[R] Plotting an array of histograms

(Ted Harding) Ted.Harding at nessie.mcc.ac.uk
Sat Jul 28 13:03:54 CEST 2001

On 27-Jul-01 Liaw, Andy wrote:
> Assuming x.df is the data frame with two columns, x (the value) and
> group (indicator for groups).  Try something like
> par(mfrow=c(5,5))  # ask for 5x5 array of plots, by row
> tapply(x.df$x, x.df$group, hist)
> Andy

Thanks to Andy for this suggestion, which basically works
in that it generates the requisite array of histograms.

And I'm also grateful for being thereby forced to look more
closely into this aspect of R programming, which was useful
and instructive!

However, using Andy's method I'm still having trouble getting
the histograms labelled etc as I would like, which is why I'm
also interested in Thomas Lumley's suggestion:

> Use the histogram function in the new 'lattice' package
>        -thomas

for which also thanks. However, where is it? It doesn't seem
to be part of R-1.3 which I have just downloaded, and I can't
seem to find any mention of "lattice" on CRAN.


E-Mail: (Ted Harding) <Ted.Harding at nessie.mcc.ac.uk>
Fax-to-email: +44 (0)870 167 1972
Date: 28-Jul-01                                       Time: 12:03:54
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