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PCA: Get fraction variance accounted for...
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<p>
A command to query the selected <a href="PCA.html">PCA</a> for the fraction <i>variance accounted for</i> by the selected components.</p>
<h3>
Setting</h3>
<dl>
<dt>
<b>Principal component range</b>
<dd>
defines the range of the principal components. If you choose both numbers equal, you get the fraction of the "variance" explained by that one component.
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<h3>
Details</h3>
<p>
The contribution is defined as:</p>
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&#931;<sub><i>i</i>=<i>from</i>..<i>to</sub></i> <i>eigenvalue[i]</i> / &#931;<sub><i>i</i>=1..<i>numberOfEigenvalues</sub></i> <i>eigenvalue[i]</i></table>
<h3>Links to this page</h3>
<ul>
<li><a href="Principal_component_analysis.html">Principal component analysis</a>
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<address>
	<p>&copy; djmw, January 6, 1999</p>
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