Stefan Evert wrote:
On 23 Aug 2009, at 20:26, Uwe Ligges wrote:
Since it looks like nobody answered so far:
Your code is not reproducible, we do not have rfc, y, zVals nor NoCols.
It's much easier to reproduce: just type in the first example from the
"image" help page
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))
then save from the quartz() display
Well, not possible for me on Windows .....
Anyway, please use the pdf() device directly and see if it works:
pdf("path/to/file.pdf")
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))
dev.off()
(I used the menu) and view with
Adobe Reader 9 (I seem to have 9.0.0).
You should upgrade (even just for security reasons and many bugfixes),
9.1.3 is recent on Windows.
Uwe Ligges
Instead of the fine white lines
you always get with Preview.app and other inaccurate PDF renderers,
there are now huge gaps between the pixels (around 1/10th of pixel width).
This is very probably a bug in the Quartz device (or Quartz itself), as
the lines go away if you save the plot with dev.copy2pdf(), which I
normally use.
@OP: Do you have any particular reason for using quartz.save() or the
menu item instead of dev.copy2pdf()?
You could also try to place a screenshot somewhere on a webpage
including the info about the settings of the corresponding viewer.
I've tried switching off _all_ of the numerous anti-aliasing options of
Adobe Reader 9; absolutely no difference.
Hope this helps,
Stefan
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and provide commented, minimal, self-contained, reproducible code.
