Hi, Not sure if these are relevant as they have been on my "must look at" list for some time and I've not managed to get around to it ...
http://www.cmap.polytechnique.fr/~aspremon/PDF/SPCAhandbookSV.pdf http://www2.imm.dtu.dk/projects/manifold/Papers/sparsepc.pdf Martyn -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jim Silverton Sent: 08 July 2014 17:30 To: [email protected] Subject: Re: [R] PCA with a lot of zeros Hello all, I was wondering if R has some routine that can handle PCA with a lot of zeros. I have fourteen variables - these variables represent angles...so there are some negative and some positive angles. Histograms appear sparse - in the sense that there are gaps. Any ideas or papers would be greatly appreciated. -- Thanks, Jim. [[alternative HTML version deleted]] ______________________________________________ [email protected] 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. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star.\ _...{{dropped:3}} ______________________________________________ [email protected] 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.
