[R] beginner's question: group of regressors by name vector?

David Freedman 3.14david at gmail.com
Thu Feb 12 17:26:54 CET 2009

The predictors and outcomes in lm can be matrices, so you could use something
like the following:

David Freedman

ivowel wrote:
> dear r-experts: there is probably a very easy way to do it, but it eludes  
> me right now. I have a large data frame with, say, 26 columns named "a"  
> through "z". I would like to define "sets of regressors" from this data  
> frame. something like
> myregressors=c("b", "j", "x")
> lm( l ~ myregressors, data=... )
> is the best way to create new data frames that contain all the variables I  
> want, then use ".", and then destroy them again? or am I overlooking  
> something obvious?
> sincerely,
> /iaw
> 	[[alternative HTML version deleted]]
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