Correlation matrix is not positive definite

Posted by viswa21 on Nov 17, 2011; 4:25am
URL: http://spssx-discussion.165.s1.nabble.com/Correlation-matrix-is-not-positive-definite-tp4999980.html

Dear all,
I am new to SPSS software. Trying to obtain principal component analysis using factor analysis. The correlation matrix is giving a warning that it is "not a positive definite and determinant is 0".

Please take a look at the xlsx file. The data is about fluorescence emission spectrum of bacteria. Variables are wavelength of excitation.
<a href="http:// http://ifile.it/9lvg18d/3%20bacteria.xlsx">


The data contains more variables than cases. I don't know whether is this causing the problem. I can not see KMO-Bartletts parameter even though i selected it in descriptive.

Reducing the variables solve this problem?? Any help would be invaluable to me. Thanks a million!!

Visu