Re: [R] lattice: how to "center" a subtitle?

From: David Winsemius <dwinsemius_at_comcast.net>
Date: Mon, 04 Apr 2011 10:47:02 -0400

On Apr 4, 2011, at 7:39 AM, Marius Hofert wrote:

> Dear expeRts,
>
> I recently asked for a real "centered" title (see, e.g., http://tolstoy.newcastle.edu.au/R/e13/help/11/01/0135.html)
> .
> A nice solution (from Deepayan Sarkar) is to use "xlab.top" instead
> of "main":
>
> library(lattice)
> trellis.device("pdf")
> print(xyplot(0 ~ 0, xlab.top = "This title is now 'centered' for the
> human's eye", sub = "but subtitles are not centered", scales =
> list(alternating = c(1,1), tck = c(1,0))))
> dev.off()

library(lattice)
trellis.device("pdf")
print(xyplot(0 ~ 0, xlab.top = "This title is now 'centered' for the human's eye", xlab = "but subtitles are _now_ centered", scales = list(alternating = c(1,1), tck = c(1,0)))) dev.off()

(I realize that those are not really subtitles by a 'lab', but that appears acceptable in your current test case.)

>
> My question is whether there is something similar for *sub*titles
> [so something like "xlab.bottom"]? As you can see from the plot, the
> subtitle does not seem to be "centered" for the human's eye. I would
> like to center it according to the x-axis label.
>

David Winsemius, MD
West Hartford, CT



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