NetNews Usenet Archive 1992 #27/NN_1992_27.iso/spool/comp/graphics/gnuplot/438

Text File | 1992-11-23 | 8.9 KB | 248 lines

x-gateway: rodan.UU.NET from info-gnuplot to comp.graphics.gnuplot; Mon, 23 Nov 1992 11:32:39 EST
Date: Mon, 23 Nov 1992 08:14:55 PST
From: [e-mail] (Alex Woo x6010 227-6 rm 315)
Message-ID: <[e-mail]>
Subject: test message: contrib
Newsgroups: comp.graphics.gnuplot
Path: sparky!uunet!wendy-fate.uu.net!info-gnuplot
Sender: [e-mail]
Lines: 237

--------bryne subdirectory ---cut-here----------------cut-here----------
Date: Thu, 26 Mar 92 16:12:06 -0500
From: "Margaret R. Byrne" <[e-mail]>
Subject: congp3d3 preprocessor to draw contour plots on irregular regions.
I have tested my preprocessor's output files only under gnuplot 3.0
under DOS.

I have only used the preprocessor itself under watfor77 and watfor87.

Rose Byrne
([e-mail]) <---- sporadic access
--------clark subdirectory -------------------------------------------

Date: Sat, 18 Jan 92 12:53:26 MST
From: Michael Clark <pixar!sun!prony.Colorado.EDU![e-mail]>
Subject: data filtering

If I used many samples to describe the curve, the symbols were
too closely spaced.  When I used fewer samples, the curves lost their
smoothness (as expected).  What I really needed was a way to plot every
n^th point so that I could get I smooth curve without tons of symbols.  So,
Instead of just having two params following the style param, there are now
4:

1: line_type
2: point_type
3: point_skip   - gives the number of data samples per plotted point
4: point_offs   - gives the sample number on which to plot the first point

Thus points are plotted only for the samples n satisfying
        n = point_skip*i + point_offs
for some non-negative integer i.

[This was not included because it was felt that the line points
options needed to be entirely redone.]
--------hanna subdirectory-----------------------------------------

Date: Tue, 7 Apr 92 21:34:46 PDT
From: [e-mail] (gregg hanna)
Subject: x11-library mode

The 'xlib' mode provides functionality similar to the 'xpm' terminal
mode I sent earlier.  The 'xlib' mode is *much* faster, the disk
files are smaller, and plots are re-sizable.  The only advantage
of the 'xpm' mode is that XPM format files are more transportable.
This would seems to be less important since there is a ppm terminal
mode.

Included are new files which provide a
new terminal type called 'xlib' (for x11-library mode).  The xlib
is like the x11 mode modified so that the commands previously
sent to the gnuplot_x11 driver are instead put into the output
file.  In addition, the gnuplot_x11.c file has been rewritten to
be a callable function, which will read a xlib file and draw the
described graph in a drawable.

The following files are included:

    xlib.trm - A copy of x11.trm, modified to use the
        normal output file instead of a pipe.

    gnulib_x11.c - A rather severe rewrite of gnuplot_x11.c,
        as well as a few functions used to interface
        into the user code.

    gnulib_x11.h - Specs for user callable routines.

    xlibtest.c - a test program written in Motif, it will
        run gnuplot and build a xlib output file, then
        plot that on the screen.  Resizing the window
        will redraw the plot, scaled appropriately,
        without re-running gnuplot.

    xlibtest.demo - the gnuplot command to draw the test plot.

    makefile.xlib - minimal make file for the xlibtest program

To get full use out of the xlib mode, the file gnulib_x11.c needs
to be covered by the alternate GPL for libraries, since the gnulib.o
file must be linked into the user's executable.  Until that is
the case, I will (of course) treat the file as covered by the GPL,
meaning that I cannot include the gnulib_x11 drawing routines in my
software.

                                         gregg hanna
                                         [e-mail]

--------yamamoto subdirectory -----------------------------------------

Date: 18 Mar 92 18:25:00 GMT+9:00
From: "NOBORU YAMAMOTO     " <sun!kekvax.kek.jp![e-mail]>
Subject: Re: gnuplot on Apple Macintosh

     Here I enclose "diff -c" patch for gnuplot 3.0 on Mac. you also need
TC-console.c and TC_console.h files , which I will send in separate e-mail.
The graphics.c file is too big for THINK-C compiler. I forced to divide it into
two part.

    Hope it help someone in the world.

    Noboru Yamamoto

--------russo subdirectory -----------------------------------------
Date: Fri, 6 Dec 91 16:45:38 -0500
From: pixar!uupsi!rudedog.nrl.navy.mil![e-mail] (Kevin Russo)
Subject: gnuplotio bidirectional pipe library

November 1991

G N U P L O T I O

Gnuplotio is a C-function interface library which allows an
application program to run Gnuplot interactively over UNIX pipes.
Possible uses include using gnuplot as a cheap graphics library.
By passing it data files and plot commands an application can have
graphics without writing any graphics code.

If gnuplot has the "table" terminal type,
then Gnuplotio turns Gnuplot into a poor man's expression evaluator.



Written by Kevin Russo   SFA, Inc/Naval Research Lab, Code 5133   March 1991
[e-mail] or [e-mail]

--------woo subdirectory -----------------------------------------

Date: Thu, 26 Mar 91 16:12:06 -0500
From: "Alex Woo" <[e-mail]>
Subject: two additional title lines and fixes to errorbar style


These mods add two features:

1.  Two additional title lines called top_title and bottom_title.
These behave just like "title."  It's not elegant but it solve
95% of the lack of labels problem.  This mod was rejected in
favor of some future multiline title scheme.

2.  Adds an errorbar style and removes the order restriction
for errorbars.  This is primary useful for financial data
and an example of T-Bond futures prices is included.
[These mods were rejected in favor of a future rewrite of lines
point options.]

--------green subdirectory -----------------------------------------
Date: Mon, 17 Aug 92 16:31:19 -0400
From: Roque Donizete de Oliveira <[e-mail]>
Subject: Re:  greek symbols in gnuplot

I include Martin Green's postscript macros for
font mixing at the end of this message. It might
be a good a idea to try to contact him to see if
there is a newer version (perhaps easier to use and
more similar to LaTeX usage, like using _ and ^).

I'm not sure what is best way of solving this problem.
One could define in the gnudict prologue things like

 /\alpha {/Symbol findfont 200 scalefont setfont (a) } def

so that one could say (in gnuplot)

                      set x label  "\alpha"

and get in the postscript file something like

                      100 100 moveto \alpha show


Now the Symbol font is active and something has to
be done to get back the default font and font size
(one could put everything with a gsave/grestore pair
but then one would have to account for the stringwidth
if doing mixed font stuff). And this doesn't even
include subscripting/superscripting yet.

% Text manipulation functions including super- and sub-scripts,
% multiple fonts and sizes, centering and right alignment, and
% full justification.
%
% Example:
%
%   [string1 sups [string2 string3 subs string4] {font2} string5] display
%
% should print string1 with the current font, then go into superscript
% mode for string2 and string3, then print string4 as a subscript to
% string3, then return to the original font, followed by a change to font2,
% and finally print string5.  The positioning and angle of the printed
% text are determined by the /textalign and /textangle variables.
%
% Font selection: To select Times-Roman 12 point font use: 12 R
%
% Additional notes & changes (C. Towne):
%
% 1.  In the above example, to change fonts in the middle of a display,
%     but keep the same point size, do something like:
%
%        [string1 sups [string2 string3 subs [string4]] {PS S} string5] display
%
% 2.  To change fonts in the middle of a display, and change the point size,
%     do:
%
%        [string1 sups [string2 string3 subs [string4]] {nn S} string5] display
%
%     where nn is the desired point size.
%
% 3.  To change fonts for a subscript (or superscript) from, say, Helvetica
%     to Symbol, do:
%
%        [string1 sups [string2 string3 subs [{PS S}string4{PS H}]] string5]
%        display
%
% 4.  gsave & grestore added to displaywidth procedure.  Without it
%     entire string would be displayed in last font used.
%
% 5.  The /textangle option apparently is missing.
%
% 6.  Stuff for centered symbols has been removed.
%
% 7.  Procedures displaybbox and displaybbox2 (similar to displaywidth and
%     displaywidth2) added.
%
% 8.  Font names changed to same as those in troff, and added CB, CO, CD.
%
% 9.  Coding style changes made.
%
% From USENET posting in comp.lang.postscript by:
% Martin Green                        UUCP     :  ..!torsqnt!ohrd!green
% Ontario Hydro Research Division     Telephone:  [phone] Ext7060
% 800 Kipling Ave
% Toronto, Ontario, CANADA, M8Z5S4
%
% Copyright (C) 1990 Martin A. Green
%
% Last edited: Fri Nov  2 09:09:22 EST 1990
%