> If a function uses substitute() or its equivalent to avoid evaluating > its arguments in the normal way, you are pretty much forced to use > eval() with the output of substitute() or call() or use do.call() > to evaluate the arguments it will not evaluate for itself.
Which is why I'd argue all functions that do so should provide a version that doesn't do non-standard lookup/evaluation - and that's the idea behind aes_string. Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ [email protected] 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.
