I think you'll find this easiest with ggplot2: library(ggplot2)
ggplot(dat, aes(x = value, y = time, color = group, symbol = id)) + geom_point() # symbol = might not be the right argument -- I'm doing this from memory or similar.... MW On Thu, Mar 14, 2013 at 3:46 PM, li li <hannah....@gmail.com> wrote: > Hi alL, > I have a data frame with 4 columns: "value", "time", "group" and "id". > I would like to plot "value" vs. "time" with different colors for > different levels of "group" and > different symbols for different values of "id". > I think I could do this but I would like to see what is an easier way to > plot > the data this way. > Thank you vey much. > Hanna > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.
