[R] Understanding lattice barchart() display

[Rich Shepard]

On Tue, 23 Oct 2012, Bert Gunter wrote:

> I believe you are misunderstanding what a barchart is (or maybe I do,
> since I never use 'em). I believe that there should be one quant value for
> each tclass and stream, and you have several.

Bert,

   My first attempt at using barchart()

> ?panel.barchart
> is the place to look for documentation for details of any lattice
> display. Note especially the "horizontal" argument details (also in
> ?barchart).

   I looked at the panel section in ?barchart but did not gain any insights
into why there are segments in the bars.

> You may also wish to consider ?bwplot instead.

   Sure. I thought of that, too. Those I've used before.

Thanks,

Rich