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<!--Copyright (C) 1988-2005 by the Institute of Global Environment and Society (IGES). See file COPYRIGHT for more information.-->
<h1>Graphics Primitives</h1>
Various commands are provided to allow control and display of
various graphics primitives: These enable you to enhance your
data plot by adding customised "artwork". Alternatively, you can
use these commands to create, for example, a map-based diagram
with no data plot involved.<p>
<h2><u>Drawing Commands</u></h2>
<ul>
<a href="gradcomddrawmap.html">draw map</a><br>
<a href="gradcomddrawxlab.html">draw xlab</a><br>
<a href="gradcomddrawylab.html">draw ylab</a><br>
<a href="gradcomddrawstring.html">draw string</a><br>
<a href="gradcomddrawline.html">draw line</a><br>
<a href="gradcomddrawrec.html">draw rec</a><br>
<a href="gradcomddrawrecf.html">draw recf</a><br>
<a href="gradcomddrawmark.html">draw mark</a><br>
<a href="gradcomddrawpolyf.html">draw polyf</a><br>
<a href="gradcomddrawwxsym.html">draw wxsym</a><br></ul>
<br>
<h2><u>Controlling drawing commands</u></h2>
<ul>
<a href="gradcomdsetfont.html">set font</a><br>
<a href="gradcomdsetline.html">set line</a><br>
<a href="gradcomdsetstring.html">set string</a><br>
<a href="gradcomdsetstrsiz.html">set strsiz</a><br>
<a href="gradcomdsetrgb.html">set rgb</a><br></ul><br>
<h2><u>Plot clipping</u></h2>
<ul>
You may specify a clipping area for drawing graphics primitives
such as lines and strings. When you do a <a
href="gradcomddisplay.html"><code>display</code></a> command, GrADS
sets the clipping region to the parea, draws the graphic, then
sets the clipping region to the entire page. Even if you have
set the clipping region, a display command will reset it to the
entire page. To clip the display of the various draw commands:<p>
<dd><code><a href="gradcomdsetclip.html">set clip</a> xlo xhi ylo yhi</code><p>
where <code>xlo,xhi,ylo,yhi</code> are the clipping coordinates in real page
inches.
</ul>
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