Caret Model random forest into PMML error

Question

I would like to export a Caret random forest model using the pmml library so I can use it for predictions in Java. Here is a reproduction of the error I am getting.

Answer 1

You can use the r2pmml package to do the job:

library("caret")
library("r2pmml")

data(iris)

train.rf = train(Species ~ ., data = iris, method = "rf")
print(train.rf)
r2pmml(train.rf, "/tmp/train-rf.pmml")