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From: "Wall, Steven" on 19 Feb 2010 12:29
SAS-Lers:

I rarely use PROC PRINCOMP, but a colleague has asked me to use it for PCA.=
I have a matrix of Nei's distances for the genotypes I want to analyze. =
Can I use a distance matrix directly as the input to PROC PRINCOMP or do I =
need to convert it to a similarity matrix first? Documentation I have says=
you can use a correlation matrix, but I'm not seeing anything about a dist=
ance matrix.

Thanks for any guidance you can give.
sjw


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