The issue here is not trellis.device.
You are using lattice plots (without mentioning lattice), which are
based on package 'grid' and so using the grid sub-system of a device.
That sub-system does not use the 'pointsize' of the device as its
initial font size. So you need to use
grid::gpar(fontsize = 28)
If I call that after opening the device I get what I guess you expected.
On 09/06/2014 07:54, Patrick Connolly wrote:
How is the pointsize set in trellis.devices?
From my reading of the trellis.device help file, I understood that the
pointsize arg would be referenced to the call to the pdf function.
So I set up a trellis pdf device as so:
trellis.device(device = pdf, file = "Singers.pdf", height = 160/25.4,
width = 160/25.4, pointsize = 28)
A base R graphics plot works as I'd expected.
plot(1:10, 50:59) # silly plot with huge plotting characters and letters
However, pointsize is ignored in trellis plots;
pik <- bwplot(voice.part ~ height, data = singer)# pointsize ignored
print(pik)
dev.off()
There are many trellis cex-type settings, but FWIU they're all
relative to the default size. My question is: How do I set that
default?
R version 3.0.2 (2013-09-25)
Platform: i686-pc-linux-gnu (32-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] grDevices utils stats graphics methods base
other attached packages:
[1] RColorBrewer_1.0-5 lattice_0.20-24
loaded via a namespace (and not attached):
[1] grid_3.0.2 plyr_1.8 tools_3.0.2
I've tried with R-3.1.0 on another machine so I don't think the
problem is with an old version.
I doubt it has much to do with pdf specifically. Attempts to use png,
bitmap, postscript devices all produce equivalent results.
(Here's all the example code uninterrupted:)
trellis.device(device = pdf, file = "Singers.pdf", height = 160/25.4,
width = 160/25.4, pointsize = 28)
plot(1:10, 50:59) # silly plot with huge plotting characters and letters
pik <- bwplot(voice.part ~ height, data = singer)# pointsize ignored
print(pik)
dev.off()
TIA
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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