Anne Piotet wrote:
> Hi...it is probably trivial, but I do not know how to do the following:
> I want the output of a xy plot to be plotted in different colors according
to a given condition ...
> I want to plot temperature dependency of flow stress ; for some (rare)
occurencies I've got a special condition (chemical composition change) , and
I want these points to appear on the same graph...I do know how to change the
appearance of all the plots with the par() command or the points()...
>
> Thanks
> Anne
> [[alternative HTML version deleted]]
>
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I guess you are looking for something like:
y <- sample(1:10)
plot(1:10, y, col = ifelse(y > 5, "red", "black"))
Uwe Ligges