[R] Sys.setlocale() and text()
Prof Brian Ripley
ripley at stats.ox.ac.uk
Wed Dec 12 18:19:41 CET 2007
On Wed, 12 Dec 2007, Ed Merkle wrote:
> Thanks very much for the response. I think I left out an important
> detail, however.
> I want my lowercase sigma to be displayed in a specific font from the
> Rdevga file (my project involves fonts). So far as I know, quote() does
> not allow me to select a font. Thus, I am specifically interested in
> the text() command and reasons why my example code performs differently
> in R 2.3.0 vs 2.6.1.
I think the only thing which needs explaining is why it worked in 2.3.1:
you can't usually switch 8-bit locales in an application on Windows and
expect to get the right font. Most likely it was fortuitous that it
worked: it was only intended to work in a multibyte locale (see the entry
in CHANGES for 2.3.0), and that principally to aid testing of non-Western
locales by the developers.
But if you are really interested in differences then you will need to
study the changes in the source code for yourself: the price you paid does
not include that level of support.
One of the holdups has been that we tried still to support Windows 9X/ME.
That will be dropped as from R 2.7.0 and so we can use Unicode to access
the glyphs via text(). Your example works for me in R-devel, so please
try that in a day or two (I think it needs a recent change).
Note though that switching locales within a session is fragile: it
invalidates all existing 8-bit data, and so for example repainting the
graphics window or the console can change the glyphs displayed. (In
R-devel, try changing back to US and resize the graphics window.)
> Gabor Grothendieck wrote:
>> Try this:
>> plot(1:10, main = quote(sigma ^ 2))
>> On Dec 11, 2007 10:09 PM, Ed Merkle <edgar.merkle at wichita.edu> wrote:
>>> Dear HelpeRs,
>>> I have a question about the Sys.setlocale() command and plotting. I am
>>> running Windows XP, with R 2.6.1. My default locale is English_United
>>> I am trying to add a lowercase sigma to a plot using the following code:
>>> For R 2.6.1, this code gives me the glyph from my default (1252) instead
>>> of from the 1253 codes. For an older version of R (2.3.0) on the same
>>> computer, this code gives me the lowercase sigma that I wanted. I have
>>> been unable to pinpoint what has changed. Thanks for the help, and I
>>> apologize if I am missing something obvious.
>>> Ed Merkle, PhD
>>> Assistant Professor
>>> Dept. of Psychology
>>> Wichita State University
>>> Wichita, KS 67260
>>> R-help at r-project.org mailing list
>>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Brian D. Ripley, ripley at 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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