Hi:

On Wed, Aug 25, 2010 at 11:28 AM, Greg Snow <Greg.Snow@imail.org> wrote:

> Using the barplot function in base graphics you just set space=0, but that
> function does not have a box.ratio argument which would imply that you are
> using something else.  If you let us know which function (and which package
> it is in) then it is easier (possible) for us to help you, even better is to
> give the information asked for at the bottom of every post and the posting
> guide.
>
>
It looks like he's using barchart() in lattice, which does have a box.ratio
argument.

> --
> Gregory (Greg) L. Snow Ph.D.
> Statistical Data Center
> Intermountain Healthcare
> greg.snow@imail.org
> 801.408.8111
>
>
> > -----Original Message-----
> > From: r-help-bounces@r-project.org [mailto:r-help-bounces@r-
> > project.org] On Behalf Of Jonathan Greenberg
> > Sent: Tuesday, August 24, 2010 8:21 PM
> > To: r-help
> > Subject: [R] Removing inter-bar spaces in barchart
> >
> > Rhelpers:
> >
> > I'm trying to make a barchart of a 2-group dataset
> > (barchart(x~y,data=data,groups=z,horizontal=FALSE)).  My problem is
> > that I can't, for the life of me, seem to get rid of the inter-bar
> > space -- box.ratio set to 10000 doesn't do much.  Any ideas?  I'd
> > ideally want zero space between the bars.  Thanks!
>

I'm more interested in why you'd 'ideally want zero space between
the bars'. By default, bar chart functions in R have spaces between
bars because the bars represent different categories of a
discrete/factor variable and the space is a visual device meant to
connote to the viewer that the categories are not to be interpreted
as an underlying continuum. In contrast, there are no spaces in
between bars of a histogram precisely because the x-scale is meant
to be continuous. Since you're using barchart(), why do you want to
remove the space between bars?

Cheers,
Dennis

>
> > --j
> >
> > --
> > Jonathan A. Greenberg, PhD
> > Assistant Project Scientist
> > Center for Spatial Technologies and Remote Sensing (CSTARS)
> > Department of Land, Air and Water Resources
> > University of California, Davis
> > One Shields Avenue
> > Davis, CA 95616
> > Phone: 415-763-5476
> > AIM: jgrn307, MSN: jgrn307@hotmail.com, Gchat: jgrn307
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