[R] specify lattice black-and-white theme

[Deepayan Sarkar]

On Wed, Aug 5, 2009 at 6:27 PM, Jacob Wegelin<jacob.wegelin at gmail.com> wrote:
> Is there a simple way to specify a theme or trellis (lattice) parameters so
> that, in a multipanel (conditioned) plot, there is no color and in the
> strips there is no shading? This is the effect achieved on page 124 of
> Deepayan Sarkar's "Lattice" (figure 7.2).
> I managed to trick lattice into making a grayscale plot on my interactive
> display as follows:
>
>> graphics.off()
>> postscript("junk.ps")
>> mystuff<-trellis.par.get()
>> graphics.off()
>> trellis.par.set(mystuff)
>
> Then when I made a multipanel (conditioned) plot, at least there was no
> color, but the strips contained gray shading. Is this the "black and white
> theme"?

Yes, and an easier way to start using it is

trellis.device(color = FALSE)

> If one wants strips with white background (no shading), as in the
> example cited above, must one go deeper into the details of the settings or
> write one's own panel or strip function?

If you want to do this for all your lattice plots, here's something
you can execute on startup:

lattice.options(default.theme = modifyList(standard.theme(color =
FALSE), list(strip.background = list(col = "transparent"))))

-Deepayan