On Thu, 5 Jul 2012, Nordlund, Dan (DSHS/RDA) wrote:
The melt syntax you provided in a previous email runs without error on the data that you just supplied. So, your comment that "dput() doesn't want to cooperate" suggests that maybe there is a problem with your waterchem data frame. Maybe someone else will have more insight into the problem.
Dan, Huh! Isn't that interesting? I'll re-read the data into a data frame and see if that makes a difference. I wonder if the issue is with the logical columns; I've not used them before, only dates, factors, and numerals. I'll try without the logicals and see if there's a difference. Thanks for the insight, Rich ______________________________________________ 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.