Arthur Burke wrote: > > ... I get the four lines that I expected but the legend includes the > Group level "cohort 4" . > > How can I get rid of "cohort 4" in Group? >
This link might be of interest for you: http://wiki.r-project.org/rwiki/doku.php?id=tips:data-manip:drop_unused_levels hth Stefan ______________________________________________ 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.
