Re: [R] Model Selection with Phylogenetic Independent Contrasts

2011-09-15 Thread Ben Bolker
rjswift gmail.com> writes: > > I'm trying to select a model under PCA using independent contrasts. Since > PICs need to be forced through the origin I've been using lmorigin for the > original regression, but it doesn't appear that stepAIC recognizes it. I > keep receiving an error message - "Er

[R] Model Selection with Phylogenetic Independent Contrasts

2011-09-14 Thread rjswift
I'm trying to select a model under PCA using independent contrasts. Since PICs need to be forced through the origin I've been using lmorigin for the original regression, but it doesn't appear that stepAIC recognizes it. I keep receiving an error message - "Error in na.fail.default(list(Phenology =