[R] pca

[fciclone]

Dear listmates, i've done a pca analisys in R (1.8 v.) 
with the command

pca(Matrix, cent=FALSE, scle=FALSE)  

I have obtained a v matrix very different from the  
component matrix resulted by a factor analysis in SPSS, 
unrotated and with a extraction from a correlation 
matrix. Any clues about this diference?
Thanks in advance,
Alex.
 
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