R help - Jul 2007 - Formatting panel borders in lattice package

Hello all --

I would like to thicken the borders between panels -- or more generally, 
all borders -- in a plot generated using lattice (specifically, 
levelplot).  Something similar perhaps to box() function in graphics. 
I haven't been successful in reviewing available documentation.

The problem stems from using a grayscale colorscheme that puts black 
colors near the borders, thus obscuring them.  Then, another alternative 
would be to somehow inject white space between panels.

In summary:
1) Does anybody know of a good way to increase the line thickness of 
borders in lattice, specifically those separating panels?
2) Does anybody know of a way to separate panels with whitespace?

Advice is very much appreciated.

Thanks,
Hil Lyons
Graduate Student
Univ. of Washington Dept of Statistics

On 7/10/07, Hil Lyons <hillyons at stat.washington.edu>
wrote:
> Hello all --
>
> I would like to thicken the borders between panels -- or more generally,
> all borders -- in a plot generated using lattice (specifically,
> levelplot).  Something similar perhaps to box() function in graphics.
> I haven't been successful in reviewing available documentation.
>
> The problem stems from using a grayscale colorscheme that puts black
> colors near the borders, thus obscuring them.  Then, another alternative
> would be to somehow inject white space between panels.
>
> In summary:
> 1) Does anybody know of a good way to increase the line thickness of
> borders in lattice, specifically those separating panels?
qqmath(~height | voice.part, singer, par.settings = list(axis.line list(lwd =
3)))

(or probably closer to what you want)

qqmath(~height | voice.part, singer, par.settings = list(axis.line list(lwd =
3)),
       scales = list(lwd = 1))
> 2) Does anybody know of a way to separate panels with whitespace?
qqmath(~height | voice.part, singer, between = list(x = 0.5, y = 0.5))

-Deepayan