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<p class="text-center"><a href="colormap.html#AcquireImageColormap">AcquireImageColormap</a> &#8226; <a href="colormap.html#CycleColormap">CycleColormap</a></p>

<h2><a href="../../api/MagickCore/colormap_8c.html" id="AcquireImageColormap">AcquireImageColormap</a></h2>

<p>AcquireImageColormap() allocates an image colormap and initializes it to a linear gray colorspace.  If the image already has a colormap, it is replaced.  AcquireImageColormap() returns MagickTrue if successful, otherwise MagickFalse if there is not enough memory.</p>

<p>The format of the AcquireImageColormap method is:</p>

<pre class="text">
MagickBooleanType AcquireImageColormap(Image *image,const size_t colors,
  ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<dd> </dd>
<dl class="dl-horizontal">
<dt>image</dt>
<dd>the image. </dd>

<dd> </dd>
<dt>colors</dt>
<dd>the number of colors in the image colormap. </dd>

<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>

<dd>  </dd>
</dl>
<h2><a href="../../api/MagickCore/colormap_8c.html" id="CycleColormap">CycleColormap</a></h2>

<p>CycleColormap() displaces an image's colormap by a given number of positions.  If you cycle the colormap a number of times you can produce a psychodelic effect.</p>

<p>WARNING: this assumes an images colormap is in a well know and defined order. Currently Imagemagick has no way of setting that order.</p>

<p>The format of the CycleColormapImage method is:</p>

<pre class="text">
MagickBooleanType CycleColormapImage(Image *image,const ssize_t displace,
  ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<dd> </dd>
<dl class="dl-horizontal">
<dt>image</dt>
<dd>the image. </dd>

<dd> </dd>
<dt>displace</dt>
<dd> displace the colormap this amount. </dd>

<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>

<dd>  </dd>
</dl>
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