Here are some misc comments on graphics.
* I am not sure whether `adj' works correctly. When using e.g.
title(sub = "SUBTITLE", adj = 0)
shouldn't the subtitle appear on the very left? It seems that
justification is done off the middle of the plot window.
* S barplot has argument `horiz', R does not.
* More importantly, the barplot() argument `space' is treated
differently under R and S.
S has,
the space (as a fraction of the average bar width) that
should be left before each bar.
This may be given as a single number or one number per bar.
If `beside' is `TRUE', `space' may be specified by 2 numbers
where the first is the space between bars in a set,
and the second is the space between sets.
R has,
the relative amount of space between the bars or groups of
bars. The width of a bar (or group of bars) plus the value of
space is one.
The S behavior is perhaps more useful, as it allows to have groups of
bars.
* The documentation for title() does not mention `sub'
-k
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