As Bert suggests, the help file explains the differences between princomp
and prcomp. Look under the Details section
?princomp
?prcomp
# the first PC using princomp
a - princomp(USArrests, cor=TRUE)
a1 - a$scores[, 1]
# the first PC using prcomp
# use center=TRUE and scale.=TRUE for the
Hi ,
To my knowledge, there're two functions that can do principal component
analysis, princomp and prcomp.
I don't really know the difference; the only thing I know is that when
the sample size number of variable, only prcomp will work. Could someone
tell me the difference or where I can
How about reading the Help files?
-- Bert
On Wed, Aug 22, 2012 at 8:34 PM, jpm miao miao...@gmail.com wrote:
Hi ,
To my knowledge, there're two functions that can do principal component
analysis, princomp and prcomp.
I don't really know the difference; the only thing I know is that
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