Choose variables based on name (simple regular expression)

Question

I would like to incorporate variable names that imply what I should do with them. I imagine a dataframe \"survey\".

library(Rlab) # Needed for rbern() functi         


        

Answer 1

The "operators" package allows some Perl-like syntax:

library(operators)

survey[, colnames(survey) %~% "bern"]

or

subset(survey, select = colnames(survey) %~% "bern")