On Fri, 18 Jan 2008, Silvia Lomascolo wrote: > > Hi R-community, > I am doing a PCA and I need plots for different combinations of axes (e.g., > PC1 vs PC3, and PC2 vs PC3) with the arrows indicating the loadings of each > variables. What I need is exactly what I get using biplot (pca.object) but > for other axes.
The prcomp and princomp methods of biplot() have argument 'choices' that does exactly what you seem to be asking for. > I have plotted PC2 and 3 using the scores of the cases, but I don't get the > arrows proportional to the loadings of each variables on each axis. > > Any hints on this? > > Thanks, Silvia. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ 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.
