[R] standardization

Hi I have dataframe which contain 5 columns and 1000 records. I want standard each cell. I want range each column between 0 and 1 . I think i must use loop? could you help me? - Moody friends. Drama queens. Your life? Nope! - their life, your story.

[R] How can i compute error?

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

[R] How can i compute error

Hi I have two tree and i want compute error of each tree and then cmparison with t.test. I cant coding this problem.Could i help me? Regards - [[alternative HTML version deleted]] __

[R] question

Hi I have two tree and i want compute error of each tree and then cmparison with t.test. I cant coding this problem.Could i help me? Regards - [[alternative HTML version deleted]] __