Peter Dalgaard wrote: > Peter Ehlers wrote: >> >> cornell.p.gonsch...@iem.fh-friedberg.de wrote: >>> Full_Name: Cornell Gonschior >>> Version: 2.10.0 >>> OS: Linux >>> Submission from: (NULL) (212.201.28.40) >>> >>> >>> Hi, >>> >>> in the introduction to R, you can find the following sentence in the >>> par() >>> chapter: >>> "Use tck=0.01 and mgp=c(1,-1.5,0) for internal tick marks." >>> I thought that's nice, because I wanted to have tick marks and tick >>> labels >>> inside and the axis title outside. >>> >>> But: >>>> plot(z, las=1, tck=0.01, mgp=c(1,-1.5,0)) >>> Warnmeldungen: >>> 1: In plot.window(...) : `mgp[1:3]' are of differing sign >>> 2: In plot.xy(xy, type, ...) : `mgp[1:3]' are of differing sign >>> 3: In axis(side = side, at = at, labels = labels, ...) : >>> `mgp[1:3]' are of differing sign >>> 4: In axis(side = side, at = at, labels = labels, ...) : >>> `mgp[1:3]' are of differing sign >>> 5: In box(...) : `mgp[1:3]' are of differing sign >>> 6: In title(...) : `mgp[1:3]' are of differing sign >>> >>>> par(las=1, tck=0.01, mgp=c(1,-1,0)) >>> Warnmeldung: >>> In par(las = 1, tck = 0.01, mgp = c(1, -1, 0)) : >>> `mgp[1:3]' are of differing sign >>> >>> Was there a recent change, couldn't find anything useful searching >>> the web. >>> >>> Regards, >>> Cornell >> >> Well, it's only a warning, making you aware of a possibly >> unintended par setting. Warnings are good things but if you >> don't want to see them, they can be suppressed. >> >> Certainly not a bug. > > Hmm, then again, I tend to agree with Cornell that there are a bit too > many cases where mgp[1:3]' would sensibly have differing sign, compared > to cases where it is a mistake. In addition to internal tick marks and > labels, there are also cases where the whole axis is shifted into the > plot area. I'd more likely use axis(pos=...) for that, but still. > And, I suppose, if R-Intro mentions it, it would be less confusing if there were mention of the warning. But use of R conditions one to seeing warnings as a good thing. Can't count the number of times I've seen "longer ... is not a multiple of shorter ..." and having it catch a silly user error.
-- Peter Ehlers University of Calgary 403.202.3921 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
