[Rd] Request to review a patch for rpart

[Kirill Müller]

Dear list


For my work, it would be helpful if rpart worked seamlessly with an 
empty model:

library(rpart); rpart(formula=y~0, data=data.frame(y=factor(1:10)))

Currently, an unrelated error (originating from na.rpart) is thrown.

At some point in the near future, I'd like to release a package to CRAN 
which uses rpart and relies on that functionality. I have prepared a 
patch (minor modifications at three places, and a test) which I'd like 
to propose for inclusion in the next CRAN release of rpart. The patch 
can be reviewed at https://github.com/krlmlr/rpart/tree/empty-model, the 
files (based on the current CRAN release 4.1-8) can be downloaded from 
https://github.com/krlmlr/rpart/archive/empty-model.zip.

Thanks for your attention.


With kindest regards

Kirill Müller