Search Archives
Search tips
from:Name
Search by author name, e.g. from:Duncan Murdoch
"exact phrase"
Match an exact phrase
word1 word2
Match messages containing both words
Date range
Use the date pickers to filter results to a time period
Use the list dropdown to narrow results to a specific mailing list. Combine from: with other terms to filter by author and content.
sampling from general multivariate pdf
Blair Smith
·
Jul 21, 2009
·
r-help
Hi, Forgive me if I seem naive, I'm tackling multivariate stats for the first time! Q. I'd like to know if there are packages that can be used to simulate random draws from general multivariate (joint) PDF functions...
which to trust...princomp() or prcomp() or neither?
Blair Smith
·
Nov 24, 2009
·
r-help
According to R help: princomp() uses eigenvalues of covariance data. prcomp() uses the SVD method. yet when I run the (eg., USArrests) data example and compare with my own "hand-written" versions of PCA I get what looks like the...
Can't find what you're looking for? Try searching with Google .