Respecting ggplot2 element_text font family

[Alastair Andrew]

Hi,

Is there anyway to get RTikzDevice to use the same font face as you've
specified in family argument of element_text?

For example:

library(ggplot2)
p <- ggplot(diamonds, aes(carat, ..density..)) + geom_histogram(binwidth =
1)
p + facet_grid(. ~ cut) + theme(strip.text.x = element_text(family="mono"))

This example will have the facet labels typeset in a monospaced font. If I
use the tikzDevice the output will just have normal serif font face. Is
there anyway to achieve the look I want without manually wrapping the facet
labels in a LaTeX \texttt{}. I tend to find that approach leads to unusual
spacing issues. Especially in the legend.

Thanks,
Alastair.

[Cameron Bracken]

At the moment, no. The problem is that tikzDevice doesn't respect par('family') which I assume is getting set for those text labels. We don't respect this because LaTeX has its own way of doing fonts. While "mono" may be something we can translate to a LaTeX command, other values of 'family' may not be. We would have to require that the value set for par('family') be an exact LaTeX font to avoid maintaining a map of 'family' values to LaTeX font names.  For the time being you will need to specify fonts in LaTeX. 

The spacing thing is another issue. If you have a specific example we can check it out, maybe there is a bug in the text placement somewhere. 

Cameron

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