# GRASS Help System

i.pca -

i.pca is an image processing program based on the algorithm provided by Vali (1990). i.pca processes input 'n' raster map layers and produces 'n' output raster map layers containing the principal components of the input data in decreasing order of variance (contrast).

Manual entry for i.pca

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Automatically created on: Sat Jan 8 06:50:29 2005