This problem can be seen by the following commands: > pb <- winProgressBar(max=1000, label='0') > b <- 1 > setWinProgressBar(pb, b, label=b)
This set of commands (on windows of course, XP in this case) causes R to crash. This is not strictly a bug since the documentation states that the label argument should be a character string and using as.character(b) does work properly. But when I (and possibly others) forget this and use something like the above, having the whole R process crash seems a bit extreme. Possible responses: 1. ignore this and hope that after being punished for not remembering the correct syntax enough times I will eventually learn to do the correct thing. 2. add a check and generate an error if title or lab is not a character string (less severe punishment, I may learn eventually, but maybe not as quick). 3. add label <- as.character(label) and same idea for title, so that the above code works without the user needing to remember the as.character. This may need a check for NULL values as well. 4. Something else that I have not thought of. Number 1 would be easiest for R core, hardest on me. Numbers 2 and 3 have the potential drawback of slowing things down slightly. My sessionInfo() > sessionInfo() R version 2.10.1 Patched (2010-02-08 r51108) i386-pc-mingw32 locale: [1] LC_COLLATE=English_United States.1252 [2] LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base loaded via a namespace (and not attached): [1] tools_2.10.1 > Same thing happens in non-patched 2.10.1 Thanks, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
