I tried Googling for help on this problem, but what I saw only increased my puzzlement.
I found a lovely bit of code called esplot() that makes scatterplots with associated histograms and rug plots. I have been trying to use it on my own data, but the viewport routine on which it depends (I think) is choking on the data I'm trying to plot. $ Error in valid.viewport(...) : Invalid 'yscale' in viewport When I Google this error, I see that others get this message when trying to plot dates. However, my data are two numeric vectors. The strange part is that these vectors are in fact date differences -- they started life as dates -- but I've already converted them to numeric, like so: $ cogdiff <- as.numeric(cogdate - scandate)/365.24 $ labdiff <- as.numeric(labdate - scandate)/365.24 When I check is(cogdiff) and is(labdiff) it tells me that both are numeric vectors. And if I put these variables into other plotting routines (e.g. plot(), qplot()), I get the expected output. So on some level the conversion to numeric has "worked." However: as a sanity check I also tried the esplot() routine on two random vectors I generated, and it DID work on those -- no error message. So I don't think I'm missing any other key dependencies. Something else must be funny about my cogdiff and labdiff variables, but I'm at a loss about what it could be and am looking for suggestions. Thanks in advance... Erin Jonaitis ______________________________________________ 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.
