G'day there, thanks for the comprehensive response.
On 04/03/2010, at 14:41 , Prof Brian Ripley wrote:
> Your example is not reproducible, but png() does support transparent
> backgrounds and you did not specify one (by bg="transparent"). The native
> method on a Mac would be png(type="quartz"): have you tried that?
Neat - I wasn't aware of that. I am trying to avoid Mac specific solutions as
the scripts are also running on a FreeBSD server using PL/R, and I was hoping
to swap them back and forward as simply as possible.
> Yes, there are known problems with cairo font handling on Macs: some of them
> have been overcome in R's builtin cairo support, including in the default
> type="cairo" for png.
>
> Given that 'cairo' (as in cairographics.org, their preference is not to
> capitalize) is a third-party graphics system, it is rather ambiguous as to
> whether you meant R's builtin support or the contributed package Cairo
> (library(Cairo) appears nowhere in your code): I am presuming the latter for
> which incorrect use of italics is a known (and reported) problem.
OK, apologies - my ambiguity is more than likely due to my not understanding
the difference. The only reference I found that approximated my problem was on
this list, and it wasn't conclusive, hence my post to this list.
> Finally, Cairo is a contributed package, and the posting guide suggests
> writing to the author/maintainer first. As that is Simon U, he does read
> this list but in many other instances that would not be the case.
ibid
cheers
Ben
>
> On Thu, 4 Mar 2010, Ben Madin wrote:
>
>> G'day all,
>>
>> I am using Cairo to produce output graphics (mainly png), but don't seem to
>> be able to figure out how to stop the text being rendered in italics.
>>
>> I am using 10.6.2, and R version 2.10.1 Patched (2010-02-01 r51089).
>>
>> Using this produces the output as I anticipated (with upright text)
>>
>> png('outputs/reports_by_province2.png')
>> barplot(outbreaks.summary$Provinces,names.arg=outbreaks.summary$Year,
>> ylab='Number of provinces reporting outbreaks', cex.axis=1, cex.names=1) ->
>> tmp
>>
>> Using this produces a nicer image (the transparent background is important),
>> but the text is all italicised
>>
>> Cairo(950,450, 'outputs/reports_by_province.png')
>> barplot(outbreaks.summary$Provinces,names.arg=outbreaks.summary$Year,
>> ylab='Number of provinces reporting outbreaks', cex.axis=1.2, cex.names=1.2)
>> -> tmp
>>
>> I can change the family, ie :
>>
>>> par('family')
>> [1] "serif"
>>
>> but Cairo doesn't seem to respect it (I'm actually wanting Helvetica so it
>> doesn't matter), but I can't fix the font (and I note from the docs:
>> fonts see pdf, ignored, Cairo automatically detects and embeds fonts
>> )
>>
>> So I'm wondering if it is just my installation, a known issue or I've missed
>> the workaround (using CairoFonts hasn't changed it).
>>
>> cheers
>>
>> Beb
>>
>> _______________________________________________
>> R-SIG-Mac mailing list
>> R-SIG-Mac@stat.math.ethz.ch
>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>>
>
> --
> 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
_______________________________________________
R-SIG-Mac mailing list
R-SIG-Mac@stat.math.ethz.ch
https://stat.ethz.ch/mailman/listinfo/r-sig-mac
