[R] lattice: strange behavior (?) when using trellis.device(color=FALSE)

[Peter Ehlers]

On 2010-11-27 03:31, Marius Hofert wrote:
> Hi,
>
> I get a warning () using
>
> xyplot.<- function(u) {
> 	BW.theme<-
> 	    list(strip.background = list(col = "gray90"),
> 	         strip.shingle = list(col=c("gray75")),
> 	         layout.heights = list(strip = c(1,1)),
> 	         axis.text = list(cex = 0.8),
> 	         superpose.symbol=list(col=1, pch=20)
> 	         )
> 	xyplot(u[,2]~u[,1],par.settings=BW.theme)
> }
> U<- matrix(runif(20),ncol=2)
> b<- xyplot.(U)
> b
>
> and it does not change the color. Further, would such an approach change all colors (including plot symbols, text, background, etc.)?
>
> But it's funny to see because I played around with par.settings as well. I tried...
>
> library(lattice)
> xyplot.<- function(u) {
> 	xyplot(u[,2]~u[,1],par.settings=list(color=FALSE))
> }
> U<- matrix(runif(20),ncol=2)
> b<- xyplot.(U)
> b
>
> ... but it didn't work :-(
>

  xyplot. <- function(u) {
  	xyplot(u[,2] ~ u[,1],
         par.settings = standard.theme(color=FALSE))
  }

see ?xyplot.ts

Peter Ehlers

> Cheers,
>
> Marius
>
>
>
> On 2010-11-27, at 12:00 , ottorino wrote:
>
>> Il giorno sab, 27/11/2010 alle 00.35 +0100, Marius Hofert ha scritto:
>>> The reason why I would like to use trellis.device() within a function
>>> is that
>>> the plot contains a panel.function which contains many calls to
>>> panel.xyplot()
>>> and I do not want to write "col = 1" (e.g.) all the time...
>>
>> Why not to use a theme like
>>
>> BW.theme<-
>>     list(strip.background = list(col = "gray90"),
>>          strip.shingle = list(col=c("gray75")),
>>          layout.heights = list(strip = c(1,1)),
>>          axis.text = list(cex = 0.8),
>>          superpose.symbol=list(col=1, pch=20)
>>          )
>> xyplot(V1~V2, par.settings = BW.theme)
>>
>>
>>
>
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