Dear All,
In a package, I want to use PCA function. The structure I used follow this
page: http://www.statmethods.net/advstats/factor.html.
fit<-principle(mydata, nfactors=9, rotation=TRUE)
or:
result<-PCA(mydata)
But I don't known why R language in my computer noticed: "not found
principle", "not found PCA".
I download and installed R-2.6.2-win32.exe.
Thanks alot for answering me.
Hue University, VietNam.
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phthao05 wrote:> Dear All, > In a package, I want to use PCA function. The structure I used follow this > page: http://www.statmethods.net/advstats/factor.html. > fit<-principle(mydata, nfactors=9, rotation=TRUE) > or: > result<-PCA(mydata) > > But I don't known why R language in my computer noticed: "not found > principle", "not found PCA". > I download and installed R-2.6.2-win32.exe. > Thanks alot for answering me. > Hue University, VietNam.Hi, The "principal" (note the spelling - do not let your spellchecker convince you otherwise) function is in the "psych" package. You must download and install this package in order to use the function. The PCA function is in the "FactoMineR" package. same deal. See "An Introduction to R" in your HTML R help if you don't know how to download and install packages. Jim
phthao05 wrote:> Dear All, > In a package, I want to use PCA function. The structure I used follow this > page: http://www.statmethods.net/advstats/factor.html. > fit<-principle(mydata, nfactors=9, rotation=TRUE) > or: > result<-PCA(mydata) > > But I don't known why R language in my computer noticed: "not found > principle", "not found PCA". > I download and installed R-2.6.2-win32.exe. > Thanks alot for answering me. > Hue University, VietNam. >Hi, You can use the prcomp() function to perform a principal component analysis, it is part of the standard installation of R. As a tip for finding the functions you need, use help.search() (e.g. help.seach("principal component")) cheers, Paul -- Drs. Paul Hiemstra Department of Physical Geography Faculty of Geosciences University of Utrecht Heidelberglaan 2 P.O. Box 80.115 3508 TC Utrecht Phone: +31302535773 Fax: +31302531145 http://intamap.geo.uu.nl/~paul