I am creating a data.frame inside a function and the set of variables to include depends on the current value of other variables. Is there a way to accomplish this in the original assignment? Or must I first create the core data.frame with the variables I always want and then use if blocks to add other variables?
Basically, I'm hoping for something like this (which does not work): newDat <- data.frame(x, y, if(zInclude) z else NULL) Thanks, Jenny ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
