49 0a 28 65 |raw non-|ASCII.(e|
|00002e60| 2e 67 2e 2c 20 47 72 65 | 65 6b 20 6c 65 74 74 65 |.g., Gre|ek lette|
|00002e70| 72 73 29 20 65 74 63 2e | 20 41 6c 6c 20 65 73 63 |rs) etc.| All esc|
|00002e80| 61 70 65 20 73 65 71 75 | 65 6e 63 65 73 20 73 74 |ape sequ|ences st|
|00002e90| 61 72 74 20 77 69 74 68 | 20 61 20 64 6f 75 62 6c |art with| a doubl|
|00002ea0| 65 0a 62 61 63 6b 73 6c | 61 73 68 20 63 68 61 72 |e.backsl|ash char|
|00002eb0| 61 63 74 65 72 20 28 5c | 76 65 72 62 2b 5c 5c 2b |acter (\|verb+\\+|
|00002ec0| 29 2e 0a 0a 54 68 65 20 | 66 6f 6c 6c 6f 77 69 6e |)...The |followin|
|00002ed0| 67 20 65 73 63 61 70 65 | 20 73 65 71 75 65 6e 63 |g escape| sequenc|
|00002ee0| 65 73 20 61 72 65 20 64 | 65 66 69 6e 65 64 3a 0a |es are d|efined:.|
|00002ef0| 5c 62 65 67 69 6e 7b 69 | 74 65 6d 69 7a 65 7d 0a |\begin{i|temize}.|
|00002f00| 20 20 20 5c 69 74 65 6d | 20 5c 76 65 72 62 2b 5c | \item| \verb+\|
|00002f10| 5c 75 2b 3a 20 6d 6f 76 | 65 20 75 70 20 74 6f 20 |\u+: mov|e up to |
|00002f20| 74 68 65 20 73 75 70 65 | 72 73 63 72 69 70 74 20 |the supe|rscript |
|00002f30| 70 6f 73 69 74 69 6f 6e | 20 0a 20 20 20 20 28 65 |position| . (e|
|00002f40| 6e 64 65 64 20 77 69 74 | 68 20 5c 76 65 72 62 2b |nded wit|h \verb+|
|00002f50| 5c 64 2b 29 0a 20 20 20 | 5c 69 74 65 6d 20 5c 76 |\d+). |\item \v|
|00002f60| 65 72 62 2b 5c 5c 64 2b | 3a 20 6d 6f 76 65 20 64 |erb+\\d+|: move d|
|00002f70| 6f 77 6e 20 74 6f 20 73 | 75 62 73 63 72 69 70 74 |own to s|ubscript|
|00002f80| 20 70 6f 73 69 74 69 6f | 6e 20 0a 20 20 20 20 28 | positio|n . (|
|00002f90| 65 6e 64 65 64 20 77 69 | 74 68 20 5c 76 65 72 62 |ended wi|th \verb|
|00002fa0| 2b 5c 5c 75 2b 29 0a 20 | 20 20 5c 69 74 65 6d 20 |+\\u+). | \item |
|00002fb0| 5c 76 65 72 62 2b 5c 5c | 62 2b 3a 20 62 61 63 6b |\verb+\\|b+: back|
|00002fc0| 73 70 61 63 65 20 28 74 | 6f 20 61 6c 6c 6f 77 20 |space (t|o allow |
|00002fd0| 6f 76 65 72 70 72 69 6e | 74 69 6e 67 29 0a 20 20 |overprin|ting). |
|00002fe0| 20 5c 69 74 65 6d 20 5c | 76 65 72 62 2b 5c 5c 5c | \item \|verb+\\\|
|00002ff0| 5c 2b 3a 20 62 61 63 6b | 73 6c 61 73 68 0a 20 20 |\+: back|slash. |
|00003000| 20 5c 69 74 65 6d 20 5c | 76 65 72 62 2e 5c 5c 2b | \item \|verb.\\+|
|00003010| 2e 3a 20 74 6f 67 67 6c | 65 20 6f 76 65 72 6c 69 |.: toggl|e overli|
|00003020| 6e 65 20 6d 6f 64 65 0a | 20 20 20 5c 69 74 65 6d |ne mode.| \item|
|00003030| 20 5c 76 65 72 62 2e 5c | 5c 2d 2e 3a 20 74 6f 67 | \verb.\|\-.: tog|
|00003040| 67 6c 65 20 75 6e 64 65 | 72 6c 69 6e 65 20 6d 6f |gle unde|rline mo|
|00003050| 64 65 0a 20 20 20 5c 69 | 74 65 6d 20 5c 76 65 72 |de. \i|tem \ver|
|00003060| 62 2b 5c 5c 67 78 2b 3a | 20 47 72 65 65 6b 20 6c |b+\\gx+:| Greek l|
|00003070| 65 74 74 65 72 20 63 6f | 72 72 65 73 70 6f 6e 64 |etter co|rrespond|
|00003080| 69 6e 67 20 74 6f 20 52 | 6f 6d 61 6e 20 6c 65 74 |ing to R|oman let|
|00003090| 74 65 72 20 7b 5c 74 74 | 20 78 7d 20 0a 20 20 20 |ter {\tt| x} . |
|000030a0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000030b0| 20 20 28 73 65 65 20 62 | 65 6c 6f 77 29 0a 20 20 | (see b|elow). |
|000030c0| 20 5c 69 74 65 6d 20 5c | 76 65 72 62 2b 5c 5c 66 | \item \|verb+\\f|
|000030d0| 6e 2b 3a 20 73 77 69 74 | 63 68 20 74 6f 20 6e 6f |n+: swit|ch to no|
|000030e0| 72 6d 61 6c 20 66 6f 6e | 74 0a 20 20 20 5c 69 74 |rmal fon|t. \it|
|000030f0| 65 6d 20 5c 76 65 72 62 | 2b 5c 5c 66 72 2b 3a 20 |em \verb|+\\fr+: |
|00003100| 73 77 69 74 63 68 20 74 | 6f 20 52 6f 6d 61 6e 20 |switch t|o Roman |
|00003110| 66 6f 6e 74 0a 20 20 20 | 5c 69 74 65 6d 20 5c 76 |font. |\item \v|
|00003120| 65 72 62 2b 5c 5c 66 69 | 2b 3a 20 73 77 69 74 63 |erb+\\fi|+: switc|
|00003130| 68 20 74 6f 20 69 74 61 | 6c 69 63 20 66 6f 6e 74 |h to ita|lic font|
|00003140| 0a 20 20 20 5c 69 74 65 | 6d 20 5c 76 65 72 62 2b |. \ite|m \verb+|
|00003150| 5c 5c 66 73 2b 3a 20 73 | 77 69 74 63 68 20 74 6f |\\fs+: s|witch to|
|00003160| 20 73 63 72 69 70 74 20 | 66 6f 6e 74 0a 20 20 20 | script |font. |
|00003170| 5c 69 74 65 6d 20 5c 76 | 65 72 62 2b 5c 5c 28 6e |\item \v|erb+\\(n|
|00003180| 6e 6e 29 2b 3a 20 48 65 | 72 73 68 65 79 20 63 68 |nn)+: He|rshey ch|
|00003190| 61 72 61 63 74 65 72 20 | 6e 6e 6e 20 28 31 20 74 |aracter |nnn (1 t|
|000031a0| 6f 20 34 20 64 65 63 69 | 6d 61 6c 20 64 69 67 69 |o 4 deci|mal digi|
|000031b0| 74 73 29 0a 5c 65 6e 64 | 7b 69 74 65 6d 69 7a 65 |ts).\end|{itemize|
|000031c0| 7d 0a 0a 53 65 63 74 69 | 6f 6e 73 20 6f 66 20 74 |}..Secti|ons of t|
|000031d0| 65 78 74 20 63 61 6e 20 | 68 61 76 65 20 61 6e 20 |ext can |have an |
|000031e0| 75 6e 64 65 72 6c 69 6e | 65 20 6f 72 20 6f 76 65 |underlin|e or ove|
|000031f0| 72 6c 69 6e 65 20 61 70 | 70 65 6e 64 65 64 2e 20 |rline ap|pended. |
|00003200| 46 6f 72 20 65 78 61 6d | 70 6c 65 2c 0a 74 68 65 |For exam|ple,.the|
|00003210| 20 73 74 72 69 6e 67 0a | 5c 5b 0a 7b 5c 72 6d 5c | string.|\[.{\rm\|
|00003220| 6f 76 65 72 6c 69 6e 65 | 7b 53 7d 28 5c 75 6e 64 |overline|{S}(\und|
|00003230| 65 72 6c 69 6e 65 7b 66 | 72 65 71 7d 29 7d 0a 5c |erline{f|req})}.\|
|00003240| 5d 0a 69 73 20 6f 62 74 | 61 69 6e 65 64 20 62 79 |].is obt|ained by|
|00003250| 20 73 70 65 63 69 66 79 | 69 6e 67 20 5c 76 65 72 | specify|ing \ver|
|00003260| 62 2e 22 5c 5c 2b 53 5c | 5c 2b 28 5c 5c 2d 66 72 |b."\\+S\|\+(\\-fr|
|00003270| 65 71 5c 5c 2d 29 22 2e | 2e 0a 0a 47 72 65 65 6b |eq\\-)".|...Greek|
|00003280| 20 6c 65 74 74 65 72 73 | 20 61 72 65 20 6f 62 74 | letters| are obt|
|00003290| 61 69 6e 65 64 20 62 79 | 20 5c 76 65 72 62 2b 5c |ained by| \verb+\|
|000032a0| 5c 67 2b 20 66 6f 6c 6c | 6f 77 65 64 20 62 79 20 |\g+ foll|owed by |
|000032b0| 61 20 52 6f 6d 61 6e 20 | 6c 65 74 74 65 72 2e 20 |a Roman |letter. |
|000032c0| 0a 54 61 62 6c 65 7e 5c | 72 65 66 7b 67 72 65 65 |.Table~\|ref{gree|
|000032d0| 6b 7d 20 73 68 6f 77 73 | 20 68 6f 77 20 74 68 65 |k} shows| how the|
|000032e0| 73 65 20 6c 65 74 74 65 | 72 73 20 6d 61 70 20 69 |se lette|rs map i|
|000032f0| 6e 74 6f 20 47 72 65 65 | 6b 20 63 68 61 72 61 63 |nto Gree|k charac|
|00003300| 74 65 72 73 2e 0a 5c 62 | 65 67 69 6e 7b 74 61 62 |ters..\b|egin{tab|
|00003310| 6c 65 7d 0a 20 20 20 5c | 63 65 6e 74 65 72 69 6e |le}. \|centerin|
|00003320| 67 0a 20 20 20 5c 62 65 | 67 69 6e 7b 74 61 62 75 |g. \be|gin{tabu|
|00003330| 6c 61 72 7d 7b 7c 6c 7c | 2a 7b 31 32 7d 7b 63 7c |lar}{|l||*{12}{c||
|00003340| 7d 7d 0a 20 20 20 5c 68 | 6c 69 6e 65 0a 20 20 20 |}}. \h|line. |
|00003350| 52 6f 6d 61 6e 26 41 26 | 42 26 47 26 44 26 45 26 |Roman&A&|B&G&D&E&|
|00003360| 5a 26 59 26 48 26 49 26 | 4b 26 4c 26 4d 5c 5c 0a |Z&Y&H&I&|K&L&M\\.|
|00003370| 20 20 20 5c 68 6c 69 6e | 65 0a 20 20 20 47 72 65 | \hlin|e. Gre|
|00003380| 65 6b 26 41 20 26 20 42 | 20 26 20 24 5c 47 61 6d |ek&A & B| & $\Gam|
|00003390| 6d 61 24 20 26 20 24 5c | 44 65 6c 74 61 24 20 26 |ma$ & $\|Delta$ &|
|000033a0| 20 45 20 26 20 5a 20 26 | 20 48 20 26 20 24 5c 54 | E & Z &| H & $\T|
|000033b0| 68 65 74 61 24 20 26 20 | 49 20 26 20 4b 20 26 0a |heta$ & |I & K &.|
|000033c0| 20 20 20 24 5c 4c 61 6d | 62 64 61 24 20 26 20 4d | $\Lam|bda$ & M|
|000033d0| 20 5c 5c 0a 20 20 20 5c | 68 6c 69 6e 65 5c 68 6c | \\. \|hline\hl|
|000033e0| 69 6e 65 0a 20 20 20 52 | 6f 6d 61 6e 26 4e 26 43 |ine. R|oman&N&C|
|000033f0| 26 4f 26 50 26 52 26 53 | 26 54 26 55 26 46 26 58 |&O&P&R&S|&T&U&F&X|
|00003400| 26 51 26 57 5c 5c 0a 20 | 20 20 5c 68 6c 69 6e 65 |&Q&W\\. | \hline|
|00003410| 0a 20 20 20 47 72 65 65 | 6b 26 4e 20 26 20 24 5c |. Gree|k&N & $\|
|00003420| 58 69 24 20 26 20 4f 20 | 26 20 24 5c 50 69 24 20 |Xi$ & O |& $\Pi$ |
|00003430| 26 20 50 20 26 20 24 5c | 53 69 67 6d 61 24 20 26 |& P & $\|Sigma$ &|
|00003440| 0a 20 20 20 54 20 26 20 | 24 5c 55 70 73 69 6c 6f |. T & |$\Upsilo|
|00003450| 6e 24 20 26 20 24 5c 50 | 68 69 24 20 26 20 58 20 |n$ & $\P|hi$ & X |
|00003460| 26 20 24 5c 50 73 69 24 | 20 26 20 24 5c 4f 6d 65 |& $\Psi$| & $\Ome|
|00003470| 67 61 24 20 5c 5c 0a 20 | 20 20 5c 68 6c 69 6e 65 |ga$ \\. | \hline|
|00003480| 5c 68 6c 69 6e 65 0a 20 | 20 20 52 6f 6d 61 6e 26 |\hline. | Roman&|
|00003490| 61 26 62 26 67 26 64 26 | 65 26 7a 26 79 26 68 26 |a&b&g&d&|e&z&y&h&|
|000034a0| 69 26 6b 26 6c 26 6d 5c | 5c 0a 20 20 20 5c 68 6c |i&k&l&m\|\. \hl|
|000034b0| 69 6e 65 0a 20 20 20 47 | 72 65 65 6b 26 20 20 20 |ine. G|reek& |
|000034c0| 24 5c 61 6c 70 68 61 24 | 20 26 20 24 5c 62 65 74 |$\alpha$| & $\bet|
|000034d0| 61 24 20 26 20 24 5c 67 | 61 6d 6d 61 24 20 26 20 |a$ & $\g|amma$ & |
|000034e0| 24 5c 64 65 6c 74 61 24 | 20 26 20 24 5c 65 70 73 |$\delta$| & $\eps|
|000034f0| 69 6c 6f 6e 24 20 26 20 | 24 5c 7a 65 74 61 24 20 |ilon$ & |$\zeta$ |
|00003500| 26 20 0a 20 20 20 24 5c | 65 74 61 24 20 26 20 24 |& . $\|eta$ & $|
|00003510| 5c 74 68 65 74 61 24 20 | 26 20 24 5c 69 6f 74 61 |\theta$ |& $\iota|
|00003520| 24 20 26 20 24 5c 6b 61 | 70 70 61 24 20 26 0a 20 |$ & $\ka|ppa$ &. |
|00003530| 20 20 24 5c 6c 61 6d 62 | 64 61 24 20 26 20 24 5c | $\lamb|da$ & $\|
|00003540| 6d 75 24 20 5c 5c 0a 20 | 20 20 5c 68 6c 69 6e 65 |mu$ \\. | \hline|
|00003550| 5c 68 6c 69 6e 65 0a 20 | 20 20 52 6f 6d 61 6e 26 |\hline. | Roman&|
|00003560| 6e 26 63 26 6f 26 70 26 | 72 26 73 26 74 26 75 26 |n&c&o&p&|r&s&t&u&|
|00003570| 66 26 78 26 71 26 77 5c | 5c 0a 20 20 20 5c 68 6c |f&x&q&w\|\. \hl|
|00003580| 69 6e 65 0a 20 20 20 47 | 72 65 65 6b 26 20 24 5c |ine. G|reek& $\|
|00003590| 6e 75 24 20 26 20 24 5c | 78 69 24 20 26 20 6f 20 |nu$ & $\|xi$ & o |
|000035a0| 26 20 24 5c 70 69 24 20 | 26 20 24 5c 72 68 6f 24 |& $\pi$ |& $\rho$|
|000035b0| 20 26 20 24 5c 73 69 67 | 6d 61 24 20 26 0a 20 20 | & $\sig|ma$ &. |
|000035c0| 20 24 5c 74 61 75 24 20 | 26 20 24 5c 75 70 73 69 | $\tau$ |& $\upsi|
|000035d0| 6c 6f 6e 24 20 26 20 24 | 5c 70 68 69 24 20 26 20 |lon$ & $|\phi$ & |
|000035e0| 24 5c 63 68 69 24 20 26 | 20 24 5c 70 73 69 24 20 |$\chi$ &| $\psi$ |
|000035f0| 26 20 24 5c 6f 6d 65 67 | 61 24 20 5c 5c 0a 20 20 |& $\omeg|a$ \\. |
|00003600| 20 5c 68 6c 69 6e 65 0a | 20 20 20 5c 65 6e 64 7b | \hline.| \end{|
|00003610| 74 61 62 75 6c 61 72 7d | 0a 5c 63 61 70 74 69 6f |tabular}|.\captio|
|00003620| 6e 7b 52 6f 6d 61 6e 20 | 63 68 61 72 61 63 74 65 |n{Roman |characte|
|00003630| 72 73 20 63 6f 72 72 65 | 73 70 6f 6e 64 69 6e 67 |rs corre|sponding|
|00003640| 20 74 6f 20 47 72 65 65 | 6b 20 63 68 61 72 61 63 | to Gree|k charac|
|00003650| 74 65 72 73 7d 0a 5c 6c | 61 62 65 6c 7b 67 72 65 |ters}.\l|abel{gre|
|00003660| 65 6b 7d 0a 5c 65 6e 64 | 7b 74 61 62 6c 65 7d 0a |ek}.\end|{table}.|
|00003670| 0a 5c 73 65 63 74 69 6f | 6e 20 7b 54 68 72 65 65 |.\sectio|n {Three|
|00003680| 20 64 69 6d 65 6e 73 69 | 6f 6e 61 6c 20 73 75 72 | dimensi|onal sur|
|00003690| 66 61 63 65 20 70 6c 6f | 74 73 7d 20 5c 6c 61 62 |face plo|ts} \lab|
|000036a0| 65 6c 7b 74 68 72 65 65 | 64 7d 0a 0a 50 4c 50 4c |el{three|d}..PLPL|
|000036b0| 4f 54 20 69 6e 63 6c 75 | 64 65 73 20 72 6f 75 74 |OT inclu|des rout|
|000036c0| 69 6e 65 73 20 74 68 61 | 74 20 77 69 6c 6c 20 72 |ines tha|t will r|
|000036d0| 65 70 72 65 73 65 6e 74 | 20 61 20 73 69 6e 67 6c |epresent| a singl|
|000036e0| 65 2d 76 61 6c 75 65 64 | 20 66 75 6e 63 74 69 6f |e-valued| functio|
|000036f0| 6e 0a 6f 66 20 74 77 6f | 20 76 61 72 69 61 62 6c |n.of two| variabl|
|00003700| 65 73 20 61 73 20 61 20 | 73 75 72 66 61 63 65 2e |es as a |surface.|
|00003710| 20 49 6e 20 74 68 69 73 | 20 73 65 63 74 69 6f 6e | In this| section|
|00003720| 2c 20 77 65 20 73 68 61 | 6c 6c 20 61 73 73 75 6d |, we sha|ll assum|
|00003730| 65 20 74 68 61 74 0a 74 | 68 65 20 66 75 6e 63 74 |e that.t|he funct|
|00003740| 69 6f 6e 20 74 6f 20 62 | 65 20 70 6c 6f 74 74 65 |ion to b|e plotte|
|00003750| 64 20 69 73 20 7b 5c 74 | 74 20 5a 5b 58 5d 5b 59 |d is {\t|t Z[X][Y|
|00003760| 5d 7d 2c 20 77 68 65 72 | 65 20 7b 5c 74 74 20 5a |]}, wher|e {\tt Z|
|00003770| 7d 20 72 65 70 72 65 73 | 65 6e 74 73 0a 74 68 65 |} repres|ents.the|
|00003780| 20 64 65 70 65 6e 64 65 | 6e 74 20 76 61 72 69 61 | depende|nt varia|
|00003790| 62 6c 65 20 61 6e 64 20 | 7b 5c 74 74 20 58 7d 20 |ble and |{\tt X} |
|000037a0| 61 6e 64 20 7b 5c 74 74 | 20 59 7d 20 72 65 70 72 |and {\tt| Y} repr|
|000037b0| 65 73 65 6e 74 20 74 68 | 65 20 69 6e 64 65 70 65 |esent th|e indepe|
|000037c0| 6e 64 65 6e 74 20 0a 76 | 61 72 69 61 62 6c 65 73 |ndent .v|ariables|
|000037d0| 2e 0a 0a 41 73 20 75 73 | 75 61 6c 2c 20 77 65 20 |...As us|ual, we |
|000037e0| 77 6f 75 6c 64 20 6c 69 | 6b 65 20 74 6f 20 72 65 |would li|ke to re|
|000037f0| 66 65 72 20 74 6f 20 61 | 20 74 68 72 65 65 20 64 |fer to a| three d|
|00003800| 69 6d 65 6e 73 69 6f 6e | 61 6c 20 70 6f 69 6e 74 |imension|al point|
|00003810| 20 7b 5c 74 74 20 28 58 | 2c 59 2c 5a 29 7d 0a 69 | {\tt (X|,Y,Z)}.i|
|00003820| 6e 20 74 65 72 6d 73 20 | 6f 66 20 73 6f 6d 65 20 |n terms |of some |
|00003830| 6d 65 61 6e 69 6e 67 66 | 75 6c 20 75 73 65 72 2d |meaningf|ul user-|
|00003840| 73 70 65 63 69 66 69 65 | 64 20 63 6f 6f 72 64 69 |specifie|d coordi|
|00003850| 6e 61 74 65 20 73 79 73 | 74 65 6d 2e 20 54 68 65 |nate sys|tem. The|
|00003860| 73 65 20 61 72 65 0a 63 | 61 6c 6c 65 64 20 7b 5c |se are.c|alled {\|
|00003870| 65 6d 20 74 68 72 65 65 | 2d 64 69 6d 65 6e 73 69 |em three|-dimensi|
|00003880| 6f 6e 61 6c 20 77 6f 72 | 6c 64 20 63 6f 6f 72 64 |onal wor|ld coord|
|00003890| 69 6e 61 74 65 73 7d 2e | 20 57 65 20 6e 65 65 64 |inates}.| We need|
|000038a0| 20 74 6f 20 73 70 65 63 | 69 66 79 20 74 68 65 0a | to spec|ify the.|
|000038b0| 72 61 6e 67 65 73 20 6f | 66 20 74 68 65 73 65 20 |ranges o|f these |
|000038c0| 63 6f 6f 72 64 69 6e 61 | 74 65 73 2c 20 73 6f 20 |coordina|tes, so |
|000038d0| 74 68 61 74 20 74 68 65 | 20 65 6e 74 69 72 65 20 |that the| entire |
|000038e0| 73 75 72 66 61 63 65 20 | 69 73 20 63 6f 6e 74 61 |surface |is conta|
|000038f0| 69 6e 65 64 20 77 69 74 | 68 69 6e 20 74 68 65 0a |ined wit|hin the.|
|00003900| 63 75 62 6f 69 64 20 64 | 65 66 69 6e 65 64 20 62 |cuboid d|efined b|
|00003910| 79 20 24 7b 5c 74 74 20 | 78 6d 69 6e 7d 3c 7b 5c |y ${\tt |xmin}<{\|
|00003920| 74 74 20 78 7d 3c 7b 5c | 74 74 20 78 6d 61 78 7d |tt x}<{\|tt xmax}|
|00003930| 24 2c 0a 24 7b 5c 74 74 | 20 79 6d 69 6e 7d 3c 7b |$,.${\tt| ymin}<{|
|00003940| 5c 74 74 20 79 7d 3c 7b | 5c 74 74 20 79 6d 61 78 |\tt y}<{|\tt ymax|
|00003950| 7d 24 20 61 6e 64 0a 24 | 7b 5c 74 74 20 7a 6d 69 |}$ and.$|{\tt zmi|
|00003960| 6e 7d 3c 7b 5c 74 74 20 | 7a 7d 3c 7b 5c 74 74 20 |n}<{\tt |z}<{\tt |
|00003970| 7a 6d 61 78 7d 24 2e 20 | 54 79 70 69 63 61 6c 6c |zmax}$. |Typicall|
|00003980| 79 2c 20 77 65 20 73 68 | 61 6c 6c 20 77 61 6e 74 |y, we sh|all want|
|00003990| 20 74 6f 20 76 69 65 77 | 20 74 68 65 0a 73 75 72 | to view| the.sur|
|000039a0| 66 61 63 65 20 66 72 6f | 6d 20 61 20 76 61 72 69 |face fro|m a vari|
|000039b0| 65 74 79 20 6f 66 20 61 | 6e 67 6c 65 73 2c 20 61 |ety of a|ngles, a|
|000039c0| 6e 64 20 74 6f 20 66 61 | 63 69 6c 69 74 61 74 65 |nd to fa|cilitate|
|000039d0| 20 74 68 69 73 2c 20 61 | 20 74 77 6f 2d 73 74 61 | this, a| two-sta|
|000039e0| 67 65 0a 6d 61 70 70 69 | 6e 67 20 6f 66 20 74 68 |ge.mappi|ng of th|
|000039f0| 65 20 65 6e 63 6c 6f 73 | 69 6e 67 20 63 75 62 6f |e enclos|ing cubo|
|00003a00| 69 64 20 69 73 20 70 65 | 72 66 6f 72 6d 65 64 2e |id is pe|rformed.|
|00003a10| 20 46 69 72 73 74 6c 79 | 2c 20 69 74 20 69 73 20 | Firstly|, it is |
|00003a20| 6d 61 70 70 65 64 0a 69 | 6e 74 6f 20 61 6e 6f 74 |mapped.i|nto anot|
|00003a30| 68 65 72 20 63 75 62 6f | 69 64 20 63 61 6c 6c 65 |her cubo|id calle|
|00003a40| 64 20 74 68 65 20 7b 5c | 65 6d 20 6e 6f 72 6d 61 |d the {\|em norma|
|00003a50| 6c 69 7a 65 64 20 62 6f | 78 7d 20 77 68 6f 73 65 |lized bo|x} whose|
|00003a60| 20 73 69 7a 65 20 6d 75 | 73 74 20 61 6c 73 6f 0a | size mu|st also.|
|00003a70| 62 65 20 73 70 65 63 69 | 66 69 65 64 20 62 79 20 |be speci|fied by |
|00003a80| 74 68 65 20 75 73 65 72 | 2c 20 61 6e 64 20 73 65 |the user|, and se|
|00003a90| 63 6f 6e 64 6c 79 20 74 | 68 69 73 20 6e 6f 72 6d |condly t|his norm|
|00003aa0| 61 6c 69 7a 65 64 20 62 | 6f 78 20 69 73 20 76 69 |alized b|ox is vi|
|00003ab0| 65 77 65 64 20 66 72 6f | 6d 0a 61 20 70 61 72 74 |ewed fro|m.a part|
|00003ac0| 69 63 75 6c 61 72 20 61 | 7a 69 6d 75 74 68 20 61 |icular a|zimuth a|
|00003ad0| 6e 64 20 65 6c 65 76 61 | 74 69 6f 6e 20 73 6f 20 |nd eleva|tion so |
|00003ae0| 74 68 61 74 20 69 74 20 | 63 61 6e 20 62 65 20 70 |that it |can be p|
|00003af0| 72 6f 6a 65 63 74 65 64 | 20 6f 6e 74 6f 20 74 68 |rojected| onto th|
|00003b00| 65 0a 74 77 6f 2d 64 69 | 6d 65 6e 73 69 6f 6e 61 |e.two-di|mensiona|
|00003b10| 6c 20 77 69 6e 64 6f 77 | 2e 0a 0a 54 68 69 73 20 |l window|...This |
|00003b20| 74 77 6f 2d 73 74 61 67 | 65 20 74 72 61 6e 73 66 |two-stag|e transf|
|00003b30| 6f 72 6d 61 74 69 6f 6e | 20 70 72 6f 63 65 73 73 |ormation| process|
|00003b40| 20 61 6c 6c 6f 77 73 20 | 63 6f 6e 73 69 64 65 72 | allows |consider|
|00003b50| 61 62 6c 65 20 66 6c 65 | 78 69 62 69 6c 69 74 79 |able fle|xibility|
|00003b60| 20 69 6e 0a 73 70 65 63 | 69 66 79 69 6e 67 20 68 | in.spec|ifying h|
|00003b70| 6f 77 20 74 68 65 20 73 | 75 72 66 61 63 65 20 69 |ow the s|urface i|
|00003b80| 73 20 64 65 70 69 63 74 | 65 64 2e 20 54 68 65 20 |s depict|ed. The |
|00003b90| 6c 65 6e 67 74 68 73 20 | 6f 66 20 74 68 65 20 73 |lengths |of the s|
|00003ba0| 69 64 65 73 20 6f 66 20 | 74 68 65 0a 6e 6f 72 6d |ides of |the.norm|
|00003bb0| 61 6c 69 7a 65 64 20 62 | 6f 78 20 61 72 65 20 69 |alized b|ox are i|
|00003bc0| 6e 64 65 70 65 6e 64 65 | 6e 74 20 6f 66 20 74 68 |ndepende|nt of th|
|00003bd0| 65 20 77 6f 72 6c 64 20 | 63 6f 6f 72 64 69 6e 61 |e world |coordina|
|00003be0| 74 65 20 72 61 6e 67 65 | 73 20 6f 66 20 65 61 63 |te range|s of eac|
|00003bf0| 68 20 6f 66 20 74 68 65 | 0a 76 61 72 69 61 62 6c |h of the|.variabl|
|00003c00| 65 73 2c 20 6d 61 6b 69 | 6e 67 20 69 74 20 70 6f |es, maki|ng it po|
|00003c10| 73 73 69 62 6c 65 20 74 | 6f 20 75 73 65 20 60 60 |ssible t|o use ``|
|00003c20| 72 65 61 73 6f 6e 61 62 | 6c 65 27 27 20 76 69 65 |reasonab|le'' vie|
|00003c30| 77 69 6e 67 20 61 6e 67 | 6c 65 73 20 65 76 65 6e |wing ang|les even|
|00003c40| 20 69 66 20 74 68 65 0a | 72 61 6e 67 65 73 20 6f | if the.|ranges o|
|00003c50| 66 20 74 68 65 20 77 6f | 72 6c 64 20 63 6f 6f 72 |f the wo|rld coor|
|00003c60| 64 69 6e 61 74 65 73 20 | 6f 6e 20 74 68 65 20 61 |dinates |on the a|
|00003c70| 78 65 73 20 61 72 65 20 | 76 65 72 79 20 64 69 66 |xes are |very dif|
|00003c80| 66 65 72 65 6e 74 2e 20 | 54 68 65 20 73 69 7a 65 |ferent. |The size|
|00003c90| 20 6f 66 20 74 68 65 0a | 6e 6f 72 6d 61 6c 69 7a | of the.|normaliz|
|00003ca0| 65 64 20 62 6f 78 20 69 | 73 20 64 65 74 65 72 6d |ed box i|s determ|
|00003cb0| 69 6e 65 64 20 65 73 73 | 65 6e 74 69 61 6c 6c 79 |ined ess|entially|
|00003cc0| 20 62 79 20 74 68 65 20 | 73 69 7a 65 20 6f 66 20 | by the |size of |
|00003cd0| 74 68 65 20 74 77 6f 2d | 64 69 6d 65 6e 73 69 6f |the two-|dimensio|
|00003ce0| 6e 61 6c 0a 77 69 6e 64 | 6f 77 20 69 6e 74 6f 20 |nal.wind|ow into |
|00003cf0| 77 68 69 63 68 20 69 74 | 20 69 73 20 74 6f 20 62 |which it| is to b|
|00003d00| 65 20 6d 61 70 70 65 64 | 2e 20 54 68 65 20 6e 6f |e mapped|. The no|
|00003d10| 72 6d 61 6c 69 7a 65 64 | 20 62 6f 78 20 69 73 20 |rmalized| box is |
|00003d20| 63 65 6e 74 72 65 64 20 | 61 62 6f 75 74 20 74 68 |centred |about th|
|00003d30| 65 0a 6f 72 69 67 69 6e | 20 69 6e 20 74 68 65 20 |e.origin| in the |
|00003d40| 24 78 24 20 61 6e 64 20 | 24 79 24 20 64 69 72 65 |$x$ and |$y$ dire|
|00003d50| 63 74 69 6f 6e 73 2c 20 | 62 75 74 20 72 65 73 74 |ctions, |but rest|
|00003d60| 73 20 6f 6e 20 74 68 65 | 20 70 6c 61 6e 65 20 24 |s on the| plane $|
|00003d70| 7b 5c 74 74 20 7a 3d 30 | 7d 24 2e 20 49 74 20 69 |{\tt z=0|}$. It i|
|00003d80| 73 0a 76 69 65 77 65 64 | 20 62 79 20 61 6e 20 6f |s.viewed| by an o|
|00003d90| 62 73 65 72 76 65 72 20 | 6c 6f 63 61 74 65 64 20 |bserver |located |
|00003da0| 61 74 20 61 6c 74 69 74 | 75 64 65 20 7b 5c 74 74 |at altit|ude {\tt|
|00003db0| 20 61 6c 74 7d 20 61 6e | 64 20 61 7a 69 6d 75 74 | alt} an|d azimut|
|00003dc0| 68 20 7b 5c 74 74 20 61 | 7a 7d 2c 20 77 68 65 72 |h {\tt a|z}, wher|
|00003dd0| 65 0a 62 6f 74 68 20 61 | 6e 67 6c 65 73 20 61 72 |e.both a|ngles ar|
|00003de0| 65 20 6d 65 61 73 75 72 | 65 64 20 69 6e 20 64 65 |e measur|ed in de|
|00003df0| 67 72 65 65 73 2e 20 54 | 68 65 20 61 6c 74 69 74 |grees. T|he altit|
|00003e00| 75 64 65 20 73 68 6f 75 | 6c 64 20 62 65 20 72 65 |ude shou|ld be re|
|00003e10| 73 74 72 69 63 74 65 64 | 20 74 6f 20 74 68 65 0a |stricted| to the.|
|00003e20| 72 61 6e 67 65 20 7a 65 | 72 6f 20 74 6f 20 6e 69 |range ze|ro to ni|
|00003e30| 6e 65 74 79 20 64 65 67 | 72 65 65 73 20 66 6f 72 |nety deg|rees for|
|00003e40| 20 70 72 6f 70 65 72 20 | 6f 70 65 72 61 74 69 6f | proper |operatio|
|00003e50| 6e 2c 20 61 6e 64 20 72 | 65 70 72 65 73 65 6e 74 |n, and r|epresent|
|00003e60| 73 20 74 68 65 20 76 69 | 65 77 69 6e 67 0a 61 6e |s the vi|ewing.an|
|00003e70| 67 6c 65 20 61 62 6f 76 | 65 20 74 68 65 20 78 79 |gle abov|e the xy|
|00003e80| 20 70 6c 61 6e 65 2e 20 | 54 68 65 20 61 7a 69 6d | plane. |The azim|
|00003e90| 75 74 68 20 69 73 20 64 | 65 66 69 6e 65 64 20 73 |uth is d|efined s|
|00003ea0| 6f 20 74 68 61 74 20 77 | 68 65 6e 20 7b 5c 74 74 |o that w|hen {\tt|
|00003eb0| 20 61 7a 3d 30 7d 2c 20 | 74 68 65 0a 6f 62 73 65 | az=0}, |the.obse|
|00003ec0| 72 76 65 72 20 73 65 65 | 73 20 74 68 65 20 78 7a |rver see|s the xz|
|00003ed0| 20 70 6c 61 6e 65 20 66 | 61 63 65 20 6f 6e 2c 20 | plane f|ace on, |
|00003ee0| 61 6e 64 20 61 73 20 74 | 68 65 20 61 6e 67 6c 65 |and as t|he angle|
|00003ef0| 20 69 73 20 69 6e 63 72 | 65 61 73 65 64 2c 20 74 | is incr|eased, t|
|00003f00| 68 65 20 6f 62 73 65 72 | 76 65 72 0a 6d 6f 76 65 |he obser|ver.move|
|00003f10| 73 20 63 6c 6f 63 6b 77 | 69 73 65 20 61 72 6f 75 |s clockw|ise arou|
|00003f20| 6e 64 20 74 68 65 20 62 | 6f 78 20 61 73 20 76 69 |nd the b|ox as vi|
|00003f30| 65 77 65 64 20 66 72 6f | 6d 20 61 62 6f 76 65 20 |ewed fro|m above |
|00003f40| 74 68 65 20 78 79 20 70 | 6c 61 6e 65 2e 20 54 68 |the xy p|lane. Th|
|00003f50| 65 20 61 7a 69 6d 75 74 | 68 0a 63 61 6e 20 74 61 |e azimut|h.can ta|
|00003f60| 6b 65 20 6f 6e 20 61 6e | 79 20 76 61 6c 75 65 2e |ke on an|y value.|
|00003f70| 20 0a 0a 54 68 65 20 66 | 69 72 73 74 20 73 74 65 | ..The f|irst ste|
|00003f80| 70 20 69 6e 20 64 72 61 | 77 69 6e 67 20 61 20 73 |p in dra|wing a s|
|00003f90| 75 72 66 61 63 65 20 70 | 6c 6f 74 20 69 73 20 74 |urface p|lot is t|
|00003fa0| 6f 20 64 65 63 69 64 65 | 20 6f 6e 20 74 68 65 20 |o decide| on the |
|00003fb0| 73 69 7a 65 20 6f 66 20 | 74 68 65 0a 74 77 6f 2d |size of |the.two-|
|00003fc0| 64 69 6d 65 6e 73 69 6f | 6e 61 6c 20 77 69 6e 64 |dimensio|nal wind|
|00003fd0| 6f 77 20 61 6e 64 20 74 | 68 65 20 6e 6f 72 6d 61 |ow and t|he norma|
|00003fe0| 6c 69 7a 65 64 20 62 6f | 78 2e 20 46 6f 72 20 65 |lized bo|x. For e|
|00003ff0| 78 61 6d 70 6c 65 2c 20 | 77 65 20 63 6f 75 6c 64 |xample, |we could|
|00004000| 20 63 68 6f 6f 73 65 0a | 74 68 65 20 6e 6f 72 6d | choose.|the norm|
|00004010| 61 6c 69 7a 65 64 20 62 | 6f 78 20 74 6f 20 68 61 |alized b|ox to ha|
|00004020| 76 65 20 73 69 64 65 73 | 20 6f 66 20 6c 65 6e 67 |ve sides| of leng|
|00004030| 74 68 0a 5c 62 65 67 69 | 6e 7b 76 65 72 62 61 74 |th.\begi|n{verbat|
|00004040| 69 6d 7d 0a 62 61 73 65 | 78 3d 32 2e 30 3b 0a 62 |im}.base|x=2.0;.b|
|00004050| 61 73 65 79 3d 34 2e 30 | 3b 0a 68 65 69 67 68 74 |asey=4.0|;.height|
|00004060| 3d 33 2e 30 3b 0a 5c 65 | 6e 64 7b 76 65 72 62 61 |=3.0;.\e|nd{verba|
|00004070| 74 69 6d 7d 0a 41 20 72 | 65 61 73 6f 6e 61 62 6c |tim}.A r|easonabl|
|00004080| 65 20 72 61 6e 67 65 20 | 66 6f 72 20 74 68 65 20 |e range |for the |
|00004090| 24 78 24 20 63 6f 6f 72 | 64 69 6e 61 74 65 20 6f |$x$ coor|dinate o|
|000040a0| 66 20 74 68 65 20 74 77 | 6f 2d 64 69 6d 65 6e 73 |f the tw|o-dimens|
|000040b0| 69 6f 6e 61 6c 0a 77 69 | 6e 64 6f 77 20 69 73 20 |ional.wi|ndow is |
|000040c0| 2d 32 2e 35 20 74 6f 20 | 2b 32 2e 35 2c 20 73 69 |-2.5 to |+2.5, si|
|000040d0| 6e 63 65 20 74 68 65 20 | 6c 65 6e 67 74 68 20 6f |nce the |length o|
|000040e0| 66 20 74 68 65 20 64 69 | 61 67 6f 6e 61 6c 20 61 |f the di|agonal a|
|000040f0| 63 72 6f 73 73 20 74 68 | 65 20 62 61 73 65 20 6f |cross th|e base o|
|00004100| 66 20 0a 74 68 65 20 6e | 6f 72 6d 61 6c 69 7a 65 |f .the n|ormalize|
|00004110| 64 20 62 6f 78 20 69 73 | 20 24 5c 73 71 72 74 7b |d box is| $\sqrt{|
|00004120| 32 5e 32 2b 34 5e 32 7d | 20 3d 20 32 5c 73 71 72 |2^2+4^2}| = 2\sqr|
|00004130| 74 7b 35 7d 24 2c 20 77 | 68 69 63 68 20 66 69 74 |t{5}$, w|hich fit|
|00004140| 73 20 69 6e 74 6f 20 74 | 68 69 73 20 0a 63 6f 6f |s into t|his .coo|
|00004150| 72 64 69 6e 61 74 65 20 | 72 61 6e 67 65 2e 20 41 |rdinate |range. A|
|00004160| 20 72 65 61 73 6f 6e 61 | 62 6c 65 20 72 61 6e 67 | reasona|ble rang|
|00004170| 65 20 66 6f 72 20 74 68 | 65 20 24 79 24 20 63 6f |e for th|e $y$ co|
|00004180| 6f 72 64 69 6e 61 74 65 | 20 6f 66 20 74 68 65 20 |ordinate| of the |
|00004190| 74 77 6f 0a 64 69 6d 65 | 6e 73 69 6f 6e 61 6c 20 |two.dime|nsional |
|000041a0| 77 69 6e 64 6f 77 20 69 | 6e 20 74 68 69 73 20 63 |window i|n this c|
|000041b0| 61 73 65 20 69 73 20 2d | 32 2e 35 20 74 6f 20 2b |ase is -|2.5 to +|
|000041c0| 34 2c 20 61 73 20 74 68 | 65 20 74 68 65 20 70 72 |4, as th|e the pr|
|000041d0| 6f 6a 65 63 74 69 6f 6e | 20 6f 66 20 74 68 65 0a |ojection| of the.|
|000041e0| 6e 6f 72 6d 61 6c 69 7a | 65 64 20 62 6f 78 20 6c |normaliz|ed box l|
|000041f0| 69 65 73 20 69 6e 20 74 | 68 69 73 20 72 61 6e 67 |ies in t|his rang|
|00004200| 65 20 66 6f 72 20 74 68 | 65 20 61 6c 6c 6f 77 65 |e for th|e allowe|
|00004210| 64 20 72 61 6e 67 65 20 | 6f 66 20 76 69 65 77 69 |d range |of viewi|
|00004220| 6e 67 20 61 6e 67 6c 65 | 73 2e 0a 0a 54 68 65 20 |ng angle|s...The |
|00004230| 72 6f 75 74 69 6e 65 20 | 5c 72 6f 75 7b 70 6c 77 |routine |\rou{plw|
|00004240| 69 6e 64 7d 20 6f 72 20 | 5c 72 6f 75 7b 70 6c 65 |ind} or |\rou{ple|
|00004250| 6e 76 7d 20 69 73 20 75 | 73 65 64 20 69 6e 20 74 |nv} is u|sed in t|
|00004260| 68 65 20 75 73 75 61 6c | 20 77 61 79 0a 74 6f 20 |he usual| way.to |
|00004270| 65 73 74 61 62 6c 69 73 | 68 20 74 68 65 20 73 69 |establis|h the si|
|00004280| 7a 65 20 6f 66 20 74 68 | 65 20 74 77 6f 2d 64 69 |ze of th|e two-di|
|00004290| 6d 65 6e 73 69 6f 6e 61 | 6c 20 77 69 6e 64 6f 77 |mensiona|l window|
|000042a0| 2e 20 54 68 65 20 72 6f | 75 74 69 6e 65 0a 5c 72 |. The ro|utine.\r|
|000042b0| 6f 75 7b 70 6c 77 33 64 | 7d 20 6d 75 73 74 20 74 |ou{plw3d|} must t|
|000042c0| 68 65 6e 20 62 65 20 63 | 61 6c 6c 65 64 20 74 6f |hen be c|alled to|
|000042d0| 20 65 73 74 61 62 6c 69 | 73 68 20 74 68 65 20 72 | establi|sh the r|
|000042e0| 61 6e 67 65 20 6f 66 20 | 74 68 65 20 74 68 72 65 |ange of |the thre|
|000042f0| 65 0a 64 69 6d 65 6e 73 | 69 6f 6e 61 6c 20 77 6f |e.dimens|ional wo|
|00004300| 72 6c 64 20 63 6f 6f 72 | 64 69 6e 61 74 65 73 2c |rld coor|dinates,|
|00004310| 20 74 68 65 20 73 69 7a | 65 20 6f 66 20 74 68 65 | the siz|e of the|
|00004320| 20 6e 6f 72 6d 61 6c 69 | 7a 65 64 20 62 6f 78 20 | normali|zed box |
|00004330| 61 6e 64 20 74 68 65 0a | 76 69 65 77 69 6e 67 20 |and the.|viewing |
|00004340| 61 6e 67 6c 65 73 2e 20 | 41 66 74 65 72 20 63 61 |angles. |After ca|
|00004350| 6c 6c 69 6e 67 20 7b 5c | 74 74 20 70 6c 77 33 64 |lling {\|tt plw3d|
|00004360| 7d 2c 20 74 68 65 20 61 | 63 74 75 61 6c 20 73 75 |}, the a|ctual su|
|00004370| 72 66 61 63 65 20 69 73 | 0a 64 72 61 77 6e 20 62 |rface is|.drawn b|
|00004380| 79 20 61 20 63 61 6c 6c | 20 74 6f 20 5c 72 6f 75 |y a call| to \rou|
|00004390| 7b 70 6c 6f 74 33 64 7d | 2e 0a 0a 46 6f 72 20 65 |{plot3d}|...For e|
|000043a0| 78 61 6d 70 6c 65 2c 20 | 69 66 20 74 68 65 20 74 |xample, |if the t|
|000043b0| 68 72 65 65 2d 64 69 6d | 65 6e 73 69 6f 6e 61 6c |hree-dim|ensional|
|000043c0| 20 77 6f 72 6c 64 2d 63 | 6f 6f 72 64 69 6e 61 74 | world-c|oordinat|
|000043d0| 65 20 72 61 6e 67 65 73 | 20 61 72 65 0a 24 2d 31 |e ranges| are.$-1|
|000043e0| 30 2e 30 5c 6c 65 7b 5c | 74 74 20 78 7d 5c 6c 65 |0.0\le{\|tt x}\le|
|000043f0| 20 31 30 2e 30 24 2c 20 | 24 2d 33 2e 30 5c 6c 65 | 10.0$, |$-3.0\le|
|00004400| 7b 5c 74 74 20 79 7d 5c | 6c 65 20 2b 37 2e 30 24 |{\tt y}\|le +7.0$|
|00004410| 20 61 6e 64 0a 24 30 2e | 30 5c 6c 65 7b 5c 74 74 | and.$0.|0\le{\tt|
|00004420| 20 7a 7d 5c 6c 65 20 38 | 2e 30 24 2c 20 77 65 20 | z}\le 8|.0$, we |
|00004430| 63 6f 75 6c 64 20 75 73 | 65 20 74 68 65 20 66 6f |could us|e the fo|
|00004440| 6c 6c 6f 77 69 6e 67 20 | 73 74 61 74 65 6d 65 6e |llowing |statemen|
|00004450| 74 73 3a 0a 5c 62 65 67 | 69 6e 7b 76 65 72 62 61 |ts:.\beg|in{verba|
|00004460| 74 69 6d 7d 0a 20 20 20 | 20 20 20 78 6d 69 6e 32 |tim}. | xmin2|
|00004470| 64 20 3d 20 2d 32 2e 35 | 3b 20 20 20 20 20 20 20 |d = -2.5|; |
|00004480| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004490| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000044a0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 0a 20 20 | | . |
|000044b0| 20 20 20 20 78 6d 61 78 | 32 64 20 3d 20 20 32 2e | xmax|2d = 2.|
|000044c0| 35 3b 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |5; | |
|000044d0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000044e0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000044f0| 20 20 20 20 20 0a 20 20 | 20 20 20 20 79 6d 69 6e | . | ymin|
|00004500| 32 64 20 3d 20 2d 32 2e | 35 3b 20 20 20 20 20 20 |2d = -2.|5; |
|00004510| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004520| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004530| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 0a 20 | | . |
|00004540| 20 20 20 20 20 79 6d 61 | 78 32 64 20 3d 20 20 34 | yma|x2d = 4|
|00004550| 2e 30 3b 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |.0; | |
|00004560| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004570| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004580| 20 20 20 20 20 20 20 0a | 20 20 20 20 20 20 70 6c | .| pl|
|00004590| 65 6e 76 28 78 6d 69 6e | 32 64 2c 78 6d 61 78 32 |env(xmin|2d,xmax2|
|000045a0| 64 2c 79 6d 69 6e 32 64 | 2c 79 6d 61 78 32 64 29 |d,ymin2d|,ymax2d)|
|000045b0| 3b 0a 20 20 20 20 20 20 | 62 61 73 65 78 20 3d 20 |;. |basex = |
|000045c0| 32 2e 30 3b 20 20 20 20 | 20 20 20 20 20 20 20 20 |2.0; | |
|000045d0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000045e0| 20 20 20 0a 20 20 20 20 | 20 20 62 61 73 65 79 20 | . | basey |
|000045f0| 3d 20 34 2e 30 3b 20 20 | 20 20 20 20 20 20 20 20 |= 4.0; | |
|00004600| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004610| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004620| 20 20 20 20 20 20 20 20 | 20 20 20 20 0a 20 20 20 | | . |
|00004630| 20 20 20 68 65 69 67 68 | 74 20 3d 20 33 2e 30 3b | heigh|t = 3.0;|
|00004640| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004650| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004660| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004670| 20 20 20 20 20 0a 20 20 | 20 20 20 20 78 6d 69 6e | . | xmin|
|00004680| 20 3d 20 2d 31 30 2e 30 | 3b 20 20 20 20 20 20 20 | = -10.0|; |
|00004690| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000046a0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000046b0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 0a 20 | | . |
|000046c0| 20 20 20 20 20 78 6d 61 | 78 20 3d 20 31 30 2e 30 | xma|x = 10.0|
|000046d0| 3b 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |; | |
|000046e0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000046f0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004700| 20 20 20 20 20 20 0a 20 | 20 20 20 20 20 79 6d 69 | . | ymi|
|00004710| 6e 20 3d 20 2d 33 2e 30 | 3b 20 20 20 20 20 20 20 |n = -3.0|; |
|00004720| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004730| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004740| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 0a | | .|
|00004750| 20 20 20 20 20 20 79 6d | 61 78 20 3d 20 37 2e 30 | ym|ax = 7.0|
|00004760| 3b 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |; | |
|00004770| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004780| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004790| 20 20 20 20 20 20 20 0a | 20 20 20 20 20 20 7a 6d | .| zm|
|000047a0| 69 6e 20 3d 20 30 2e 30 | 3b 20 20 20 20 20 20 20 |in = 0.0|; |
|000047b0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000047c0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000047d0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000047e0| 0a 20 20 20 20 20 20 7a | 6d 61 78 20 3d 20 38 2e |. z|max = 8.|
|000047f0| 30 3b 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |0; | |
|00004800| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004810| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004820| 20 20 20 20 20 20 20 20 | 20 0a 20 20 20 20 20 20 | | . |
|00004830| 61 6c 74 20 3d 20 34 35 | 2e 30 3b 20 20 20 20 20 |alt = 45|.0; |
|00004840| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004850| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004860| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00004870| 20 20 0a 20 20 20 20 20 | 20 61 7a 20 3d 20 33 30 | . | az = 30|
|00004880| 2e 30 3b 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |.0; | |
|00004890| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000048a0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000048b0| 20 20 20 20 20 20 20 20 | 20 20 0a 20 20 20 20 20 | | . |
|000048c0| 20 70 6c 77 33 64 28 62 | 61 73 65 78 2c 62 61 73 | plw3d(b|asex,bas|
|000048d0| 65 79 2c 68 65 69 67 68 | 74 2c 78 6d 69 6e 2c 78 |ey,heigh|t,xmin,x|
|000048e0| 6d 61 78 2c 79 6d 69 6e | 2c 79 6d 61 78 2c 7a 6d |max,ymin|,ymax,zm|
|000048f0| 69 6e 2c 7a 6d 61 78 2c | 61 6c 74 2c 61 7a 29 3b |in,zmax,|alt,az);|
|00004900| 0a 20 20 20 20 20 20 70 | 6c 6f 74 33 64 28 78 2c |. p|lot3d(x,|
|00004910| 79 2c 7a 2c 77 6f 72 6b | 2c 6c 79 2c 6e 78 2c 6e |y,z,work|,ly,nx,n|
|00004920| 79 2c 6f 70 74 29 3b 0a | 5c 65 6e 64 7b 76 65 72 |y,opt);.|\end{ver|
|00004930| 62 61 74 69 6d 7d 0a 0a | 54 68 65 20 76 61 6c 75 |batim}..|The valu|
|00004940| 65 73 20 6f 66 20 74 68 | 65 20 66 75 6e 63 74 69 |es of th|e functi|
|00004950| 6f 6e 20 61 72 65 20 73 | 74 6f 72 65 64 20 69 6e |on are s|tored in|
|00004960| 20 61 20 74 77 6f 2d 64 | 69 6d 65 6e 73 69 6f 6e | a two-d|imension|
|00004970| 61 6c 0a 61 72 72 61 79 | 20 7b 5c 74 74 20 7a 5b |al.array| {\tt z[|
|00004980| 5d 5b 6c 79 5d 7d 20 77 | 68 65 72 65 20 74 68 65 |][ly]} w|here the|
|00004990| 20 61 72 72 61 79 20 65 | 6c 65 6d 65 6e 74 20 7b | array e|lement {|
|000049a0| 5c 74 74 20 7a 5b 69 5d | 5b 6a 5d 7d 20 63 6f 6e |\tt z[i]|[j]} con|
|000049b0| 74 61 69 6e 73 20 74 68 | 65 20 76 61 6c 75 65 0a |tains th|e value.|
|000049c0| 6f 66 20 74 68 65 20 66 | 75 6e 63 74 69 6f 6e 20 |of the f|unction |
|000049d0| 61 74 20 74 68 65 20 70 | 6f 69 6e 74 20 24 78 5f |at the p|oint $x_|
|000049e0| 69 24 2c 20 24 79 5f 6a | 24 2e 20 4e 6f 74 65 20 |i$, $y_j|$. Note |
|000049f0| 74 68 61 74 20 74 68 65 | 20 76 61 6c 75 65 73 20 |that the| values |
|00004a00| 6f 66 0a 74 68 65 20 69 | 6e 64 65 70 65 6e 64 65 |of.the i|ndepende|
|00004a10| 6e 74 20 76 61 72 69 61 | 62 6c 65 73 20 24 78 5f |nt varia|bles $x_|
|00004a20| 69 24 20 61 6e 64 20 24 | 79 5f 6a 24 20 64 6f 20 |i$ and $|y_j$ do |
|00004a30| 6e 6f 74 20 6e 65 65 64 | 20 74 6f 20 62 65 20 65 |not need| to be e|
|00004a40| 71 75 61 6c 6c 79 20 73 | 70 61 63 65 64 2c 0a 62 |qually s|paced,.b|
|00004a50| 75 74 20 74 68 65 79 20 | 6d 75 73 74 20 6c 69 65 |ut they |must lie|
|00004a60| 20 6f 6e 20 61 20 72 65 | 63 74 61 6e 67 75 6c 61 | on a re|ctangula|
|00004a70| 72 20 67 72 69 64 2e 20 | 54 68 75 73 20 74 77 6f |r grid. |Thus two|
|00004a80| 20 66 75 72 74 68 65 72 | 20 61 72 72 61 79 73 20 | further| arrays |
|00004a90| 7b 5c 74 74 20 78 5b 6e | 78 5d 7d 0a 61 6e 64 20 |{\tt x[n|x]}.and |
|00004aa0| 7b 5c 74 74 20 79 5b 6e | 79 5d 7d 20 61 72 65 20 |{\tt y[n|y]} are |
|00004ab0| 72 65 71 75 69 72 65 64 | 20 61 73 20 61 72 67 75 |required| as argu|
|00004ac0| 6d 65 6e 74 73 20 74 6f | 20 7b 5c 74 74 20 70 6c |ments to| {\tt pl|
|00004ad0| 6f 74 33 64 7d 20 74 6f | 20 73 70 65 63 69 66 79 |ot3d} to| specify|
|00004ae0| 20 74 68 65 0a 76 61 6c | 75 65 73 20 6f 66 20 74 | the.val|ues of t|
|00004af0| 68 65 20 69 6e 64 65 70 | 65 6e 64 65 6e 74 20 76 |he indep|endent v|
|00004b00| 61 72 69 61 62 6c 65 73 | 2e 20 54 68 65 20 76 61 |ariables|. The va|
|00004b10| 6c 75 65 73 20 69 6e 20 | 74 68 65 20 61 72 72 61 |lues in |the arra|
|00004b20| 79 73 20 78 20 61 6e 64 | 20 79 20 6d 75 73 74 20 |ys x and| y must |
|00004b30| 0a 62 65 20 73 74 72 69 | 63 74 6c 79 20 69 6e 63 |.be stri|ctly inc|
|00004b40| 72 65 61 73 69 6e 67 20 | 77 69 74 68 20 74 68 65 |reasing |with the|
|00004b50| 20 69 6e 64 65 78 2e 20 | 54 68 65 20 61 72 67 75 | index. |The argu|
|00004b60| 6d 65 6e 74 20 7b 5c 74 | 74 20 6f 70 74 7d 20 73 |ment {\t|t opt} s|
|00004b70| 70 65 63 69 66 69 65 73 | 0a 68 6f 77 20 74 68 65 |pecifies|.how the|
|00004b80| 20 73 75 72 66 61 63 65 | 20 69 73 20 6f 75 74 6c | surface| is outl|
|00004b90| 69 6e 65 64 2e 20 49 66 | 20 7b 5c 74 74 20 6f 70 |ined. If| {\tt op|
|00004ba0| 74 3d 31 7d 2c 20 61 20 | 6c 69 6e 65 20 69 73 20 |t=1}, a |line is |
|00004bb0| 64 72 61 77 6e 20 72 65 | 70 72 65 73 65 6e 74 69 |drawn re|presenti|
|00004bc0| 6e 67 0a 7a 20 61 73 20 | 61 20 66 75 6e 63 74 69 |ng.z as |a functi|
|00004bd0| 6f 6e 20 6f 66 20 78 20 | 66 6f 72 20 65 61 63 68 |on of x |for each|
|00004be0| 20 76 61 6c 75 65 20 6f | 66 20 79 2c 20 69 66 20 | value o|f y, if |
|00004bf0| 7b 5c 74 74 20 6f 70 74 | 3d 32 7d 2c 20 61 20 6c |{\tt opt|=2}, a l|
|00004c00| 69 6e 65 20 69 73 20 64 | 72 61 77 6e 0a 72 65 70 |ine is d|rawn.rep|
|00004c10| 72 65 73 65 6e 74 69 6e | 67 20 7a 20 61 73 20 61 |resentin|g z as a|
|00004c20| 20 66 75 6e 63 74 69 6f | 6e 20 6f 66 20 79 20 66 | functio|n of y f|
|00004c30| 6f 72 20 65 61 63 68 20 | 76 61 6c 75 65 20 6f 66 |or each |value of|
|00004c40| 20 78 2c 20 61 6e 64 20 | 69 66 20 7b 5c 74 74 20 | x, and |if {\tt |
|00004c50| 6f 70 74 3d 33 7d 2c 0a | 61 20 6e 65 74 20 6f 66 |opt=3},.|a net of|
|00004c60| 20 6c 69 6e 65 73 20 69 | 73 20 64 72 61 77 6e 2e | lines i|s drawn.|
|00004c70| 20 54 68 65 20 66 69 72 | 73 74 20 74 77 6f 20 6f | The fir|st two o|
|00004c80| 70 74 69 6f 6e 73 20 6d | 61 79 20 62 65 20 70 72 |ptions m|ay be pr|
|00004c90| 65 66 65 72 61 62 6c 65 | 20 69 66 20 6f 6e 65 20 |eferable| if one |
|00004ca0| 6f 66 0a 74 68 65 20 69 | 6e 64 65 70 65 6e 64 65 |of.the i|ndepende|
|00004cb0| 6e 74 20 76 61 72 69 61 | 62 6c 65 73 20 69 73 20 |nt varia|bles is |
|00004cc0| 74 6f 20 62 65 20 72 65 | 67 61 72 64 65 64 20 61 |to be re|garded a|
|00004cd0| 73 20 61 20 70 61 72 61 | 6d 65 74 65 72 2c 20 77 |s a para|meter, w|
|00004ce0| 68 69 6c 73 74 20 74 68 | 65 20 74 68 69 72 64 0a |hilst th|e third.|
|00004cf0| 69 73 20 62 65 74 74 65 | 72 20 66 6f 72 20 67 65 |is bette|r for ge|
|00004d00| 74 74 69 6e 67 20 61 6e | 20 6f 76 65 72 61 6c 6c |tting an| overall|
|00004d10| 20 70 69 63 74 75 72 65 | 20 6f 66 20 74 68 65 20 | picture| of the |
|00004d20| 73 75 72 66 61 63 65 2e | 20 54 68 65 20 66 69 6e |surface.| The fin|
|00004d30| 61 6c 20 70 61 72 61 6d | 65 74 65 72 0a 7b 5c 74 |al param|eter.{\t|
|00004d40| 74 20 77 6f 72 6b 7d 20 | 69 73 20 61 6e 20 69 6e |t work} |is an in|
|00004d50| 74 65 67 65 72 20 61 72 | 72 61 79 20 77 69 74 68 |teger ar|ray with|
|00004d60| 20 61 74 20 6c 65 61 73 | 74 20 66 6f 75 72 20 74 | at leas|t four t|
|00004d70| 69 6d 65 73 20 7b 5c 74 | 74 20 6d 61 78 28 6e 78 |imes {\t|t max(nx|
|00004d80| 2c 6e 79 29 7d 0a 70 6f | 69 6e 74 73 2c 20 77 68 |,ny)}.po|ints, wh|
|00004d90| 69 63 68 20 69 73 20 72 | 65 71 75 69 72 65 64 20 |ich is r|equired |
|00004da0| 66 6f 72 20 77 6f 72 6b | 73 70 61 63 65 2e 0a 0a |for work|space...|
|00004db0| 4c 61 62 65 6c 6c 69 6e | 67 20 61 20 74 68 72 65 |Labellin|g a thre|
|00004dc0| 65 2d 64 69 6d 65 6e 73 | 69 6f 6e 61 6c 20 70 6c |e-dimens|ional pl|
|00004dd0| 6f 74 20 69 73 20 73 6f | 6d 65 77 68 61 74 20 6d |ot is so|mewhat m|
|00004de0| 6f 72 65 20 63 6f 6d 70 | 6c 69 63 61 74 65 64 20 |ore comp|licated |
|00004df0| 74 68 61 6e 20 61 20 74 | 77 6f 0a 64 69 6d 65 6e |than a t|wo.dimen|
|00004e00| 73 69 6f 6e 61 6c 20 70 | 6c 6f 74 20 64 75 65 20 |sional p|lot due |
|00004e10| 74 6f 20 74 68 65 20 6e | 65 65 64 20 66 6f 72 20 |to the n|eed for |
|00004e20| 73 6b 65 77 69 6e 67 20 | 74 68 65 20 63 68 61 72 |skewing |the char|
|00004e30| 61 63 74 65 72 73 20 69 | 6e 20 74 68 65 20 6c 61 |acters i|n the la|
|00004e40| 62 65 6c 0a 73 6f 20 74 | 68 61 74 20 74 68 65 79 |bel.so t|hat they|
|00004e50| 20 61 72 65 20 70 61 72 | 61 6c 6c 65 6c 20 74 6f | are par|allel to|
|00004e60| 20 74 68 65 20 63 6f 6f | 72 64 69 6e 61 74 65 20 | the coo|rdinate |
|00004e70| 61 78 65 73 2e 20 54 68 | 65 20 72 6f 75 74 69 6e |axes. Th|e routin|
|00004e80| 65 20 5c 72 6f 75 7b 70 | 6c 62 6f 78 33 7d 0a 74 |e \rou{p|lbox3}.t|
|00004e90| 68 75 73 20 63 6f 6d 62 | 69 6e 65 73 20 74 68 65 |hus comb|ines the|
|00004ea0| 20 66 75 6e 63 74 69 6f | 6e 73 20 6f 66 20 62 6f | functio|ns of bo|
|00004eb0| 78 20 64 72 61 77 69 6e | 67 20 61 6e 64 20 6c 61 |x drawin|g and la|
|00004ec0| 62 65 6c 6c 69 6e 67 2e | 20 49 74 73 20 70 61 72 |belling.| Its par|
|00004ed0| 61 6d 65 74 65 72 73 0a | 61 72 65 20 64 65 73 63 |ameters.|are desc|
|00004ee0| 72 69 62 65 64 20 6d 6f | 72 65 20 66 75 6c 6c 79 |ribed mo|re fully|
|00004ef0| 20 69 6e 20 43 68 61 70 | 74 65 72 20 5c 72 65 66 | in Chap|ter \ref|
|00004f00| 7b 72 65 66 65 72 65 6e | 63 65 7d 2e 0a 0a 54 68 |{referen|ce}...Th|
|00004f10| 65 20 72 6f 75 74 69 6e | 65 20 5c 72 6f 75 7b 70 |e routin|e \rou{p|
|00004f20| 6c 73 69 64 65 33 7d 20 | 63 61 6e 20 62 65 20 75 |lside3} |can be u|
|00004f30| 73 65 64 20 74 6f 20 64 | 72 61 77 20 73 69 64 65 |sed to d|raw side|
|00004f40| 73 20 6f 6e 20 74 68 72 | 65 65 2d 64 69 6d 65 6e |s on thr|ee-dimen|
|00004f50| 73 69 6f 6e 61 6c 0a 70 | 6c 6f 74 73 20 74 6f 20 |sional.p|lots to |
|00004f60| 67 69 76 65 20 74 68 65 | 6d 20 61 20 6d 6f 72 65 |give the|m a more|
|00004f70| 20 73 6f 6c 69 64 20 6c | 6f 6f 6b 2e 20 20 47 72 | solid l|ook. Gr|
|00004f80| 69 64 20 6c 69 6e 65 73 | 20 70 65 72 70 65 6e 64 |id lines| perpend|
|00004f90| 69 63 75 6c 61 72 20 74 | 6f 20 74 68 65 0a 7a 20 |icular t|o the.z |
|00004fa0| 61 78 69 73 20 63 61 6e | 20 62 65 20 64 72 61 77 |axis can| be draw|
|00004fb0| 6e 20 77 69 74 68 20 74 | 68 65 20 72 6f 75 74 69 |n with t|he routi|
|00004fc0| 6e 65 20 5c 72 6f 75 7b | 70 6c 67 72 69 64 33 7d |ne \rou{|plgrid3}|
|00004fd0| 2e 0a 42 6f 74 68 20 72 | 6f 75 74 69 6e 65 73 20 |..Both r|outines |
|00004fe0| 61 72 65 20 64 65 63 72 | 69 62 65 64 20 69 6e 20 |are decr|ibed in |
|00004ff0| 43 68 61 70 74 65 72 7e | 5c 72 65 66 7b 72 65 66 |Chapter~|\ref{ref|
|00005000| 65 72 65 6e 63 65 7d 2e | 0a 0a 5c 73 65 63 74 69 |erence}.|..\secti|
|00005010| 6f 6e 20 7b 43 6f 6e 74 | 6f 75 72 20 50 6c 6f 74 |on {Cont|our Plot|
|00005020| 73 7d 5c 6c 61 62 65 6c | 7b 63 6f 6e 74 6f 75 72 |s}\label|{contour|
|00005030| 7d 0a 0a 41 20 72 6f 75 | 74 69 6e 65 20 69 73 20 |}..A rou|tine is |
|00005040| 61 76 61 69 6c 61 62 6c | 65 20 69 6e 20 50 4c 50 |availabl|e in PLP|
|00005050| 4c 4f 54 20 77 68 69 63 | 68 20 70 65 72 66 6f 72 |LOT whic|h perfor|
|00005060| 6d 73 20 61 20 63 6f 6e | 74 6f 75 72 20 70 6c 6f |ms a con|tour plo|
|00005070| 74 20 6f 66 20 64 61 74 | 61 20 0a 73 74 6f 72 65 |t of dat|a .store|
|00005080| 64 20 69 6e 20 61 20 74 | 77 6f 2d 64 69 6d 65 6e |d in a t|wo-dimen|
|00005090| 73 69 6f 6e 61 6c 20 61 | 72 72 61 79 2e 20 41 20 |sional a|rray. A |
|000050a0| 63 6f 6e 74 6f 75 72 20 | 66 6f 6c 6c 6f 77 69 6e |contour |followin|
|000050b0| 67 20 61 6c 67 6f 72 69 | 74 68 6d 20 69 73 0a 75 |g algori|thm is.u|
|000050c0| 73 65 64 2c 20 73 6f 20 | 74 68 61 74 20 69 74 20 |sed, so |that it |
|000050d0| 69 73 20 70 6f 73 73 69 | 62 6c 65 20 74 6f 20 75 |is possi|ble to u|
|000050e0| 73 65 20 6e 6f 6e 2d 63 | 6f 6e 74 69 6e 75 6f 75 |se non-c|ontinuou|
|000050f0| 73 20 6c 69 6e 65 20 73 | 74 79 6c 65 73 2e 0a 0a |s line s|tyles...|
|00005100| 54 68 65 20 72 6f 75 74 | 69 6e 65 20 5c 72 6f 75 |The rout|ine \rou|
|00005110| 7b 70 6c 63 6f 6e 74 7d | 20 68 61 73 20 74 68 65 |{plcont}| has the|
|00005120| 20 66 6f 72 6d 0a 5c 6e | 61 6d 65 7b 70 6c 63 6f | form.\n|ame{plco|
|00005130| 6e 74 28 7a 2c 6e 78 2c | 6e 79 2c 6b 78 2c 6c 78 |nt(z,nx,|ny,kx,lx|
|00005140| 2c 6b 79 2c 6c 79 2c 63 | 6c 65 76 65 6c 2c 6e 6c |,ky,ly,c|level,nl|
|00005150| 65 76 65 6c 2c 74 72 29 | 7d 0a 77 68 65 72 65 20 |evel,tr)|}.where |
|00005160| 7b 5c 74 74 20 7a 7d 20 | 69 73 20 74 68 65 20 74 |{\tt z} |is the t|
|00005170| 77 6f 2d 64 69 6d 65 6e | 73 69 6f 6e 61 6c 20 61 |wo-dimen|sional a|
|00005180| 72 72 61 79 20 6f 66 20 | 73 69 7a 65 20 24 7b 5c |rray of |size ${\|
|00005190| 74 74 20 6e 78 7d 5c 74 | 69 6d 65 73 7b 5c 74 74 |tt nx}\t|imes{\tt|
|000051a0| 20 6e 79 7d 24 0a 63 6f | 6e 74 61 69 6e 69 6e 67 | ny}$.co|ntaining|
|000051b0| 20 73 61 6d 70 6c 65 73 | 20 6f 66 20 74 68 65 20 | samples| of the |
|000051c0| 66 75 6e 63 74 69 6f 6e | 20 74 6f 20 62 65 20 63 |function| to be c|
|000051d0| 6f 6e 74 6f 75 72 65 64 | 2e 20 54 68 65 20 70 61 |ontoured|. The pa|
|000051e0| 72 61 6d 65 74 65 72 73 | 0a 7b 5c 74 74 20 6b 78 |rameters|.{\tt kx|
|000051f0| 7d 2c 20 7b 5c 74 74 20 | 6c 78 7d 2c 20 7b 5c 74 |}, {\tt |lx}, {\t|
|00005200| 74 20 6b 79 7d 20 61 6e | 64 20 7b 5c 74 74 20 6c |t ky} an|d {\tt l|
|00005210| 79 7d 20 73 70 65 63 69 | 66 79 20 74 68 65 20 70 |y} speci|fy the p|
|00005220| 6f 72 74 69 6f 6e 20 6f | 66 20 7b 5c 74 74 20 7a |ortion o|f {\tt z|
|00005230| 7d 0a 74 68 61 74 20 69 | 73 20 74 6f 20 62 65 20 |}.that i|s to be |
|00005240| 63 6f 6e 73 69 64 65 72 | 65 64 2e 20 54 68 65 20 |consider|ed. The |
|00005250| 61 72 72 61 79 20 7b 5c | 74 74 20 63 6c 65 76 65 |array {\|tt cleve|
|00005260| 6c 7d 20 6f 66 20 6c 65 | 6e 67 74 68 20 7b 5c 74 |l} of le|ngth {\t|
|00005270| 74 20 6e 6c 65 76 65 6c | 7d 0a 69 73 20 61 20 6c |t nlevel|}.is a l|
|00005280| 69 73 74 20 6f 66 20 74 | 68 65 20 64 65 73 69 72 |ist of t|he desir|
|00005290| 65 64 20 63 6f 6e 74 6f | 75 72 20 6c 65 76 65 6c |ed conto|ur level|
|000052a0| 73 2e 0a 0a 54 68 65 20 | 70 61 74 68 20 6f 66 20 |s...The |path of |
|000052b0| 65 61 63 68 20 63 6f 6e | 74 6f 75 72 20 69 73 20 |each con|tour is |
|000052c0| 69 6e 69 74 69 61 6c 6c | 79 20 63 6f 6d 70 75 74 |initiall|y comput|
|000052d0| 65 64 20 69 6e 20 74 65 | 72 6d 73 20 6f 66 20 74 |ed in te|rms of t|
|000052e0| 68 65 20 76 61 6c 75 65 | 73 20 6f 66 20 74 68 65 |he value|s of the|
|000052f0| 0a 61 72 72 61 79 20 69 | 6e 64 69 63 69 65 73 20 |.array i|ndicies |
|00005300| 77 68 69 63 68 20 72 61 | 6e 67 65 20 66 72 6f 6d |which ra|nge from|
|00005310| 20 31 20 74 6f 20 7b 5c | 74 74 20 6e 78 7d 20 69 | 1 to {\|tt nx} i|
|00005320| 6e 20 74 68 65 20 66 69 | 72 73 74 20 69 6e 64 65 |n the fi|rst inde|
|00005330| 78 20 61 6e 64 20 66 72 | 6f 6d 0a 31 20 74 6f 20 |x and fr|om.1 to |
|00005340| 7b 5c 74 74 20 6e 79 7d | 20 69 6e 20 74 68 65 20 |{\tt ny}| in the |
|00005350| 73 65 63 6f 6e 64 20 69 | 6e 64 65 78 2e 20 42 65 |second i|ndex. Be|
|00005360| 66 6f 72 65 20 74 68 65 | 73 65 20 63 61 6e 20 62 |fore the|se can b|
|00005370| 65 20 64 72 61 77 6e 20 | 69 6e 20 74 68 65 20 63 |e drawn |in the c|
|00005380| 75 72 72 65 6e 74 0a 77 | 69 6e 64 6f 77 20 28 73 |urrent.w|indow (s|
|00005390| 65 65 20 70 61 67 65 20 | 5c 70 61 67 65 72 65 66 |ee page |\pageref|
|000053a0| 7b 77 69 6e 64 6f 77 7d | 20 69 6e 20 53 65 63 74 |{window}| in Sect|
|000053b0| 69 6f 6e 20 5c 72 65 66 | 7b 77 69 6e 64 6f 77 7d |ion \ref|{window}|
|000053c0| 29 2c 20 69 74 20 69 73 | 20 6e 65 63 65 73 73 61 |), it is| necessa|
|000053d0| 72 79 20 74 6f 0a 63 6f | 6e 76 65 72 74 20 66 72 |ry to.co|nvert fr|
|000053e0| 6f 6d 20 74 68 65 73 65 | 20 61 72 72 61 79 20 69 |om these| array i|
|000053f0| 6e 64 69 63 69 65 73 20 | 69 6e 74 6f 20 77 6f 72 |ndicies |into wor|
|00005400| 6c 64 20 63 6f 6f 72 64 | 69 6e 61 74 65 73 2e 20 |ld coord|inates. |
|00005410| 54 68 69 73 20 69 73 20 | 64 6f 6e 65 20 62 79 0a |This is |done by.|
|00005420| 70 61 73 73 69 6e 67 20 | 61 20 70 6f 69 6e 74 65 |passing |a pointe|
|00005430| 72 20 74 6f 20 61 20 75 | 73 65 72 2d 64 65 66 69 |r to a u|ser-defi|
|00005440| 6e 65 64 20 66 75 6e 63 | 74 69 6f 6e 20 74 6f 20 |ned func|tion to |
|00005450| 7b 5c 74 74 20 70 6c 63 | 6f 6e 74 7d 2e 20 20 54 |{\tt plc|ont}. T|
|00005460| 68 69 73 0a 66 75 6e 63 | 74 69 6f 6e 20 70 6f 69 |his.func|tion poi|
|00005470| 6e 74 65 72 20 69 73 20 | 74 68 65 20 6c 61 73 74 |nter is |the last|
|00005480| 20 61 72 67 75 6d 65 6e | 74 20 7b 5c 74 74 20 74 | argumen|t {\tt t|
|00005490| 72 7d 2e 0a 54 68 69 73 | 20 66 75 6e 63 74 69 6f |r}..This| functio|
|000054a0| 6e 20 6d 75 73 74 20 62 | 65 20 64 65 63 6c 61 72 |n must b|e declar|
|000054b0| 65 64 20 61 73 20 74 79 | 70 65 20 7b 5c 74 74 20 |ed as ty|pe {\tt |
|000054c0| 76 6f 69 64 7d 20 69 6e | 20 74 68 65 0a 6d 6f 64 |void} in| the.mod|
|000054d0| 75 6c 65 20 77 68 69 63 | 68 20 63 61 6c 6c 73 20 |ule whic|h calls |
|000054e0| 7b 5c 74 74 20 70 6c 63 | 6f 6e 74 7d 2e 20 54 68 |{\tt plc|ont}. Th|
|000054f0| 69 73 20 74 72 61 6e 73 | 66 6f 72 6d 61 74 69 6f |is trans|formatio|
|00005500| 6e 20 66 75 6e 63 74 69 | 6f 6e 0a 6d 75 73 74 20 |n functi|on.must |
|00005510| 68 61 76 65 20 74 68 65 | 20 70 61 72 61 6d 65 74 |have the| paramet|
|00005520| 65 72 20 6c 69 73 74 0a | 5c 6e 61 6d 65 7b 76 6f |er list.|\name{vo|
|00005530| 69 64 20 74 72 28 78 2c | 79 2c 74 78 2c 74 79 29 |id tr(x,|y,tx,ty)|
|00005540| 3b 7d 0a 77 68 65 72 65 | 20 7b 5c 74 74 20 28 78 |;}.where| {\tt (x|
|00005550| 2c 79 29 7d 0a 69 73 20 | 74 68 65 20 70 6f 69 6e |,y)}.is |the poin|
|00005560| 74 20 74 68 72 6f 75 67 | 68 20 77 68 69 63 68 20 |t throug|h which |
|00005570| 74 68 65 20 63 6f 6e 74 | 6f 75 72 20 72 75 6e 73 |the cont|our runs|
|00005580| 20 65 78 70 72 65 73 73 | 65 64 20 69 6e 0a 74 65 | express|ed in.te|
|00005590| 72 6d 73 20 6f 66 20 61 | 72 72 61 79 20 69 6e 64 |rms of a|rray ind|
|000055a0| 69 63 69 65 73 2c 20 61 | 6e 64 20 7b 5c 74 74 20 |icies, a|nd {\tt |
|000055b0| 28 74 78 2c 74 79 29 7d | 20 61 72 65 20 70 6f 69 |(tx,ty)}| are poi|
|000055c0| 6e 74 65 72 73 20 74 6f | 20 66 6c 6f 61 74 20 76 |nters to| float v|
|000055d0| 61 72 69 61 62 6c 65 73 | 0a 77 68 69 63 68 20 61 |ariables|.which a|
|000055e0| 72 65 20 74 68 65 20 77 | 6f 72 6c 64 20 63 6f 6f |re the w|orld coo|
|000055f0| 72 64 69 6e 61 74 65 73 | 20 6f 66 0a 74 68 65 20 |rdinates| of.the |
|00005600| 70 6f 69 6e 74 20 77 68 | 69 63 68 20 63 6f 72 72 |point wh|ich corr|
|00005610| 65 73 70 6f 6e 64 73 20 | 74 6f 20 74 68 65 73 65 |esponds |to these|
|00005620| 20 69 6e 64 69 63 69 65 | 73 2e 0a 0a 4f 66 74 65 | indicie|s...Ofte|
|00005630| 6e 2c 20 74 68 65 20 74 | 72 61 6e 73 66 6f 72 6d |n, the t|ransform|
|00005640| 61 74 69 6f 6e 20 62 65 | 74 77 65 65 6e 20 61 72 |ation be|tween ar|
|00005650| 72 61 79 20 69 6e 64 69 | 63 69 65 73 20 61 6e 64 |ray indi|cies and|
|00005660| 20 77 6f 72 6c 64 20 63 | 6f 6f 72 64 69 6e 61 74 | world c|oordinat|
|00005670| 65 73 20 63 61 6e 0a 62 | 65 20 65 78 70 72 65 73 |es can.b|e expres|
|00005680| 73 65 64 20 61 73 20 61 | 20 6c 69 6e 65 61 72 20 |sed as a| linear |
|00005690| 74 72 61 6e 73 66 6f 72 | 6d 61 74 69 6f 6e 2e 20 |transfor|mation. |
|000056a0| 41 20 72 6f 75 74 69 6e | 65 20 69 73 20 70 72 6f |A routin|e is pro|
|000056b0| 76 69 64 65 64 20 77 69 | 74 68 69 6e 20 74 68 65 |vided wi|thin the|
|000056c0| 0a 6c 69 62 72 61 72 79 | 20 77 68 69 63 68 20 63 |.library| which c|
|000056d0| 61 6e 20 62 65 20 70 61 | 73 73 65 64 20 74 6f 20 |an be pa|ssed to |
|000056e0| 7b 5c 74 74 20 70 6c 63 | 6f 6e 74 7d 20 61 73 20 |{\tt plc|ont} as |
|000056f0| 74 68 65 20 70 61 72 61 | 6d 65 74 65 72 20 7b 5c |the para|meter {\|
|00005700| 74 74 20 74 72 7d 2e 20 | 54 68 69 73 0a 74 72 61 |tt tr}. |This.tra|
|00005710| 6e 73 66 6f 72 6d 61 74 | 69 6f 6e 20 72 6f 75 74 |nsformat|ion rout|
|00005720| 69 6e 65 20 69 73 20 61 | 73 20 66 6f 6c 6c 6f 77 |ine is a|s follow|
|00005730| 73 3a 0a 5c 62 65 67 69 | 6e 7b 76 65 72 62 61 74 |s:.\begi|n{verbat|
|00005740| 69 6d 7d 0a 0a 23 69 6e | 63 6c 75 64 65 20 22 70 |im}..#in|clude "p|
|00005750| 6c 70 6c 6f 74 2e 68 22 | 0a 0a 76 6f 69 64 20 78 |lplot.h"|..void x|
|00005760| 66 6f 72 6d 28 78 2c 79 | 2c 74 78 2c 74 79 29 0a |form(x,y|,tx,ty).|
|00005770| 66 6c 6f 61 74 20 78 2c | 20 79 2c 20 2a 74 78 2c |float x,| y, *tx,|
|00005780| 20 2a 74 79 3b 0a 7b 0a | 20 20 20 20 20 20 65 78 | *ty;.{.| ex|
|00005790| 74 65 72 6e 20 66 6c 6f | 61 74 20 74 72 5b 5d 3b |tern flo|at tr[];|
|000057a0| 0a 0a 20 20 20 20 20 20 | 2a 74 78 20 3d 20 74 72 |.. |*tx = tr|
|000057b0| 5b 30 5d 2a 78 20 2b 20 | 74 72 5b 31 5d 2a 79 20 |[0]*x + |tr[1]*y |
|000057c0| 2b 20 74 72 5b 32 5d 3b | 0a 20 20 20 20 20 20 2a |+ tr[2];|. *|
|000057d0| 74 79 20 3d 20 74 72 5b | 33 5d 2a 78 20 2b 20 74 |ty = tr[|3]*x + t|
|000057e0| 72 5b 34 5d 2a 79 20 2b | 20 74 72 5b 35 5d 3b 0a |r[4]*y +| tr[5];.|
|000057f0| 7d 0a 5c 65 6e 64 7b 76 | 65 72 62 61 74 69 6d 7d |}.\end{v|erbatim}|
|00005800| 0a 54 68 75 73 20 62 79 | 20 73 65 74 74 69 6e 67 |.Thus by| setting|
|00005810| 20 75 70 20 74 68 65 20 | 76 61 6c 75 65 73 20 69 | up the |values i|
|00005820| 6e 20 74 68 65 20 61 72 | 72 61 79 20 7b 5c 74 74 |n the ar|ray {\tt|
|00005830| 20 74 72 5b 5d 7d 2c 20 | 77 65 20 63 61 6e 0a 61 | tr[]}, |we can.a|
|00005840| 70 70 6c 79 20 61 6e 20 | 61 72 62 69 74 72 61 72 |pply an |arbitrar|
|00005850| 79 20 74 72 61 6e 73 6c | 61 74 69 6f 6e 2c 20 72 |y transl|ation, r|
|00005860| 6f 74 61 74 69 6f 6e 20 | 61 6e 64 2f 6f 72 20 73 |otation |and/or s|
|00005870| 68 65 61 72 20 74 6f 20 | 74 68 65 20 61 72 72 61 |hear to |the arra|
|00005880| 79 20 62 65 66 6f 72 65 | 0a 64 72 61 77 69 6e 67 |y before|.drawing|
|00005890| 20 6f 75 74 20 74 68 65 | 20 63 6f 6e 74 6f 75 72 | out the| contour|
|000058a0| 73 2e 20 42 79 20 64 65 | 66 69 6e 69 6e 67 20 6f |s. By de|fining o|
|000058b0| 74 68 65 72 20 74 72 61 | 6e 73 66 6f 72 6d 61 74 |ther tra|nsformat|
|000058c0| 69 6f 6e 20 73 75 62 72 | 6f 75 74 69 6e 65 73 2c |ion subr|outines,|
|000058d0| 0a 69 74 20 69 73 20 70 | 6f 73 73 69 62 6c 65 20 |.it is p|ossible |
|000058e0| 74 6f 20 64 72 61 77 20 | 63 6f 6e 74 6f 75 72 73 |to draw |contours|
|000058f0| 20 77 72 61 70 70 65 64 | 20 61 72 6f 75 6e 64 20 | wrapped| around |
|00005900| 70 6f 6c 61 72 20 67 72 | 69 64 73 20 65 74 63 2e |polar gr|ids etc.|
|00005910| 0a 0a 41 73 20 61 6e 20 | 65 78 61 6d 70 6c 65 20 |..As an |example |
|00005920| 69 6e 20 73 65 74 74 69 | 6e 67 20 75 70 20 7b 5c |in setti|ng up {\|
|00005930| 74 74 20 74 72 5b 5d 7d | 2c 20 73 75 70 70 6f 73 |tt tr[]}|, suppos|
|00005940| 65 20 74 68 61 74 20 74 | 68 65 20 61 72 72 61 79 |e that t|he array|
|00005950| 20 7b 5c 74 74 20 7a 7d | 20 0a 69 73 20 6f 66 20 | {\tt z}| .is of |
|00005960| 73 69 7a 65 20 24 32 31 | 20 5c 74 69 6d 65 73 20 |size $21| \times |
|00005970| 34 31 24 20 61 6e 64 20 | 63 6f 6e 74 61 69 6e 73 |41$ and |contains|
|00005980| 20 74 68 65 20 76 61 6c | 75 65 73 20 6f 66 20 74 | the val|ues of t|
|00005990| 68 65 20 66 75 6e 63 74 | 69 6f 6e 20 0a 24 7a 5b |he funct|ion .$z[|
|000059a0| 78 5d 5b 79 5d 24 2c 0a | 77 68 65 72 65 20 24 78 |x][y]$,.|where $x|
|000059b0| 24 20 72 61 6e 67 65 73 | 20 66 72 6f 6d 20 30 2e |$ ranges| from 0.|
|000059c0| 30 20 74 6f 20 34 2e 30 | 20 61 6e 64 20 24 79 24 |0 to 4.0| and $y$|
|000059d0| 20 72 61 6e 67 65 73 20 | 66 72 6f 6d 20 2d 38 2e | ranges |from -8.|
|000059e0| 30 20 74 6f 20 38 2e 30 | 2e 20 0a 46 75 72 74 68 |0 to 8.0|. .Furth|
|000059f0| 65 72 6d 6f 72 65 2c 0a | 6c 65 74 20 75 73 20 61 |ermore,.|let us a|
|00005a00| 6c 73 6f 20 73 75 70 70 | 6f 73 65 20 74 68 61 74 |lso supp|ose that|
|00005a10| 20 74 68 65 20 77 69 6e | 64 6f 77 20 28 61 73 20 | the win|dow (as |
|00005a20| 64 65 66 69 6e 65 64 20 | 75 73 69 6e 67 20 7b 5c |defined |using {\|
|00005a30| 74 74 20 70 6c 65 6e 76 | 7d 20 6f 72 0a 7b 5c 74 |tt plenv|} or.{\t|
|00005a40| 74 20 70 6c 77 69 6e 64 | 7d 29 20 63 6f 76 65 72 |t plwind|}) cover|
|00005a50| 73 20 74 68 69 73 20 72 | 61 6e 67 65 20 6f 66 20 |s this r|ange of |
|00005a60| 77 6f 72 6c 64 20 63 6f | 6f 72 64 69 6e 61 74 65 |world co|ordinate|
|00005a70| 73 2e 20 0a 53 69 6e 63 | 65 20 77 65 20 77 69 73 |s. .Sinc|e we wis|
|00005a80| 68 20 74 68 65 20 69 6e | 64 65 78 0a 28 31 2c 31 |h the in|dex.(1,1|
|00005a90| 29 20 69 6e 20 61 72 72 | 61 79 20 7b 5c 74 74 20 |) in arr|ay {\tt |
|00005aa0| 7a 7d 20 74 6f 20 6d 61 | 70 20 74 6f 20 28 30 2e |z} to ma|p to (0.|
|00005ab0| 30 2c 2d 38 2e 30 29 20 | 61 6e 64 20 74 68 65 20 |0,-8.0) |and the |
|00005ac0| 69 6e 64 65 78 20 28 32 | 31 2c 34 31 29 20 74 6f |index (2|1,41) to|
|00005ad0| 20 6d 61 70 0a 74 6f 20 | 28 34 2e 30 2c 38 2e 30 | map.to |(4.0,8.0|
|00005ae0| 29 2c 20 61 6e 64 20 66 | 6f 72 20 74 68 65 72 65 |), and f|or there|
|00005af0| 20 74 6f 20 62 65 20 6e | 6f 20 73 6b 65 77 20 69 | to be n|o skew i|
|00005b00| 6e 20 74 68 65 20 61 78 | 65 73 2c 20 77 65 20 73 |n the ax|es, we s|
|00005b10| 68 6f 75 6c 64 20 63 68 | 6f 6f 73 65 0a 65 6c 65 |hould ch|oose.ele|
|00005b20| 6d 65 6e 74 73 20 6f 66 | 20 7b 5c 74 74 20 74 72 |ments of| {\tt tr|
|00005b30| 5b 5d 7d 20 73 6f 20 74 | 68 61 74 0a 5c 5b 0a 20 |[]} so t|hat.\[. |
|00005b40| 20 20 5c 62 65 67 69 6e | 7b 61 72 72 61 79 7d 7b | \begin|{array}{|
|00005b50| 6c 40 7b 5c 3b 3d 5c 3b | 7d 6c 7d 0a 20 20 20 74 |l@{\;=\;|}l}. t|
|00005b60| 78 20 26 20 30 2e 32 78 | 20 2d 20 30 2e 32 20 5c |x & 0.2x| - 0.2 \|
|00005b70| 5c 0a 20 20 20 74 79 20 | 26 20 30 2e 34 79 20 2d |\. ty |& 0.4y -|
|00005b80| 20 38 2e 34 0a 20 20 20 | 5c 65 6e 64 7b 61 72 72 | 8.4. |\end{arr|
|00005b90| 61 79 7d 0a 5c 5d 0a 61 | 6e 64 20 73 6f 20 7b 5c |ay}.\].a|nd so {\|
|00005ba0| 74 74 20 74 72 5b 30 5d | 3d 30 2e 32 7d 2c 20 7b |tt tr[0]|=0.2}, {|
|00005bb0| 5c 74 74 20 74 72 5b 31 | 5d 3d 30 2e 30 7d 2c 20 |\tt tr[1|]=0.0}, |
|00005bc0| 7b 5c 74 74 20 74 72 5b | 32 5d 3d 2d 30 2e 32 7d |{\tt tr[|2]=-0.2}|
|00005bd0| 2c 0a 7b 5c 74 74 20 74 | 72 5b 33 5d 3d 30 2e 30 |,.{\tt t|r[3]=0.0|
|00005be0| 7d 2c 20 7b 5c 74 74 20 | 74 72 5b 34 5d 3d 30 2e |}, {\tt |tr[4]=0.|
|00005bf0| 34 7d 2c 20 7b 5c 74 74 | 20 74 72 5b 35 5d 3d 2d |4}, {\tt| tr[5]=-|
|00005c00| 38 2e 34 7d 2e 0a 0a | |8.4}... | |
+--------+-------------------------+-------------------------+--------+--------+