Kernelized PCA with GPULib

I haven't had much time lately to play with GPULib, although there are plenty of ENVI/IDL apps that I want to experiment with. An ENVI extension for kernelized PCA (nonlinear principal components analysis using a radial basis kernel, mentioned in an earlier blog) can be downloaded from my software website. It is pretty rudimentary, but illustrates the use of quite a few GPULib functions. See also this short ppt on nonlinear PCA with GPULib.