> res=names(dat); > get(res[ind],pos=dat) will retrieve dat$name
There are far less baroque was of doing that (including dat$name and dat[["name"]]. Both dat$name and dat[["name"]] require you to know what "name" is. I was looking for a way to retrieve a data frame column by name without actually knowing what the data frame column name was. get() seems to do that, but I am open to other options. Thank you for your advice regarding [ vs. [[. Indeed, lower(dat[[ind]]) does return the desired result. However, it seems that ind can only be a single integer (or evaluate to TRUE for only 1 column), I guess because "[[" is returning a vector. By "text" I mean anything that was non-numerical: character and factor classes, in my case. -- View this message in context: http://r.789695.n4.nabble.com/Change-case-of-factor-in-data-frame-tp4651696p4651971.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org 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.
