N-dimensional rotation

["Antonio Plaza Miguel" <aplaza(at)unex.es>]

Hi everybody!

I was wondering if the ROT and ROTATE functions of IDL 5.3 allow the
rotation of N-dimensional vectors, but I have just found that only 1D and 2D
arrays can be specified as input parameters for these functions.

I would be grateful if somebody could give me some links to
information/source code about this subject. Our current objective is to
analyze the N-dimensional scatterplot of a hyperspectral image in order to
find spectrally pure elements. I know ENVI has a tool (N-dimensional
visualizer) which allows to visualize and rotate the data cloud
interactively, but our purpose is to incorporate some automation to the
process.

Many thanks in advance.
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Antonio Plaza Miguel
Departamento de Informática
Escuela Politécnica de Cáceres
University of Extremadura, SPAIN
aplaza@unex.es
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