Re: [R] Q and R mode in Principal Component Analysis

2011-09-06 Thread William Revelle
At 4:10 PM +0100 9/6/11, Lívio Cipriano wrote: Hi, Can anyone explain me the differences in Q and R mode in Principal Component Analysis, as performed by prcomp and princom respectively. Dear Livio, The help file of prcomp says it pretty well: "The calculation is done by a singular value

Re: [R] Q and R mode in Principal Component Analysis

2011-09-06 Thread Steve Lianoglou
Hi, 2011/9/6 Lívio Cipriano : > Hi, > > Can anyone explain me the differences in Q and R mode in Principal Component > Analysis, as performed by prcomp and princom respectively. Perhaps this tutorial will help? http://www.uga.edu/strata/software/pdf/pcaTutorial.pdf Search that pdf for "q-mode"

[R] Q and R mode in Principal Component Analysis

2011-09-06 Thread Lívio Cipriano
Hi, Can anyone explain me the differences in Q and R mode in Principal Component Analysis, as performed by prcomp and princom respectively. Regards Lívio Cipriano __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEAS