On Apr 4, 2011, at 1:27 PM, Marius Hofert wrote:
Dear David,
do you know how to get plotmath-like symbols in both rows?
I tried s.th. like:
lab <- expression(paste(alpha==1, ", ", beta==2, sep=""))
xlab <- substitute(expression( atop(lab==lab., bold(foo)) ),
list(lab.=lab))
xyplot(0 ~ 0, xlab = xlab)
I _did_ have plotmath functions in both rows: But here is your solution:
xyplot(0 ~ 0, xlab =
expression( atop(paste(alpha==1, " ", beta==2), bold(bla) )) )
)
Note that `paste` in plotmath is different than `paste` in regular R.
It has no `sep` argument. I did try both substitute and bquote on you
externally expression, but lattice seems to be doing some non-
standard evaluation and I never got it to "work". Using what I thought
_should_ work, does work with `plot`:
> x=1;y=2
> plot(0 ~ 0, xlab = bquote( atop(alpha==.(x)*","~beta==.(y),
bold(foo) ) )
+ )
But the same expression throws an error with xyplot:
> x=1;y=2
> xyplot(0 ~ 0, xlab = bquote( atop(alpha==.(x)*","~beta==.(y),
bold(foo) ) )
+ )
Error in trellis.skeleton(formula = 0 ~ 0, cond = list(1L), aspect =
"fill", :
could not find function "atop"
--
David.
Cheers,
Marius
On 2011-04-04, at 18:59 , David Winsemius wrote:
On Apr 4, 2011, at 12:45 PM, Marius Hofert wrote:
Dear David,
I intended to use another x-label. But your suggestion brings me
to the idea of just using a two-line xlab, so s.th. like
print(xyplot(0 ~ 0, xlab.top = "This title is now 'centered' for
the human's eye", xlab = "but subtitles are _now_ centered\nbla",
scales = list(alternating = c(1,1), tck = c(1,0))))
And if you wanted different fontface (underline, italic or bold)
then you could use plotmath expressions:
xyplot(0 ~ 0, xlab.top = "This title is now 'centered' for the
human's eye", xlab =
expression( atop(but~subtitles2~are~underline(now)~centered,
bold(bla) )), scales = list(alternating = c(1,1), tck = c(1,0)))
--
David.
Thanks!
Cheers,
Marius
On 2011-04-04, at 16:47 , David Winsemius wrote:
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
David Winsemius, MD
West Hartford, CT
David Winsemius, MD
West Hartford, CT
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