PCA: R-Matrix Determinant =0 and "not positive Definite"

Posted by mzalikhan on Jun 22, 2011; 4:00am
URL: http://spssx-discussion.165.s1.nabble.com/PCA-R-Matrix-Determinant-0-and-not-positive-Definite-tp4512844.html

Hi Everybody

I am new to stats and doing PCA using SPSS 16.0, dealing with some meteorological variables to do synoptic met patterns. The problem is that the correlation matrix is giving 0 determinant with a warning of "not positive definite matrix".

My question is "is that going to affect the results of the PCA?" as the analysis does not quit after this warning, rather it goes on. If yes, what can be  done  in this case?

Peace.
Muhammad Zeeshan