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<title>ploticus: draw prefab</title>
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<td><br><h2>draw prefab</h2></td>
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<small>
<a href="../doc/welcome.html"><img src="../doc/ploticus.gif" border=0></a><br>
Version 2.41 Mar2009
</small><br><a href="../doc/prefabs.html">Prefabs</a>
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<title>Manual page for draw_prefab(PL)</title>
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<p>
<tt>draw</tt> is a
<a href="prefabs.html">
prefab
</a>
that reads and executes sets of commands which specify low-level drawing operations.<tt> </tt>
<p>
The commands may be one of <b>two distinct types</b>:
<ul>
<li>
a ploticus drawdump file
- a file that has been created previously by running <tt>pl -drawdump</tt> or <tt>pl -drawdumpa</tt> .<tt> </tt>
Often used with prefabs as a
<a href="prefabs.html#drawdump">
convenient way to overlay or combine graphs.<tt> </tt>
</a>
<br><br>
<li>
ploticus draw commands
- a command language described below for creating
lines, polygons, and text, in either absolute space
or scaled space. May be useful as a flexible way to add annotation,
or to add graphics that the other plotting procedures cannot produce,
or to import graphics generated programatically.<tt> </tt>
</ul>
<p>
If you use the <tt>dumpfile</tt> attribute, drawdump content is expected. Otherwise, ploticus draw commands
are expected.<tt> </tt>
<br><br><br>
<h2>Parameters</h2>
<dl>
<dt> <dd>
If using <tt>dumpfile</tt>, none of the standard prefab parameters are applicable.<tt> </tt>
If you're processing ploticus draw commands, and are using commands that operate in
scaled space, the following
<a href="prefab_stdparms.html">
standard prefab parameters
</a>
apply: <b>rectangle</b>, <b>xrange</b>, and <b>yrange</b>.<tt> </tt>
<br><br>
<dt> <dd>
<b>dumpfile</b>
filename
<br>
a drawdump file as created previously using <tt>pl -drawdump</tt> or <tt>pl -drawdumpa</tt>
<br>
Example: <tt>dumpfile=dump1</tt>
<br><br><br>
<dt> <dd>
<b>cmdfile</b>
filename
<br>
the name of a file containing
<a href="drawcommands.html#commandset">
ploticus draw commands
</a>
, one per line.<tt> </tt>
You can also use <tt>stdin</tt> for draw commands to be read from standard input.<tt> </tt>
<br><br><br>
</dl>
<h2>Example using ploticus draw commands</h2>
<p>
<img src="../gallery/prefab_img/draw1.gif">
<p>
<pre>
pl -prefab draw cmdfile=drawcom.dcm xrange="0 40" yrange="0 40" \
rectangle="1 1 3 3"
The drawcom.dcm file begins like this:
movs 3.5 23
lins 3.5 22
lins 3 21.6
..etc.
</pre>
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<td align=right>
<a href="../doc/welcome.html">
<img src="../doc/ploticus.gif" border=0></a><br><small>data display engine <br>
<a href="../doc/Copyright.html">Copyright Steve Grubb</a>
<br>
<br>
<center>
<img src="../gallery/all.gif">
</center>
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Ploticus is hosted at http://ploticus.sourceforge.net</td><td> </td><td>
<a href="http://sourceforge.net/projects/ploticus"><img src="http://sflogo.sourceforge.net/sflogo.php?group_id=38453&type=12"
width="120" height="30" border="0"
alt="Get ploticus data display engine at SourceForge.net. Fast, secure and Free Open Source software downloads" /></a>
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