Sean
If you want two bars for each bin then that sounds more like barplot() could be
used. I know you can tightly control the distance between bars and the width
of the bars, and so with a little coding you could probably use that.
Mick
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of Sean Davis
Sent: Wed 2/2/2005 1:42 PM
To: r-help
Cc:
Subject: [R] Combining two histograms
I have data like:
a <- rnorm(20000)
b <- rep(FALSE,20000)
b[sample(1:20000,15000)] <- TRUE
Using Lattice graphics, I can produce two side-by-side histograms quite
easily by:
histogram(a | b)
However, I would like to produce a "single" histogram with two bars
within each bin, one for each group, as the groups are in reality very
slightly different from each other. The difference isn't evident
unless one "overlays" the two histograms in some manner.
Thanks,
Sean
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