[R] Unexpected line type in lattice plot key on pdf device

[Deepayan Sarkar]

On Wed, Jul 30, 2008 at 6:41 AM, G. Draisma <g.draisma at erasmusmc.nl> wrote:
> L.S.,
> With the code below,
> on the Windows screen the line types in the key show
>  as solid and dashed as in the graph,
> and in the pdf file they show
>  as solid in the key and solid and dashed in the graph.
> I would not expect that,
> but may be I get something wrong.
> Gerrit.
>
> -------
> library(lattice)
> # pdf("pietje.pdf")
> x<-0:10
> xyplot((x^0.5)+(x^0.75)~x,type="o",lty=c(1,2),
> auto.key=list(points=F,lines=T,columns=2, type="o",divide=1))
> # dev.off()
> -------

I'm surprised that you see differences between windows() and pdf(). In
any case, the correct call would be something like

xyplot((x^0.5)+(x^0.75)~x,type="o",
       par.settings = simpleTheme(lty=c(1,2)),
       auto.key=list(points=F,lines=T,columns=2, type="o",divide=1))