[R] Scatterplot with the 3rd dimension = color?

[Kerry]

Beautiful! It works perfectly, thanks!

kb

On Oct 21, 7:42 am, Jim Lemon <j... at bitwrit.com.au> wrote:
> On 10/21/2011 06:25 AM, Kerry wrote:
>
> > Can someone please help me out with this? The ggplot2 suggestion works
> > great but I've spent a few days trying to figure out how to plot 2
> > variables with it and I'm stuck. Here's my example code:
> > ...
>
> Hi Kerry,
> This isn't ggplot2, but it may do what you want.
>
> library(plotrix)
> oldmar<-par(mar=c(5,4,4,4))
> plot(x,y,type="n")
> plotlim<-par("usr")
> rect(plotlim[1],plotlim[3],plotlim[2],plotlim[4],col="lightgray")
> grid(col="white")
> box()
> points(x,y,col=color.scale(z,c(1,0),0,c(0,1)),pch=19)
> points(x1,y2,col=color.scale(z3,1,c(0,1),0),pch=19)
> legendval1<-seq(min(z),max(z),length.out=5)
> color.legend(2.9,0.5,3.1,1.5,round(legendval1,1),align="rb",gradient="y",
>   rect.col=color.scale(legendval1,c(1,0),0,c(0,1)))
> legendval2<-seq(min(z3),max(z3),length.out=5)
> color.legend(2.9,-1.5,3.1,-0.5,round(legendval2,1),align="rb",gradient="y",
>   rect.col=color.scale(legendval2,c(1,1),c(0,1),0))
> par(xpd=TRUE)
> text(3,1.6,"z")
> text(3,-0.4,"z3")
> par(xpd=FALSE,oldmar)
>
> Jim
>
> ______________________________________________
> R-h... at r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.