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- GPP(1) USER COMMANDS GPP(1)
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- NAME
- gpp - a program for plotting graphs
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- SYNOPSIS
- gpp [ -l<d> ] [ -s <s1> <s2> ] [ -r<fact> ] [ -S ] [ -P ]
- [ -G ] [ -c ] [ -m<n> ] [ -w<n> ] [ -g ] [ -p<n> ] [ -L ]
- [ -x xmin xmax ] [ -y ymin ymax ] [ -X ] [ -Y ] [ -Mx<n> ]
- [ -My<n> ] [ -f<fontname> ] [ -d<device> ] file or -
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- DESCRIPTION
- This program displays multiple graphs with various curve
- fitting and axis options. The following options are avail-
- able:
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- -l<d>
- Perform a least square fit of degree "d" on each curve.
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- -s <s1> <s2>
- Perform a cubic spline fit on each curve, with end
- slopes s1 and s2 (Ie. a clamped spline)
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- -r <fact>
- Reduce (if fact < 1.0) or enlarge (if fact > 1.0) the
- entire plot.
-
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- -S Perform a cubic spline fit on each curve using a cardi-
- nal spline and the VOGLE(3) routine curve(). The end
- slopes are calculated as the tangent to the curve
- formed by the lines connecting the first and second
- points and the last and next to last points.
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- -P Perform a power equation fit on each curve.
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- -G Perform a saturated growth rate fit on each curve.
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- -m<n>
- Place a marker at every "n"th data point on each curve.
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- -g<n>
- Place a grid over the graph, with grid spacing of every
- nth tickmark.
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- VOPL 1.2 Last change: 07 October. 1993 1
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- GPP(1) USER COMMANDS GPP(1)
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- -p<n>
- Draws only markers at every <n>th data point
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- -L Print legends if they are provided.
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- -x xmin xmax
- Specify absolute x scaling values. This option by-
- passes the auto-scaling of the x-axis values.
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- -y ymin ymax
- Specify absolute y scaling values. This option by-
- passes the auto-scaling of the y-axis values.
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- -X Draw the X-axis using a logarithmic scale.
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- -Y Draw the Y-axis using a logarithmic scale.
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- -Mx<n>
- Sets the number of minor tickmarks between (and includ-
- ing) major tickmarks along the X axis.
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- -My<n>
- Sets the number of minor tickmarks between (and includ-
- ing) major tickmarks along the Y axis.
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- -f<fontname>
- Use font name fontname where fontname is any font
- available in the VOGLE(3) library.
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- -d<device>
- Use the output device "device". These are the devices
- compiled into the VOGLE(3) library. Some examples are:
- postscript, hpgl, tek, sun etc.
-
-
- file The name of the input file. If it is a minus '-' stdin
- is assumed.
-
- The input file contains two lines at the type which describe
- the graph. The first line gives the title, and the second
- line the type. At the moment the only type supported is
- "xy". The axes titles appropriate to the type of the graph
- are on the lines following the type statement. After the
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- VOPL 1.2 Last change: 07 October. 1993 2
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- GPP(1) USER COMMANDS GPP(1)
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- axes titles the first legend title is given followed by an
- axes descriptor on the next line. gpp then reads in points
- appropriate to the axes descriptor until it reaches a plot
- statement. This tells it to save the current points as a
- seperate plot. It then looks for another legend followed by
- an axes statement, and the cycle continues. Legends and
- titles may be blank lines.
-
- A title for the graph
- type xy
- A title for the x-axis
- A title for the y-axis
- legend for the first plot
- axes xy
- x y
- x y
- . .
- . .
- plot xy
- legend for the second plot
- axes x
- x
- x
- .
- .
- plot xy
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-
- FILES
- /usr/local/lib/hershey/* Font files.
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- SEE ALSO
- VOGLE(3), VOPL(3).
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- BUGS
- There are too many options. There may be only 1024 points
- per trace. Interpretation of Endslopes for splines when
- using logarithmic scalings is Sketchy.
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- VOPL 1.2 Last change: 07 October. 1993 3
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