[R] split.screen problem and segments in figure margin

[Uwe Ligges]

Unternährer Thomas, uth wrote:
> hi,
>  
> two questions...
>  
> 1. what happens with points()?
>     after the split.screen function points() start not at x = 1 (at x = - something)
> 
> graphics.off()
> x11()
> split.screen(c(3, 1))
> split.screen(c(2, 1), 1)
> 
> screen(3)
> plot(dat, type = "n")
> screen(4)
> plot(dat, type = "n")
> screen(2)
> plot(dat, type = "n")
> 
> dat <- rnorm(1000)
> 
> for (i in 1:length(dat)){
>   screen(3)
>   points(i, dat[i])
>   screen(4)
>   points(i, dat[i])
>   screen(2)
>   points(i, dat[i])
> }
> 
> close.screen(all = TRUE)
> 
> I was searching the mail-archives and found the same question but no answers.
> Can somebody help me?

This is a bug, already submitted as bug report PR#2069.
There are a couple of other unfixed bugs related to split.screen(), so 
I'd recommend to use layout() or par(mfrow = ..) in your case, or even 
better: consider to contribute a bugfix.

>  
> 2. Can I draw segments() in the figure margin (not in the plot region).... or can I split my axis(2,...) in 3 with a gap between them? 

You can by setting par(xpd = TRUE). See ?par for details.

Uwe Ligges

>  
> thanks for any help
>  
> Thomas
> 
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