[R] color ranges on a 2D plot

[John Kane]

There must be a better way but this will do it for
you.

x <- runif(100, 0, 1)
y <- runif(100, 0, 1)
z <- data.frame(x,y)

plot(subset(z, z$y >=.5), col="red", ylim=c(min(z$y),
max(z$y)), pch=16) 
points(subset(z, z$y <=.49), col="blue", pch=15)

--- dxc13 <dxc13 at health.state.ny.us> wrote:

> 
> useR's
> 
> I am trying to color the points on a scatter plot
> (code below) with two
> colors.  Red for values 0.5 -1.0 and blue for 0.0 -
> .49.  Does anyone know a
> easy way to do this?
> 
> x <- runif(100, 0, 1)
> y <- runif(100, 0, 1)
> plot(y ~ x, pch=16)
> 
> Thanks,
> dxc13
> -- 
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