[R] 2d color coded line plot

baptiste auguie baptiste.auguie at googlemail.com
Fri Aug 21 15:00:58 CEST 2009

geom_path in ggplot2 is another option, see two examples on this page:




2009/8/21 Jim Lemon <jim at bitwrit.com.au>:
> Gonçalo Graça wrote:
>> Hi! I'm not experienced very experienced with R and i'm looking for a way
>> doing plots like in this example
>> http://www.mathworks.de/matlabcentral/fx_files/23566/2/color_line3.png,
>> which basically it is a 2d plot in which the 3rd dimension (variable) is
>> color coded. I have only seen elsewhere that it is possible to color code
>> dots in a scatter plot and I tried it with success although I  I didn't find
>> a way of including the color bar has legend to the plot.
>> I wonder if any one can give me some hint on this.
> Hi Goncalo,
> Have a look at the color.scale.line, color.scale and smoothColor functions
> in the plotrix package. See color.legend for the "color bar".
> Jim
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Baptiste Auguié

School of Physics
University of Exeter
Stocker Road,
Exeter, Devon,


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