Hi Alan, Thank you for the reproducible example. One way to solve it is setting "len" to a bigger number, e.g. len = 500. However, this might slow down the plotting. HTH, Jorge
On Aug 16, 2011, at 7:41 PM, Swanson, Alan wrote: > R gurus, > I'm having an issue with the appearance of image plots produced by R-2.13.1. > When I plot an image (example code pasted below), thin white lines appear > between rows and columns of pixels. The location of the lines seems somewhat > random and change as the graphics device is re-sized. This occurs using a > range of graphic devices (windows, png, bmp, jpeg, tiff, pdf), on two > different machines (windows 7-64 bit and windows XP-32 bit) but not when > using 2.13.0 on either machine. Do others have this issue? Any possible > solutions? > Regards, > Alan > > x <- y <- seq(-4*pi, 4*pi, len=27) > r <- sqrt(outer(x^2, y^2, "+")) > image(z = z <- cos(r^2)*exp(-r/6), col=gray((0:32)/32)) > >> sessionInfo() > R version 2.13.1 (2011-07-08) > Platform: x86_64-pc-mingw32/x64 (64-bit) > > 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 > > other attached packages: > [1] rj_0.5.5-4 > > loaded via a namespace (and not attached): > [1] tools_2.13.1 > > [[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. ______________________________________________ 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.
