Evgeniy Kachalin wrote:
> Hello, dear participants!
>
> Could you tip me, is there any simple and nice way to build scatter-plot
> for three different types of data (, and o and * - signs, for example)
> with legend.
>
> Now i can guess only that way:
>
> plot(x~y,data=subset(mydata,factor1=='1'), pch='.',col='blue')
> points(x~y,data=subset(mydata,factor1=='2'), pch='*',col='green')
> points(.... etc
>
> What is the simple and nice way?
> Thank you very much for your kindness and help.
>
Example:
with(iris,
plot(Sepal.Length, Sepal.Width, pch = as.integer(Species)))
with(iris,
legend(7, 4.4, legend = unique(as.character(Species)),
pch = unique(as.integer(Species))))
Uwe Ligges
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