Please provide a self-contained example with a post like this. I guess you mean the output of the last line below? It looks those are just the theoretical proportions if your data is perfectly orthogonal. I found those values invariant to changing the distributional parameters of the variables, but variant to including additional variables in the principal component analysis.
v=rnorm(100,0,3) x=rnorm(100,0,4) y=rnorm(100,0,2) y=y+x x=x+v z1=princomp(cbind(y,x)) summary(z1) summary(z1)$loadings z2=princomp(cbind(y,x,v)) summary(z2) summary(z2)$loadings Is that what you were asking for? Best, Daniel ------------------------- cuncta stricte discussurus ------------------------- -----Ursprüngliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Wu, Hong-Sheng Gesendet: Thursday, July 10, 2008 7:01 PM An: r-help@r-project.org Betreff: [R] princomp loading help Dear all, When I print out princomp's loading outputs, there is alwasy a section for "SS loading", "Proportional Var" and "Cumulative Var". Anybody can tell what they are for? Or anyone can direct me to some reference to read about? Any help will be highly appricated. Hongsheng [[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. ______________________________________________ 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.
