Dear Rolf and Binabina perhaps this is of use to some:
Colour for Presentation Graphics. Ross Ihaka. www.stat.auckland.ac.nz/~ihaka/colour/color.pdf Choosing Color Palettes for Statistical Graphics Achim Zeileis and Kurt Hornik. eeyore.ucdavis.edu/stat250/epub-wu-01_abd.pdf Best wishes Wolfgang ------------------------------------------------------------------ Wolfgang Huber EBI/EMBL Cambridge UK http://www.ebi.ac.uk/huber Turner ha scritto: > On 12/08/2007, at 1:22 PM, zubin wrote: > >> Hello! >> >> I am using the deldir package to visualize my data, pretty neat. >> However, i need to fill the colors using polycol =, fill with colors >> like a heatmap - more of a gradient fill. The only colors i get are >> very blocky - how do i assign the correct colors for a gradient, >> even a >> grayscale? i tried the chart of R colors, using 200 numbers for >> grayscale but not getting them. The polycol = colors the cells in the >> tesselation with the value a specific vector for color. > > <snip> > > I'm sorry, but I can't help here. I've been struggling with colors, > in a different > context, recently myself, and I'm unclear as to how they work. There > are a bunch > of functions --- palette(), colorRamp(), colorRampPalette() that > probably relate > to what you want to do, but I'm not sure just *how* they relate. > > With a bit of luck, someone cleverer than I will come to your rescue. > > cheers, > > Rolf Turner > > ###################################################################### > Attention:\ This e-mail message is privileged and confidenti...{{dropped}} > > ______________________________________________ > R-help@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 > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@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 and provide commented, minimal, self-contained, reproducible code.