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plmindex.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
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<title>SHTOOLS - Legendre functions</title>
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<h1 id="plmindex">PlmIndex</h1>
<p>Compute the index of an array corresponding to degree <code>l</code> and angular order <code>m</code>.</p>
<h1 id="usage">Usage</h1>
<p><code>index</code> = PlmIndex (<code>l</code>, <code>m</code>)</p>
<h1 id="parameters">Parameters</h1>
<dl>
<dt><code>index</code> : function output, integer</dt>
<dd>Index of an array of associated Legendre functions corresponding to degree <code>l</code> and angular order <code>m</code>.
</dd>
<dt><code>l</code> : input, integer</dt>
<dd>The spherical harmonic degree.
</dd>
<dt><code>m</code> : input, integer</dt>
<dd>The angular order.
</dd>
</dl>
<h1 id="description">Description</h1>
<p><code>PlmIndex</code> will calculate the index of an array of associated Legendre functions corresponding to degree <code>l</code> and angular order <code>m</code>. The input arrays are generated by routines such as <code>PlmBar</code>, <code>PlmBar_d1</code>, <code>PlmSchmidt</code>, <code>PlmSchmidt_d1</code>, <code>PlmON</code>, <code>PlmON_d1</code>, <code>PLegendreA</code>, and <code>PLegendreA_d1</code>. The array index is equal to <code>l*(l+1)/2+m+1</code>.</p>
<h1 id="see-also">See also</h1>
<p><a href="plmbar.html"><code>plmbar</code></a>, <a href="plmbar_d1.html"><code>plmbar_d1</code></a>, <a href="plmschmidt.html"><code>plmschmidt</code></a>, <a href="plmschmidt_d1.html"><code>plmschmidt_d1</code></a>, <a href="plmon.html"><code>plmon</code></a>, <a href="plmon_d1.html"><code>plmon_d1</code></a>, <a href="plegendrea.html"><code>plegendrea</code></a>, <a href="plegendrea_d1.html"><code>plegendrea_d1</code></a></p>
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