Hi
  I work with package "rpart" for draw trees,for example:
  library(rpart) 
  fit <- rpart(Price ~ Mileage + Type + Country, cu.summary)
  plot(fit, compress=TRUE)
  text(fit, use.n=TRUE)
   and then i want compute error of each tree with t.test.(with package "ROCR" comparison two trees).
  and i can not coding this problem?
  Regards



       
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