Hi, As an alternative, maybe you could use lattice::panel.levelplot.raster which I think doesn't have this problem in pdf viewers.
HTH, baptiste On 26 October 2010 02:30, David Winsemius <dwinsem...@comcast.net> wrote: > > On Oct 25, 2010, at 6:50 AM, Mario Valle wrote: > >> Dear all, >> I'm using R 2.12.0 on Windows 7 (32bits) >> I created a filled contour from the attached data using the following >> code: >> >> load('bug.RData') >> pdf('bug.pdf', width=14, height=7) >> filled.contour(o4$x, o4$y, o4$z, color=rainbow, xlim=c(4,18), >> ylim=c(0,35), zlim=c(14,36)) >> dev.off() >> >> If you look (I used acrobat reader 9.4) at the attached bug.pdf, you see >> an incomplete grid of gray lines. > > From the pdf help page: > "Note > If you see problems with PDF output, do remember that the problem is much > more likely to be in your viewer than in R. Try another viewer if possible. > Symptoms for which the viewer has been at fault are apparent grids on image > plots (turn off graphics anti-aliasing in your viewer if you) and missing or > incorrect glyphs in text (viewers silently doing font substitution). > > Unfortunately the default viewers on most Linux and Mac OS X systems have > these problems, and no obvious way to turn off graphics anti-aliasing. " > > Are they there when printed? > > On a Mac I can make the lines in that pdf graphic "appear and disappear" in > different places on my screen by changing the "Page Display" settings for > Resolution in Acrobat Reader, and viewing in other applications like > GraphicConverter I see even more lines tha I do in Acrobat Reader. > > -- > > David. > >> This artifact is not present if the output is PNG (attached, obtained in >> the above code using png('bug.png', width=800, height=400) instead of >> pdf()). >> Seems like a off-by-one bug. Is it a known bug? Is there any workaround? I >> tried lattice::contourplot but it does not support NA. >> Thanks for your help! >> mario >> >> -- >> Ing. Mario Valle >> Data Analysis and Visualization Group | >> http://www.cscs.ch/~mvalle >> Swiss National Supercomputing Centre (CSCS) | Tel: +41 (91) >> 610.82.60 >> v. Cantonale Galleria 2, 6928 Manno, Switzerland | Fax: +41 (91) >> 610.82.82 >> >> >> <bug.pdf><bug.png>______________________________________________ >> 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. > ______________________________________________ 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.