Re: [R] PCA and % variance explained

2008-09-10 Thread Gad Abraham
pgseye wrote: After doing a PCA using princomp, how do you view how much each component contributes to variance in the dataset. I'm still quite new to the theory of PCA - I have a little idea about eigenvectors and eigenvalues (these determine the variance explained?). Are the eigenvalues

Re: [R] PCA and % variance explained

2008-09-10 Thread pgseye
Thanks everyone, Paul -- View this message in context: http://www.nabble.com/PCA-and---variance-explained-tp19388970p19410675.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list

[R] PCA and % variance explained

2008-09-09 Thread pgseye
After doing a PCA using princomp, how do you view how much each component contributes to variance in the dataset. I'm still quite new to the theory of PCA - I have a little idea about eigenvectors and eigenvalues (these determine the variance explained?). Are the eigenvalues related to loadings

Re: [R] PCA and % variance explained

2008-09-09 Thread ngottlieb
Of pgseye Sent: Tuesday, September 09, 2008 5:39 AM To: r-help@r-project.org Subject: [R] PCA and % variance explained After doing a PCA using princomp, how do you view how much each component contributes to variance in the dataset. I'm still quite new to the theory of PCA - I have a little idea about