> But if not, it seems to me that it should be added as an array method > to ?rev with an argument specifying which indices to rev() over.
Yes, agreed. Sometimes arrays seem like something bolted onto R that is missing a lot of functionality. Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ 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.