Dear useRs,
When I use coplot() and output to png/jpeg/bmp, the grid lines from
the scatter plots disappear. If I output to pdf() the grid lines are
there, however I can't use it - I have many points, and the resulting
PDF file is large and very slow to open and scroll through. (By the
way, if I click File-Save As-png/jpeg/bmp from Rgui.exe, the grid
lines are preserved - but I need to use code.)
With coplot(), is there a way to:
1. Keep the grid lines in the scatter plots when exporting output to
png(), and perhaps change their color?
2. Specify the number of grid lines to be drawn on the x and y axes?
I'm running R 2.0.0 on Win XP.
Thank you,
b.
a <- rnorm(50000)
b <- rnorm(50000)
c <- rnorm(50000)
#pdf("test.pdf",height=9,width=12)
png("test.png",height=900,width=1200)
coplot(a ~ b | c,pch=20,col="navy",
bar.bg=c(num=gray(0.8),fac=grey(0.95)))
dev.off()
bogdan romocea wrote:> Dear useRs, > > When I use coplot() and output to png/jpeg/bmp, the grid lines from > the scatter plots disappear. If I output to pdf() the grid lines are > there, however I can't use it - I have many points, and the resulting > PDF file is large and very slow to open and scroll through. (By the > way, if I click File-Save As-png/jpeg/bmp from Rgui.exe, the grid > lines are preserved - but I need to use code.) > > With coplot(), is there a way to: > 1. Keep the grid lines in the scatter plots when exporting output to > png(), and perhaps change their color? > 2. Specify the number of grid lines to be drawn on the x and y axes? > > I'm running R 2.0.0 on Win XP. > > Thank you, > b. > > a <- rnorm(50000) > b <- rnorm(50000) > c <- rnorm(50000) > #pdf("test.pdf",height=9,width=12) > png("test.png",height=900,width=1200) > coplot(a ~ b | c,pch=20,col="navy", > bar.bg=c(num=gray(0.8),fac=grey(0.95))) > dev.off()For me "grid lines" are there using R-2.0.1, Windows NT, with your example. Uwe Ligges> ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
The lines are there for Uwe and for me: perhaps your PNG viewer is defective, possibly your graphics hardware has a buggy driver. File-Save As-png/jpeg/bmp runs png() internally, so the exact same code is used. As it is when savePlot() is used, which might be a workaround for you. On Wed, 29 Dec 2004, bogdan romocea wrote:> Dear useRs, > > When I use coplot() and output to png/jpeg/bmp, the grid lines from > the scatter plots disappear. If I output to pdf() the grid lines are > there, however I can't use it - I have many points, and the resulting > PDF file is large and very slow to open and scroll through. (By the > way, if I click File-Save As-png/jpeg/bmp from Rgui.exe, the grid > lines are preserved - but I need to use code.) > > With coplot(), is there a way to: > 1. Keep the grid lines in the scatter plots when exporting output to > png(), and perhaps change their color? > 2. Specify the number of grid lines to be drawn on the x and y axes? > > I'm running R 2.0.0 on Win XP. > > Thank you, > b. > > a <- rnorm(50000) > b <- rnorm(50000) > c <- rnorm(50000) > #pdf("test.pdf",height=9,width=12) > png("test.png",height=900,width=1200) > coplot(a ~ b | c,pch=20,col="navy", > bar.bg=c(num=gray(0.8),fac=grey(0.95))) > dev.off() > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html >-- Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595