[R] how to display case names in biplot.prcomp?

[Bill.Venables at csiro.au]

One way is to give the names you want to use as the rownames of the scores component of the principal component analysis object.  e.g.

pca <- princomp(~.-Species, iris)
rownames(pca$scores) <- paste("C", substring(1001:1150, 2), sep = "")
biplot(pca) 

(May I also suggest you treat the group with a little more courtesy in the way you phrase your questions in future and get your shift key fixed?  It would also be nice to know your real name.)


Bill Venables
http://www.cmis.csiro.au/bill.venables/ 


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of rat.cage
Sent: Monday, 4 May 2009 10:43 AM
To: r-help at r-project.org
Subject: [R] how to display case names in biplot.prcomp?

hey,

im trying hard to display names (given in a seperate variable) instead
of "case numbers" in a pca plot (by biplot of a prcomp output). somebody
could help me with this?

lukas

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