Using columns with special characters in formulae in R

Question

I\'m trying to make a decision tree using rpart using a data frame that has ~200 columns. Some of these columns have numbers in their names, some have special characters (e.

Answer 1

I just came across the same problem, and I don't want any change in the name when pass it to R formulae. R allow non-syntactic column names with backticks surrounding them. So I try add backticks to the name and it also works well. My code like below:

lapply(colnames(variable), function(gene){
formula0 <- paste0("gleason_grade", "~" "`", gene, "`")
logit <- clm(as.formula(formula0), data = mydata)
})

and now you can pass the new variable to formula without error.
If you don't expect any change to the variable like me, so just backtick it.