Dear All Another one I have touched on before with a much older OS and version.
My sessionInfo() is: > sessionInfo() R version 2.5.1 (2007-06-27) i686-redhat-linux-gnu locale: LC_CTYPE=en_GB.UTF-8;LC_NUMERIC=C;LC_TIME=en_GB.UTF-8;LC_COLLATE=en_GB.U TF-8;LC_MONETARY=en_GB.UTF-8;LC_MESSAGES=en_GB.UTF-8;LC_PAPER=en_GB.UTF- 8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_GB.UTF-8;LC_ID ENTIFICATION=C attached base packages: [1] "stats" "graphics" "grDevices" "utils" "datasets" "methods" [7] "base" other attached packages: DetectiV "1.1" I'm getting the following error message when plotting a quite complex graph: Error in axis(side = 2, at = c(min[i] - sptl, max[i] + sptl), labels = NA, : Error: X11 cannot allocate additional graphics colours. Consider using X11 with colortype="pseudo.cube" or "gray". The problem is I only get it under certain circumstances. I have some quite convoluted test code: n <- 82 mat <- matrix(rnorm(n*10), ncol=n) fcolors <- terrain.colors(n) image(z=mat, axes=FALSE) oneis <- 1 / ncol(mat) sptl <- oneis / 3 max <- 1:n * oneis min <- c(0, max[1:length(max)-1]) for (i in 1:n) { axis(side=2, at=c(min[i]-sptl,max[i]+sptl), labels=NA, line=0.9, lwd=3, lty=1, tick=TRUE, tck=0, col=fcolors[i],lend=2) } Now, this code works without error on values of n up to and including 81, but produces the error when it is 82: Error in axis(side = 2, at = c(min[i] - sptl, max[i] + sptl), labels = NA, : Error: X11 cannot allocate additional graphics colours. Consider using X11 with colortype="pseudo.cube" or "gray". The issue I have with it is that if I do a normal plot operation, I don't get the error! n <- 82 fcolors <- terrain.colors(n) plot(1:n,1:n, col=fcolors) Here the plot works, there are no errors and the colours come out fine. But when I use the axis command, in the more complex code above, I get an error. The real question I want to know is how can I enable R (or my OS) to plot a greater number of colours? I can plot 820 colours on R under windows, probably more, I just plucked 820 out of the air. I'm guessing this is because my windows graphics card can produce that many colours, whereas on linux I am limited by what x-windows can produce, but there must be some way of increasing the number of colours I can plot using R under linux...? Many thanks Mick The information contained in this message may be confide...{{dropped:14}} ______________________________________________ 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.