R-alpha: model.matrix(.) does not allow `contrasts' ..

[Thomas Lumley]

On Thu, 4 Dec 1997, Martin Maechler wrote:

> and this breaks  multinom from the nnet library
> 	[yes, Kurt, I'm working on that and I'll send you patches..]	
> 
> Is this a bug or an (half-)intentional difference to S ?
> 

I think it's a bug -- you should be able to specify contrasts on a
model-by-model basis if you really want to.  Fortunately it's very rare
for people to use this feature.

	-thomas

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._