PCA: Get fraction variance accounted for...

A command to query the selected PCA for the fraction variance accounted for by the selected components.


Principal component range
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.


The contribution is defined as:

Σi=from..to eigenvalue[i] / Σi=1..numberOfEigenvalues eigenvalue[i]

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© djmw, January 6, 1999