[R] dummy variables from factors

[Noah Silverman]

Hi,

Looking at a large data set with many factors.

I would like to expand each factor variable into multiple new variables for each level. (0,1) coding.

My first though was just to code a big nasty loop, to take each level and cbind a column onto my data set.  But, that seems painful.  There must be a better way.

Is there an "easy" way to do this in R?

(Note, I don't want to internally represent the levels in the data set, but physically have new columns for each level with a binary indicator.)

Thanks!

--
Noah Silverman
UCLA Department of Statistics
8117 Math Sciences Building
Los Angeles, CA 90095