hello, subsequently to a NMDS analysis (performed with metaMDS or isoMDS) is it possible to rotate the axis through a varimax-rotation? Thanks in advance. Bernd Panassiti
have you looked at the vegan viginette- I know there is proscrutes rotation. On Tue, Sep 9, 2008 at 3:54 PM, Bernd Panassiti <bernd.panassiti at uni-rostock.de> wrote:> hello, > > subsequently to a NMDS analysis (performed with metaMDS or isoMDS) is > it possible to > rotate the axis through a varimax-rotation? > > Thanks in advance. > > Bernd Panassiti > > ______________________________________________ > R-help at r-project.org mailing list > stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >-- Stephen Sefick Research Scientist Southeastern Natural Sciences Academy Let's not spend our time and resources thinking about things that are so little or so large that all they really do for us is puff us up and make us feel like gods. We are mammals, and have not exhausted the annoying little problems of being mammals. -K. Mullis
At 9:54 PM +0200 9/9/08, Bernd Panassiti wrote:>hello, > >subsequently to a NMDS analysis (performed with metaMDS or isoMDS) is >it possible to >rotate the axis through a varimax-rotation? > >Thanks in advance. > >Bernd PanassitiBernd, Yes. The output of isoMDS is an object with points and stress. consider the following example: test.data <- Harman74.cor$cov #twenty four mental measurements harm.dist <- sqrt(2*(1- test.data) ) #convert correlations to distances harm.iso <- isoMDS(harm.dist,k=2) # find the multidimensional solution harm.varimax <- varimax(harm.iso$points) #rotate with varimax op <- par(mfrow=c(1,2)) plot(harm.iso$points, main="unrotated") plot(harm.varimax$loadings,main="rotated") Bill> >______________________________________________ >R-help at r-project.org mailing list >stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code.-- William Revelle personality-project.org/revelle.html Professor personality-project.org/personality.html Department of Psychology wcas.northwestern.edu/psych Northwestern University northwestern.edu Use R for psychology personality-project.org/r