I am using the lattice histogram
histogram( ~ base_var | treatment, data=mydataset )
In my dataset, the histogram produces (as expected) two histograms,
each corresponding to one of the two treatments.
I would like to have the histogram for one treatment to have, say, red
bars, the histogram for the second treatment, to have blue bars.
I tried the ",col=" option, but that colors individual bars rather than
the histogram.
Thanks in advance for suggestions.
Chris Barker, Ph.D.
Statistical Consultant
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