Andy
> -Original Message-
> From: r-devel-boun...@r-project.org
> [mailto:r-devel-boun...@r-project.org] On Behalf Of Lars
> Sent: Thursday, April 30, 2009 12:43 PM
> To: r-devel@r-project.org
> Subject: [Rd] unexpected behavior of rpart 3.1-43, loss matrix
>
> Hi,
&
Hi,
I just noticed that rpart behaves unexpectecly, when performing
classification learning and specifying a loss matrix.
if the response variable y is a factor and if not all levels of the
factor occur in the observations, rpart exits with an error:
> df=data.frame(attr=1:5,class=factor(c(2,3,
