??? Undefined function or method 'princomp' for input arguments of type 'double'.

Question

Pierre 2011-4-20

Hello,

I would like to implement a PCA on a matrix (m*p) with p<m of double.

Statistics toolbox is installed and licensed. When I use the princomp function, Matlab shows me this :

??? Undefined function or method 'princomp' for input arguments of type 'double'.

How can I compute properly this function ?

Thanks for any help !

Answer 1

Chirag Gupta 2011-4-20

Try: which princomp

This should print something to the effect of C:\Program Files\MATLAB\R2010b\toolbox\stats\stats\princomp.m if Stats has been installed properly.

If you do not get this, try rehash toolboxcache

before using the command. (This should rehash the toolbox functions and now which princomp should show you the correct file)