[R] Separate ablines in lattice panels

[Doran, Harold]

Thank you, Bert. The help page doesn't have a usage example and I can't seem to find one via google. Do you, or anyone else, have sample code?

> -----Original Message-----
> From: Bert Gunter [mailto:gunter.berton at gene.com]
> Sent: Tuesday, January 17, 2012 1:07 PM
> To: Doran, Harold
> Cc: r-help at r-project.org
> Subject: Re: [R] Separate ablines in lattice panels
> 
> ?panel.number
> 
> This tells you what panel you're in and you can use that to determine
> which line to draw.
> 
> -- Bert
> 
> On Tue, Jan 17, 2012 at 9:59 AM, Doran, Harold <HDoran at air.org> wrote:
> > Searched archives and found some old email threads on the topic. But mot
> exactly what I think I need. Suppose I have a datafile such as tmp.
> >
> > tmp <- data.frame(var1 = c(rnorm(1000), rnorm(1000, 1, 1)), var2 = gl(2,
> 1000))
> >
> > I'd like a plot similar to the one below, but with an abline of v=0 in the
> lower panel and v=1 in the upper panel. Code below creates two lines in each
> panel, not quite sure how to separate them by panel.
> >
> > densityplot(~ var1|var2, tmp,
> >                              type = c('g', 'l'),
> >                              layout = c(1,2),
> >                                             panel = function(x, ...){
> >                                             panel.densityplot(x, ...)
> >                                             panel.abline(v = c(0,1))
> >                                             }
> > )
> >
> > Thank you
> > Harold
> >
> >        [[alternative HTML version deleted]]
> >
> > ______________________________________________
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> > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> 
> 
> 
> --
> 
> Bert Gunter
> Genentech Nonclinical Biostatistics
> 
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