On Mon, 09-Jun-2014 at 08:33AM +0100, Prof Brian Ripley wrote: |> 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.
I don't see it making any difference at all. At one time I supposed that some clever inner workings rescaled everything to something more sensible for a plotting region that size, but that is not the case. > trellis.device(device = pdf, file = "Singers.pdf", height = 160/25.4, + width = 160/25.4) > grid::get.gpar()$fontsize [1] 12 > grid::gpar(fontsize = 8) $fontsize [1] 8 > grid::get.gpar()$fontsize [1] 12 > Evidently I missed something somewhere. Grid graphics is sometimes a bit too subtle for me. I know gpar() doesn't work exactly analogously to the way par() works. I can't find any examples in Paul's "R Graphics" book or Deepayan's "Lattice" book (but that might just be lack of searching skills). Then I tried putting it in the call to print.trellis: print(pik, plot.args = grid::gpar(fontsize = 8)) and in the bwplot() call similar to the way I'd done in panel functions with an argument called gp but I get no error message or any difference in my resulting plot. I know I can fiddle with trellis.par.get() and trellis.par.set() but that's a bit long-winded when it's so simple to do in base graphics. TA |> |> |> 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 -- ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. ___ Patrick Connolly {~._.~} Great minds discuss ideas _( Y )_ Average minds discuss events (:_~*~_:) Small minds discuss people (_)-(_) ..... Eleanor Roosevelt ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. ______________________________________________ R-help@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.
