[R] Removing inter-bar spaces in barchart

[David Winsemius]

On Aug 24, 2010, at 10:20 PM, Jonathan Greenberg wrote:

> 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!

You didn't provide any data (nor did you illustrate with one of the  
available datasets that are used in examples.)

Compare these two outputs:

barchart(yield ~ year, data = barley,
          groups = variety,   ylab = "Barley Yield (bushels/acre)",
         )

barchart(yield ~ variety, data = barley,
          groups = year,   ylab = "Barley Yield (bushels/acre)",
         )

... and notice that the variables in the "group" have no separation of  
their bars whereas the rhs variables do. This is the opposite of what  
I expected, so perhaps you think as I did and reversing the roles  
of"y" and "z"  might help?

-- 

David Winsemius, MD
West Hartford, CT