Matrix of dummy variables from a factor
See ?model.matrix. HTH, Andy From: Charles H. Franklin
What is a simple way to convert a factor into a matrix of dummy variables? fm<-lm(y~f) where f is a factor takes care of this in the estimation. I'd like to save the result of expanding f into a matrix for later use. Thanks. Charles -- Charles H. Franklin Professor, Political Science University of Wisconsin, Madison franklin at polisci.wisc.edu chfrankl at wisc.edu 608-263-2022 (voice) 608-265-2663 (fax)
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