Re: [R] PCA in Q- and R-modes

2017-01-18 Thread Bert Gunter
Off topic for this list. Post on stats.stackexchange.com or similar for statistics questions. Post on Bioconductor list for biology-related (e.g. proteomics) data anaysis questions. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking th

[R] PCA in Q- and R-modes

2017-01-18 Thread Josh Mitteldorf
I'm working with proteomic data, helping a student who knows biology and has done analysis in R without understanding it in depth. We have 3000 protein levels for 6 ages. I can treat this as 6 vectors in 3000-dimensional space, diagonalize a 6x6 covariance matrix and find 5 principal components,