Re: [R] prcomp() and varimax()

2013-04-07 Thread Mike Amato
Thanks for the reply. Maybe my problem is that prcomp() and varimax() are calculating "cumulative proportion of variance" differently? When I use the tol parameter with prcomp(), it restricts the number of components to 3 and reports that the cumulative variance explained by the third component

[R] prcomp() and varimax()

2013-04-04 Thread Mike Amato
Hello, I am attempting to do a principal components analysis on 15 survey items. I want to use a varimax rotation on the retained components, but I am dubious of the output I am getting, and so I suspect I am doing something wrong. I proceed in the following steps: 1) use prcomp() to inspect