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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>plgcol0: Returns 8-bit RGB values for given color index from cmap0</title><link rel="stylesheet" type="text/css" href="stylesheet.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="index.html" title="Documentation of the PLplot plotting software"><link rel="up" href="API.html" title="Chapter 17. The Common API for PLplot"><link rel="prev" href="plgcmap1_range.html" title="plgcmap1_range: Get the cmap1 argument range for continuous color plots"><link rel="next" href="plgcol0a.html" title="plgcol0a: Returns 8-bit RGB values and PLFLT alpha transparency value for given color index from cmap0"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">
<code class="function">plgcol0</code>: Returns 8-bit RGB values for given color
index from cmap0
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="plgcmap1_range.html">Prev</a> </td><th width="60%" align="center">Chapter 17. The Common API for PLplot</th><td width="20%" align="right"> <a accesskey="n" href="plgcol0a.html">Next</a></td></tr></table><hr></div><div class="sect1"><div class="titlepage"><div><div><h4 class="title"><a name="plgcol0"></a>
<code class="function">plgcol0</code>: Returns 8-bit RGB values for given color
index from cmap0
</h4></div></div></div><p>
</p><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">
<b class="fsfunc">plgcol0</b>
(</code></td><td><var class="pdparam">icol0</var>, </td></tr><tr><td> </td><td><var class="pdparam">r</var>, </td></tr><tr><td> </td><td><var class="pdparam">g</var>, </td></tr><tr><td> </td><td><var class="pdparam">b</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div><p>
</p><p>
Returns 8-bit RGB values (0-255) for given color from cmap0 (see
<a class="xref" href="color.html#color-map-0" title="Color Map0">the section called “Color Map0”</a>). Values are
negative if an invalid color id is given.
</p><div class="variablelist"><dl class="variablelist"><dt><span class="term">
<em class="parameter"><code>icol0</code></em>
(<code class="literal"><a class="link" href="c.html#PLINT-type"><code class="function">PLINT</code></a></code>, input)
</span></dt><dd><p>
Index of desired cmap0 color.
</p></dd><dt><span class="term">
<em class="parameter"><code>r</code></em>
(<code class="literal"><a class="link" href="c.html#PLINT_NC_SCALAR-type"><code class="function">PLINT_NC_SCALAR</code></a></code>, output)
</span></dt><dd><p>
Returned value of the 8-bit red value.
</p></dd><dt><span class="term">
<em class="parameter"><code>g</code></em>
(<code class="literal"><a class="link" href="c.html#PLINT_NC_SCALAR-type"><code class="function">PLINT_NC_SCALAR</code></a></code>, output)
</span></dt><dd><p>
Returned value of the 8-bit green value.
</p></dd><dt><span class="term">
<em class="parameter"><code>b</code></em>
(<code class="literal"><a class="link" href="c.html#PLINT_NC_SCALAR-type"><code class="function">PLINT_NC_SCALAR</code></a></code>, output)
</span></dt><dd><p>
Returned value of the 8-bit blue value.
</p></dd></dl></div><p>
Redacted form: <code class="function">plgcol0(icol0, r, g, b)</code>
</p><p>
This function is used in example 2.
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="plgcmap1_range.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="API.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="plgcol0a.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">
<code class="function">plgcmap1_range</code>: Get the cmap1 argument
range for continuous color plots
</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">
<code class="function">plgcol0a</code>: Returns 8-bit RGB values and PLFLT alpha
transparency value for given color index from cmap0
</td></tr></table></div></body></html>
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