[R] Satellite ocean color palette?
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! Tim Tim Clark Department of Zoology University of Hawaii __ 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.
Re: [R] Satellite ocean color palette?
See ?colorRampPallete On Fri, Oct 9, 2009 at 3:51 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! Tim Tim Clark Department of Zoology University of Hawaii __ 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. -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O __ 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.
Re: [R] Satellite ocean color palette?
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.
Re: [R] Satellite ocean color palette?
On Fri, 2009-10-09 at 11:51 -0700, Tim Clark 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! Tim Tim Clark Department of Zoology University of Hawaii Tim, You can make a palette in R, using colorRampPalette, look this example Satelite.Pallete - colorRampPalette(c(blue3,cyan,aquamarine,yellow,orange,red)) require(fields) image.plot(volcano, col = Satelite.Pallete(500), legend.lab=Scale) contour(volcano, levels = seq(90, 200, by = 5), add = TRUE) -- Bernardo Rangel Tura, M.D,MPH,Ph.D National Institute of Cardiology Brazil __ 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.
Re: [R] Satellite ocean color palette?
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.
Re: [R] Satellite ocean color palette?
tim.colors() in library fields On Fri, Oct 9, 2009 at 2:51 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! Tim Tim Clark Department of Zoology University of Hawaii __ 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.
