[R] \ll and \gg in expression()

[Michael Kubovy]

On Feb 9, 2008, at 4:41 PM, Prof Brian Ripley wrote:

> On Sat, 9 Feb 2008, Michael Kubovy wrote:
>
>> How do I enter 'much greater than' and 'much less than'  symbols in  
>> an
>> expression?
>
> Those are not in the Adobe Symbol encoding used for plotmath.
>
> Since you have not told us your platform and locale as requested in  
> the posting guide

R version 2.7.0 Under development (unstable) (2008-02-05 r44340)
i386-apple-darwin8.10.1

locale:
C

> I don't know if the following is relevant to you.
>
> If you have a suitable Unicode font and the means to use it (which  
> most likely means a UTF-8 locale in R < 2.7.0) they are the glyphs  
> for "\u226a" and "\u226b" (see http://www.alanwood.net/unicode/mathematical_operators.html) 
> .  A quick check suggests that not many fonts do.

Thanks. The Mac character palette tells me that they correspond to  
Unicode 226A and B or UTF8 E2 89 AA and AB.

My question now is, how do I tell expression() to use the glyphs for  
these?
_____________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
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