[R] How to plot with different colours

[Jim Lemon]

Carlos Morales wrote:

> Hello everyone,
>  
> I'm trying to plot 3600 points and my idea is if this value is higher than 0.35 then this point must appear in green colour, if it's smaller than -0.35 then values must appear in red and if values are between -0.35 and 0.35 they must be in yellow. I'm thinking and I'm trying many things but I don't achieve it. Any idea?.
Hi Carlos,
This may be what you want:

zeep<-rnorm(20)
zeepcut<-as.numeric(cut(zeep,c(-4,-0.35,0.35,4)))
plot(zeepcut,col=c("red","yellow","green")[zeepcut])

Jim