On Fri, Apr 17, 2009 at 2:07 PM, Paul Warren Simonin <paul.simo...@uvm.edu> wrote: > Thank you all for your advice. > I have received some good tips, but it was suggested I write back with a > small simulated data set to better illustrate my needs. So, currently my > data frame looks something like: > > ID (date) Temperature Number of fish > 200706183 5 456 > 200706183 5 765 > 200706183 4 567 > 200706183 3 876 > 200706183 3 888 > 200706183 2 111 > 200706184 8 2345 > 200706184 8 654 > 200706184 8 7786 > 200706184 7 345 > 200706184 6 234 > 200706184 6 123 > > > I need to create a plots for each ID (date) of the number of fish observed > at each temperature. Obviously my data frame is much larger. These plots do > not have to be in a specific histogram format, but it seems this may be > appropriate. > Thanks for any additional advice as to how this may be done, either using > plot commands or reformatting my data. > > It seemed the ggplot2 options may be good but so far I have tried qplot with > no success: > > my most recent code looks like: > > qplot(temp,number of fish, geom="histogram",binwidth=1) > > I have tried various tweaks of this, but no success.
The problem is number of fish is not a valid R variable name because it has spaces in it (and you didn't specify the data frame to look for those variable in). Hadley -- 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.