Batch convert columns to numeric type

Question

I have a dataframe with a bunch of columns that I need to convert to the numeric type. I have written the following code to try to do this, however it is saying the replacem

Answer 1

You can use sapply for this:

dat <- sapply( dat, as.numeric )

If not every column needs converting:

library( taRifx )
dat <- japply( dat, which(sapply(dat, class)=="character"), as.numeric )