Achim Zeileis <Achim.Zeileis <at> wu-wien.ac.at> writes: > However, I guess that it will be hard to select a qualitative > palette with 18 distinct colors...I couldn't imagine a plot where it would > be sufficiently easy for humans to decode that. But maybe you can combine > that with some sequential or diverging palette or so?
I slightly disagree here. In many cases, in color-coded surface plots, you do not want to attribute the colors to, let's say, altitudes, but rather use the color transitions as contour lines without explicitly drawing contours. You could also use continuous colors, but it is amazing how this fails, while something like 25 colors looks good. Dieter ______________________________________________ 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.
