[R] x y plot with z coordinate scaling to a color value

[baptiste auguie]

Hi,

See also ?lattice::xyplot and ?ggplot2::geom_point , either one can do
it automatically.

HTH,

baptiste
On 19 May 2010 12:24, Jannis <bt_jannis at yahoo.de> wrote:
> Dears,
>
> before I start programming my own function I would like to ask you whether there is any function already available that lets me plot a x/y plot with the colors of the points determined by scaling a third variable z into a defined colorramp?
>
> Until now I am using a wild combination of functions to create a colorvector by hand, then calling
>
> plot(x,y,col=colors)
>
> and then using color.legend() from plotrix to add a colorbar. Is there anything where I can just call (for example)
>
> plot(x,y,z)
>
>
> and get a plot and a colorbar next to it?
>
> If not I have to program that myself because my current way involves a lot of steps and readjusting plotting regions.
>
>
> Thanks for your help!
>
> Jannis
>
>
>
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