https://stat.ethz.ch/pipermail/r-sig-mac/2008-June/005096.html
Given that this pops up every now and then I have added it to the FAQ.
Cheers,
S
On Jan 19, 2009, at 7:34 AM, Paul J. Ossenbruggen wrote:
Hi,
I produced the attached black and white map in R using following
set of commands.
par(mfrow=c(1,2))
plot(Z.pop, main = "Mp",col = gray(seq(0.0,1,0.01)))
contour(sk.pop, add=TRUE, nlev = 6, col = gray(1))
plot(Z1.vmt, main = "Mv",col = gray(seq(0.0,1,0.01)))
contour(sk1.vmt, add=TRUE, nlev = 6, col = gray(1))
Z.pop <- as.im(stuff) where stuff is a spatstat ppp file.
The attached black and white pdf file shown here, which was saved in
R, gives a black and light gray grid-like pattern that doesn't exist.
The attached map will not produce this image in Adode Acrobat
Reader. It can be opened in Preview.
A black and white map looks great in R. These issues do not exist
when "col = heat.color", etc. i.e. a color palette. In fact, Adode
Acrobat Reader opens the file without a problem. It suggests to me
that the black and white map is corrupted.
A method to solve this problem would be greatly appreciated.
Thanks
Paul
<vmt2_9_BW.pdf>
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