Re: [R] colour palette for positive/negative range

From: Achim Zeileis <Achim.Zeileis_at_uibk.ac.at>
Date: Fri, 18 Mar 2011 16:47:33 +0100 (CET)

On Fri, 18 Mar 2011, Frank Schwach 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?

See the function diverge_hcl() in the package "colorspace" which provides a wide variety of HCL-based color palettes. These are similar in spirit to the ColorBrewer palettes but were designed to provide more fine control. See the examples and the associated CSDA paper for more details.

Best,
Z

> 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_at_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_at_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. Received on Fri 18 Mar 2011 - 16:00:14 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Fri 18 Mar 2011 - 16:30:23 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive