Some ideas for you... RedWhiteBlue <- colorRampPalette(c("firebrick","white","#023868")) RedGrayBlue <- colorRampPalette(c("firebrick", "lightgray", "#023868")) RedWhiteBlue2 <- colorRampPalette(c("red","white","blue")) RedGrayBlue2 <- colorRampPalette(c("red", "lightgray", "blue")) pie(rep(1,21), col=RedWhiteBlue(21))
Kevin Wright On Fri, Mar 18, 2011 at 10:37 AM, Frank Schwach <f...@sanger.ac.uk> wrote: > Hi, > > I'm plotting a heatmap with values ranging from -10 to +10 and I would > like the negative values to show up in shades of blue and the positive > ones in shadea of red. Basically, I want exactly what the RColorBrewer > palette RdBu does but with more of a gradual change (the RdBu can only > give me 11 distinct colours). Any suggestions? > > Thanks! > > Frank > > > > > -- > The Wellcome Trust Sanger Institute is operated by Genome Research > Limited, a charity registered in England with number 1021457 and a > company registered in England with number 2742969, whose registered > office is 215 Euston Road, London, NW1 2BE. > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.