Hi Paul, >> how do you view how much each component contributes to variance in the >> dataset ...
It helps to read the help: ?princomp ?prcomp Contributions to inertia or variance are reported as standard deviations (princomp.obj$sdev). So square these values to get the variance accounted for by each component. For the rest, see loadings sub Value in the help file. Regards, Mark. pgseye wrote: > > After doing a PCA using princomp, how do you view how much each component > contributes to variance in the dataset. I'm still quite new to the theory > of PCA - I have a little idea about eigenvectors and eigenvalues (these > determine the variance explained?). Are the eigenvalues related to > loadings in R? > > Thanks, > > Paul > -- View this message in context: http://www.nabble.com/PCA-and---variance-explained-tp19388970p19391466.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
