Thanks! The colorRampPalette() did just what I need. Tim
Tim Clark Department of Zoology University of Hawaii --- On Fri, 10/9/09, Barry Rowlingson <b.rowling...@lancaster.ac.uk> wrote: > From: Barry Rowlingson <b.rowling...@lancaster.ac.uk> > Subject: Re: [R] Satellite ocean color palette? > To: "Tim Clark" <mudiver1...@yahoo.com> > Cc: r-help@r-project.org > Date: Friday, October 9, 2009, 9:06 AM > On Fri, Oct 9, 2009 at 7:51 PM, Tim > Clark <mudiver1...@yahoo.com> > wrote: > > Dear List, > > > > Is there a color palette avaliable similar to what is > used in satellite ocean color imagery? I.e. a gradient > with blue on one end and red on the other, with yellow in > the middle? I have tried topo.colors(n) but that comes out > more yellow on the end. I am looking for something similar > to what is found on the CoastWatch web page: > > > > http://oceanwatch.pifsc.noaa.gov/imagery/GA2009281_2009282_sst_2D_eddy.jpg > > > > Thanks! > > You could build one yourself with the colorRamp function: > > satRampP = > colorRampPalette(c("black","blue","cyan","yellow","orange","red","black")) > > that looks roughly like the one in the jpg, but I'm not > sure about > the black at the far end...anyway, let's see: > > image(matrix(seq(0,1,len=100),100,1),col=satRampP(100)) > > Or you could try my colour schemes package: > > https://r-forge.r-project.org/projects/colourscheme/ > > Barry > ______________________________________________ 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.
