RE: [R] Ranking within a classification variable.

From: Rolf Turner <rolf_at_math.unb.ca>
Date: Wed 20 Apr 2005 - 02:30:21 EST


In response to my question Andy Liaw wrote:

> Here's one way:

        <snip>

> > dat$rank <- with(dat, ave(x, f, FUN=rank))

        <snip>

> Don't know how this rates on the slick-quick-sexy scale...

Thanks Andy. That's definitely a 10 on the slick-quick-sexy scale. I (blush!) didn't know about ``ave()''.

                        cheers,

                                Rolf



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