Message-ID: <m0ymmbm-0000c2C@verdi.stat.wisc.edu>
Date: 1998-06-18T21:52:38Z
From: Douglas Bates
Subject: minor incompatibility in model.matrix
The S and S-PLUS versions of model.matrix will ignore elements of a
contrasts argument that do not correspond to factors. R does not. It
produces and error of
Error: contrasts apply only to factors
even if the contrasts themselves are NULL.
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._