Hi, Try the dichromat package (also dichromat_pal in the scales package).
HTH, baptiste On 3 November 2011 10:26, Max Kuhn <mxk...@gmail.com> wrote: > Everyone, > > I'm working with scatter plots with different colored symbols (via > lattice). I'm currently using these colors for points and lines: > > col1 <- c(rgb(1, 0, 0), rgb(0, 0, 1), > rgb(0, 1, 0), > rgb(0.55482458, 0.40350876, 0.04166666), > rgb(0, 0, 0)) > plot(seq(along = col1), pch = 16, col = col1, cex = 1.5) > > I'm also using these with transparency (alpha between .5-.8 depending > on the number of points). > > I'd like to make sure that these colors are interpretable by the color > bind. Doing a little looking around, this might be a good palette: > > col2 <- c(rgb(0, 0.4470588, 0.6980392), > rgb(0.8352941, 0.3686275, 0, ), > rgb(0.8000000, 0.4745098, 0.6549020), > rgb(0.1686275, 0.6235294, 0.4705882), > rgb(0.9019608, 0.6235294, 0.0000000)) > > plot(seq(along = col2), pch = 16, col = col2, cex = 1.5) > > but to be honest, I'd like to use something a little more vibrant. > > First, can anyone verify that these the colors in col2 are > differentiable to someone who is color blind? > > Second, are there any other specific palettes that can be recommended? > How do the RColorBrewer palettes rate in this respect? > > Thanks, > > Max > > ______________________________________________ > 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. > ______________________________________________ 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.