[R] PCA with a lot of zeros

[Martyn Byng]

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: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Jim Silverton
Sent: 08 July 2014 17:30
To: r-help at r-project.org
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.

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