R help - May 2013 - Lattice, ggplot, and pointsize

Hi!

When inserting R plots into a document using odfWeave, I fought for a
while to get Lattice plots use the same text size as base plots. I
eventually discovered that specifying a point size via e.g.
svg(pointsize=10) has no effect on Lattice plots. One needs to adjust
the size manually via:
trellis.par.set(fontsize=list(text=10, points=8))

This is also developed for both Lattice and ggplot2 by this blog post:
http://gforge.se/2013/03/exporting-plain-lattice-or-ggplot/

So I am wondering whether is a by-design limitation or whether this
could be improved. I find it very useful to be able to adapt text size
to the output device instead of changing plotting parameters for each
plotting system (especially when you change the resolution of PNG
output, or move from one output device to another).

Thanks in advance

Hi

See par.settings in xyplot

Things are also controlled by
trellis.par.get()
to see values
trellis.par.set()

eg
xyplot(~Freq|Year, data = sheep2,
            groups   = farm,
            par.settings = list(strip.background = list(col =
"transparent"),
                                axis.text = list(cex = 0.75),
                                par.xlab.text = list(cex = 0.80),
                                par.ylab.text = list(cex = 0.80)) , ...)

HTH

Duncan

Duncan Mackay
Department of Agronomy and Soil Science
University of New England
Armidale NSW 2351
Email: home: mackay at northnet.com.au



At 21:18 21/05/2013, you wrote:
>Hi!
>
>When inserting R plots into a document using odfWeave, I fought for a
>while to get Lattice plots use the same text size as base plots. I
>eventually discovered that specifying a point size via e.g.
>svg(pointsize=10) has no effect on Lattice plots. One needs to adjust
>the size manually via:
>trellis.par.set(fontsize=list(text=10, points=8))
>
>This is also developed for both Lattice and ggplot2 by this blog post:
>http://gforge.se/2013/03/exporting-plain-lattice-or-ggplot/
>
>So I am wondering whether is a by-design limitation or whether this
>could be improved. I find it very useful to be able to adapt text size
>to the output device instead of changing plotting parameters for each
>plotting system (especially when you change the resolution of PNG
>output, or move from one output device to another).
>
>Thanks in advance
>
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