Are there lots of missing values in the data? If so, my guess would be that na.omit(h1) leaves you with no data. Have you checked this?
Bert Gunter Genentech -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of SNN Sent: Wednesday, December 26, 2007 2:49 PM To: r-help@r-project.org Subject: [R] Principal Components Analysis Hi, I do have a file that has 500000 columns and 40 rows. I want to apply PCA on that data and this is what I did h1<-read.table("Ccode.txt", sep='\t', header=F) # reads the data from the file Ccode.txt h2<-prcomp(na.omit(h1),center=T) but I am getting the following error "Error in svd(x, nu = 0) : 0 extent dimensions" I appreciate if someone can help Thanks -- View this message in context: http://www.nabble.com/Principal--Components-Analysis-tp14507365p14507365.htm l Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
