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.
