[GRASS-dev] reg i.pca module

[Moritz Lennert]

On 06/02/13 18:49, Rashad M wrote:
> Hi All,
>
> i.pca outputs raster bands and the pixel values are transformed
> obivously. But anyone can tell me how the transformation works
>
> if a pixel P1 has value X after i.pca it will be Y
>
> Is there any specific math equation that is applied to every pixel by PCA?

http://en.wikipedia.org/wiki/Principal_component_analysis
and
http://grasswiki.osgeo.org/wiki/Principal_Component_Analysis

Moritz