[R] Scatterplot with the 3rd dimension = color?
kbrownk at gmail.com
Sun Oct 2 23:12:33 CEST 2011
Yes, perfect! This I can work with.
On Oct 2, 3:55 pm, Duncan Murdoch <murdoch.dun... at gmail.com> wrote:
> On 11-10-02 1:11 PM, Kerry wrote:
> > I have 3 columns of data and want to plot each row as a point in a
> > scatter plot and want one column to be represented as a color gradient
> > (e.g. larger values being more red). Anyone know the command or
> > package for this?
> It's not a particularly effective display, but here's how to do it. Use
> rainbow(101) in place of rev(heat.colors(101)) if you like.
> x <- rnorm(10)
> y <- rnorm(10)
> z <- rnorm(10)
> colors <- rev(heat.colors(101))
> zcolor <- colors[(z - min(z))/diff(range(z))*100 + 1]
> Duncan Murdoch
> 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.
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