Re: [R] Principle components analysis on a large dataset

2009-08-21 Thread Jari Oksanen
Moshe Olshansky m_olshansky at yahoo.com writes: Hi Misha, Since PCA is a linear procedure and you have only 6000 observations, you do not need 68000 variables. Using any 6000 of your variables so that the resulting 6000x6000 matrix is non-singular will do. You can choose these 6000

[R] Principle components analysis on a large dataset

2009-08-21 Thread Prof. John C Nash
-0700 (PDT) From: misha680 mk144...@bcm.edu Subject: [R] Principle components analysis on a large dataset To: r-help@r-project.org Message-ID: 25072510.p...@talk.nabble.com Content-Type: text/plain; charset=us-ascii Dear Sirs: Please pardon me I am very new to R. I have been using MATLAB. I

Re: [R] Principle components analysis on a large dataset

2009-08-21 Thread misha680
mk144...@bcm.edu wrote: From: misha680 mk144...@bcm.edu Subject: [R] Principle components analysis on a large dataset To: r-help@r-project.org Received: Friday, 21 August, 2009, 10:45 AM Dear Sirs: Please pardon me I am very new to R. I have been using MATLAB. I was wondering if R

[R] Principle components analysis on a large dataset

2009-08-20 Thread misha680
Dear Sirs: Please pardon me I am very new to R. I have been using MATLAB. I was wondering if R would allow me to do principal components analysis on a very large dataset. Specifically, our dataset has 68800 variables and around 6000 observations. Matlab gives out of memory errors. I have tried

Re: [R] Principle components analysis on a large dataset

2009-08-20 Thread Moshe Olshansky
analysis on a large dataset To: r-help@r-project.org Received: Friday, 21 August, 2009, 10:45 AM Dear Sirs: Please pardon me I am very new to R. I have been using MATLAB. I was wondering if R would allow me to do principal components analysis on a very large dataset. Specifically

[R] Principle components analysis on a large dataset

2009-08-20 Thread misha680
Dear Sirs: Please pardon me I am very new to R. I have been using MATLAB. I was wondering if R would allow me to do principal components analysis on a very large dataset. Specifically, our dataset has 68800 variables and around 6000 observations. Matlab gives out of memory errors. I have tried