[R] print.trellis draw.in - plaintext (gmail mishap)

[Mark Connolly]

That helped.  I continued to have issues with

draw.in=vplayout(2,2)$name


(I guess I still don't understand it use), but the following positions 
the plot on the grid where I want it.

grid.newpage()
pushViewport(viewport(layout=grid.layout(2,2)))
vp <- vplayout(2,2)

pushViewport(vp)
print(p,newpage=FALSE)
upViewport()

The reason the ggplot instances just worked is that the ggplot2 package 
is doing the viewport traversal for me in ggplot2::print.ggplot.


Thanks for the help!
Mark


On 07/12/2010 07:29 PM, Felix Andrews wrote:
> The problem is that you have not pushed your viewport so it doesn't
> exist in the plot. (You only pushed the layout viewport).
>
>    
>> grid.ls(viewports = TRUE)
>>      
> ROOT
>    GRID.VP.82
>
> Try this:
>
> vp<- vplayout(2,2)
> pushViewport(vp)
> upViewport()
> grid.ls(viewports = TRUE)
> #ROOT
> #  GRID.VP.82
> #    GRID.VP.86
> print(p, newpage = FALSE, draw.in = vp$name)
>
>
> -Felix
>
>
> On 13 July 2010 01:22, Mark Connolly<wmconnol at ncsu.edu>  wrote:
>    
>> require("grid")
>> require("lattice")
>> fred = data.frame(x=1:5,y=runif(5))
>> vplayout<- function (x,y) viewport(layout.pos.row=x, layout.pos.col=y)
>> grid.newpage()
>> pushViewport(viewport(layout=grid.layout(2,2)))
>> p = xyplot(y~x,fred)
>> print(  p,newpage=FALSE,draw.in=vplayout(2,2)$name)
>>
>>
>> On Mon, Jul 12, 2010 at 8:58 AM, Felix Andrews<felix at nfrac.org>  wrote:
>>      
>>>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>>>> and provide commented, minimal, self-contained, reproducible code.
>>>>          
>>> Yes, please, reproducible code.
>>>
>>>
>>>
>>> On 10 July 2010 00:49, Mark Connolly<wmconnol at ncsu.edu>  wrote:
>>>        
>>>> I am attempting to plot a trellis object on a grid.
>>>>
>>>> vplayout = viewport(layout.pos.row=x, layout.pos.col=y)
>>>>
>>>> grid.newpage()
>>>> pushViewport(viewport(layout=grid.layout(2,2)))
>>>>
>>>> g1 = ggplot() ...
>>>> g2 = ggplot() ...
>>>> g3 = ggplot() ...
>>>> p = xyplot() ...
>>>>
>>>> # works as expected
>>>> print(g1, vp=vplayout(1,1))
>>>> print(g2, vp=vplayout(1,2))
>>>> print(g3, vp=vplayout(2,1))
>>>>
>>>> # does not work
>>>> print(  p,
>>>>          newpage=FALSE,
>>>>          draw.in=vplayout(2,2)$name)
>>>>
>>>> Error in grid.Call.graphics("L_downviewport", name$name, strict) :
>>>>   Viewport 'GRID.VP.112' was not found
>>>>
>>>>
>>>> What am I doing wrong?
>>>>
>>>> Thanks!
>>>>
>>>> ______________________________________________
>>>> R-help at r-project.org mailing list
>>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>>>> and provide commented, minimal, self-contained, reproducible code.
>>>>
>>>>          
>>>
>>>
>>> --
>>> Felix Andrews / 安福立
>>> http://www.neurofractal.org/felix/
>>>
>>>        
>>      
>
>
>