Hi,

Are your variable numerical? If so, you can do what you want by just define
the color as the variable (col = variable3). Colors in R can be defined by
numbers, so each number will corresponds to one color.

In example:

plot( iris[, 1], iris[, 2], col = iris[,3])


Regards



2009/3/18 Josh <tejalonline@gmail.com>

> Hi,
> I have three related variables (vectors) and would like to see their
> distribution on a 2D plot of first two variables, having colors
> proportional
> to the values from third variable. I could have done so by passing 3rd
> variable to the color palette, but this would disrupt the relationship
> information among them.
> I am sure there has to be some way to do it, but I don't know how. Any help
> in this direction will be appreciated.
>
> thanks
> jo
>
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