code rm(list=ls()) library(vegan) library(MASS)
data(varespec) print(varespec) str(varespec) #PCA vare.pca <- rda(varespec) vare.pca plot(vare.pca) sum(apply(varespec, 2, var)) biplot(vare.pca, scaling = -1) Elaine On Sat, Aug 14, 2010 at 10:48 AM, Ben Bolker <bbol...@gmail.com> wrote: > elaine kuo <elaine.kuo.tw <at> gmail.com> writes: > > > Pls kindly advise what scaling is in plot. > > Sometime it could be negative but sometimes it might be positive > > .(I guess it is the proportion between the plot and the margin) > > Your question is unclear. Please give more context and/or details. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
