?try Sent from my iPad
On May 8, 2012, at 22:03, Lee <muell...@gmail.com> wrote: > I have a series of data which is managed through a loop. The loop creates > "pivot tables" of my data using the *cast* function in the > *reshape*library. For the most part, the data is all plotted > correctly. > Unfortunately, there are a couple of data sets which create errors and halt > the loop. > > One of the tables looks like the following: > > dbh Black Walnut > 1 8 38.19722 > 2 10 48.89244 > 3 12 38.19722 > > When the loop attempts the barplot() function, the following error is > returned: > Error in seq_len(p) : argument must be coercible to non-negative integer > > In other cases, there is simply no data in the specified set of data. > Therefore, the table is full of NA's. Obviously, this does not need to be > plotted, but I cannot simply remove it from the larger database. I need my > loop to continue regardless of if it runs into these issues. > > *Question: What can I do to ensure the above single variable table will > plot correctly? and what can I do to suppress errors on the datasets which > do not have data so the loop continues?* > > full code: http://pastebin.com/LB88hpfM > > Thank you in advance. > > -- > all the best, > Lee Mueller > ISA Certified Arborist MI-4148A > Registered Forester #46043 > > [[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.