Le mercredi 20 décembre 2006 à 12:32 +0100, laurent exsteens a écrit :
> great thanks to all :)
> PDL is a magic thing :)
>
> but I have searched for practical function like mean, cov, ...
> I've foud reduce('avg', 1) to produce the colMean.
>
> What I search now is a scaling function... I have a matrix whith
> vectors in rows, and I want to center them before using SVD
> decomposition... I read the PDL::Transfom and find map but I'm not
> sure this is what I need...
>
> can you help me?
See the end of the following mail, I have a PDL-Perl module that does
all what you want (and more) but I can not publish it because of
problems with distance matrices (may be later, when time will permit):
http://mailman.jach.hawaii.edu/pipermail/perldl/2006-August/000588.html
Hope that helps,
Greg
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