Dear Steven, You find the classical Factor Analysis in factanal in the package "stats".
FA is found also in other packages. If you want Confirmative Factor Analysis you find it as a subset of sem in the "sem" package. Good luck. Ralf Finne Novia University of Applied Sciences. Finland. >>> Steven Lembark <lemb...@wrkhors.com> 24.05.10 22:03 >>> Trying to separatey correlate the regions of HIV-1's gp120 with neutralization data. I have comparison matrixes for the sequences and cross-clade neutralization data. My guess is that analyzing in the individual regions will give us better correlation with the neutralization data, but at this point cannot find a good package for analyzing the similarity matrixes. The inputs inlcude a square matrixes of comparisons between each clade for each region and cross-clade antibody responses. What I need is a level of correlation between the neutralization data and the similarity matrixes. Searching CRAN for "factors analysis", "cross clade", and "corretion model" in various combinations hadn't gotten me anything that looks relevant. Any advice would be appreciated. thanx -- Steven Lembark 85-09 90th St. Workhorse Computing Woodhaven, NY, 11421 lemb...@wrkhors.com +1 888 359 3508 _______________________________________________ R-sig-Epi@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-sig-epi _______________________________________________ R-sig-Epi@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-sig-epi