MATLAB Answers

Tim Bennett

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

Asked by Tim Bennett
on 13 Jun 2013


I would like to implement a PCA on a matrix but when I use the princomp function ([COEFF,SCORE] = princomp(X)), Matlab shows me this:

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

Even typing in "princomp" results in:

File 'princomp' not found.

Statistics toolbox is installed and licensed (i.e Symbolic Math Toolbox Version 5.2 R2009a) and I've tried using "which princomp" and "rehash toolboxcache" prior to this command but with no success.

Do I need anything specifically in the Current Directory for the princomp function to be activated?

Any guidance would be appreciated.




No products are associated with this question.

1 Answer

Answer by the cyclist
on 13 Jun 2013

The toolbox you just cited is the Symbolic Math Toolbox. That is not the same as the Statistics Toolbox.

Are you sure you have the stats toolbox?


Join the 15-year community celebration.

Play games and win prizes!

Learn more
Discover MakerZone

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn more

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply Today

MATLAB Academy

New to MATLAB?

Learn MATLAB today!