Thank you Deepayan.

Still on lattice, can the same overlap function be applied to categorical
variable plot such as barchart? I mean, can I create an overlap barchart
plot?

On Tue, Oct 28, 2008 at 5:41 PM, Deepayan Sarkar
<deepayan.sarkar@gmail.com>wrote:

> On Tue, Oct 28, 2008 at 4:31 PM, Ferry <fmi.mlist@gmail.com> wrote:
> > Dear R users,
> >
> > Is it possible to have an overlap histogram plot? For example:
> >
> > stuff <- data.frame(Mode = c("Land", "Air"), AgeGroup = c("Young",
> "Adult",
> > "Old"), Value = sample(1:300))
> > histogram( ~Value | AgeGroup * Mode, data = stuff, auto.key = TRUE)
> >
> > Instead of having 2 * 3 panel, I want to have just 3 panel, overlapping
> the
> > "Mode" into the same panel.
> >
> > I tried the following:
> > histogram( ~Value | AgeGroup, data = stuff, groups = Mode, auto.key =
> TRUE)
> >
> > but I think it gave me incorrect result.
>
> See
>
> http://www.mail-archive.com/r-help@stat.math.ethz.ch/msg84387.html
>
> but I would recommend use of densityplot() instead:
>
> densityplot( ~Value | AgeGroup, data = stuff, groups = Mode, auto.key =
> TRUE)
>
> -Deepayan
>

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