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<html><head><title>SciPlot Widget Demo Program</title></head><body>
<h1><a name="top">SciPlot Demo Program</a></h1>
<ul>
<li><a href="#comp">Compilation Instructions</a>
<li><a href="#sciplot">x/y plotter</a>
<ul>
<li><a href="#screen">Screen Shots</a>
<li><a href="#usage">Usage</a>
<li><a href="#data">Input File Format</a>
<li><a href="#sample">Sample Input File</a>
</ul>
<li><a href="#realtime">Realtime Demo</a>
<ul>
<li><a href="#realtime_usage">Usage</a>
</ul>
</ul>
<ul>
<li>
<a href="SciPlot.html">SciPlot General Info</a>
<li>
<a href="SciPlotProg.html">Programmer's Documentation</a>
</ul>
<p><hr><h2><a name="comp">Compilation Instructions</a></h2>
<p>Shipped with the source code distribution are two demo programs
that show some of the features of the SciPlot widget. <b>NOTE! The demo
programs require Motif, but the SciPlot widget itself does not.</b>
<p>If you have the program imake installed, you may use the supplied Imakefile
to generate a Makefile. Otherwise, copy the file Makefile.noImake to Makefile,
and edit that to conform to your system. Actually, other than specifying the
C compiler to use, the Makefile should require little customization.
<p>To generate the Makefile, type:
<p><code>xmkmf</code>
<p>To compile both demo programs, type:
<p><code>make</code>
<p><hr><h2><a name="sciplot">x/y plotter</a></h2>
<p>The SciPlot Demo program takes a text file (or standard input) as input
and plots the data from that file as x/y or polar plots. More than one
set of x/y (polar) line data may appear in a single plot frame, and more
than one plot frame may be displayed on the screen. As shown in the
<a href="#screen">plot frame controls</a>
, many features of the SciPlot widget are available for customization before
generating a postscript copy.
<h3><a name="screen">Screen Shots</a></h3>
<img src=SciPlotDemo.gif alt="[Picture of demo frame]">
<h3><a name="usage">Usage</a></h3>
<p>The SciPlot Demo program is made automatically when compiling the SciPlot
Widget source code, as shipped. It is called "sciplot" and is executed by
typing:
<p><code>sciplot data.txt</code>
<p>where data.txt is a sciplot input file, described below. Note that sciplot
can also read multiple input files on the same command line, or read from
standard input.
<h3><a name="data">Input File Format</a></h3>
<p>There are 5 commands that sciplot recognizes in the input file. Optional
items are enclosed in [square brackets].
<dl>
<dt>Title [title]
<dd>Signifies the start of a new plot, and optionally specifies the title
for the plot.
<dt>Xaxis [x axis label]
<dd>Optional x axis label
<dt>Yaxis [y axis label]
<dd>Optional y axis label
<dt>Polar [rad]
<dd>Polar plot flag. If not present, the form is assumed to be a cartesian
(x/y) plot.
<dt>Line legend-label
<dd>Begins a new line of data to be added to the current plot. The values
to be added immediately follow this line in the input file; and the program
will continue to add lines until another command is reached, or the file ends.
<p>Data is free format, but must be separated by a comma, equal sign, or
whitespace. Both the x and y (r and theta) coordinates must appear on the
same line of text in the file.
<p>In place of a line of x/y data, the keyword "skip" may be substituted.
This causes a break in the current line, which allows lines to contain
multiple disjointed line segments.
</dl>
<p>Any text labels in the file should be enclosed in quotation characters.
<h3><a name="sample">Sample Input File</a></h3>
<pre>
Title="Crack Growth Comparison"
Xaxis="Number of Cycles (kc)"
Yaxis="Crack Depth (mm)"
Line="25% strain"
0.000000e+00 2.000000e+00
1.373497e+02 2.500000e+00
2.403780e+02 3.000000e+00
skip
3.205736e+02 3.500000e+00
3.845680e+02 4.000000e+00
Line="50% strain"
0.000000e+00 2.000000e+00
3.480081e+01 2.500000e+00
6.082956e+01 3.000000e+00
skip
8.105608e+01 3.500000e+00
9.719518e+01 4.000000e+00
Line="100% strain"
0.000000e+00 2.000000e+00
4.212263e+00 2.500000e+00
6.219232e+00 3.000000e+00
7.458972e+00 3.500000e+00
8.387889e+00 4.000000e+00
</pre>
<p><hr><h2><a name="realtime">Realtime Demo</a></h2>
<p>This is just a simple program that uses the realtime updating capabilities
of the widget. Instituted in the program is a timed callback
(XtAppAddTimeOut) that simply randomly increments one of the points every
half second. The plot is redrawn after every update.
<h3><a name="realtime_usage">Usage</a></h3>
<p>Just execute the program "realtime" to see this demo.
It takes no arguments.
<hr>
<br> <a href=SciPlot.html>SciPlot</a> :
<a href=SciPlotProg.html>Programmer's Reference</a> |
<a href=SciPlotDemo.html>Demo Programs</a>
<br> <a href=ListTree.html>ListTree</a> :
<a href=ListTreeProg.html>Programmer's Reference</a>
<br><hr>Web Page Design by <a href="http://www.ae.utexas.edu/~rwmcm">Rob McMullen</a><br>E-mail: <a href="mailto:rwmcm@mail.ae.utexas.edu">rwmcm@mail.ae.utexas.edu</a><br>Updated: 4 Sep 96<br></body></html>
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