[R] expression()

[Paul Murrell]

Hi


javier garcia-pintado wrote:
> Thanks you,
> this works right.
> 
> I just would like to note one thing:
> although I've found italic() in the help for plotmath and I can see that
> the italic function:
> 
> mtext(expression(italic(beta)[max]),side=1,line=2)
> 
> does not work on the greek beta character.
> 
> Though not strictly necessary, this would be perfect for my plots, as I
> use them for papers to be published.


Take a look at
http://www.stat.auckland.ac.nz/~paul/Talks/fonts.pdf
(and maybe http://www.stat.auckland.ac.nz/~paul/Talks/fonts.tar.gz)
especially the latter half on mathematical formulas in plots, which
shows an example of using TeX fonts in R plots.
It includes links to further materials and explanations.

Paul


> Wishes,
> Javier
> ------------------------------------------
> Benilton Carvalho wrote:
>> mtext(expression(beta[max]), side=1, line=2)
>>
>> is it what you want?
>>
>> b
>>
>> On Dec 12, 2006, at 10:59 AM, javier garcia-pintado wrote:
>>
>>> Hi,
>>> I'm trying to use expression() to write a text to a graphic in the 
>>> margin.
>>>
>>> Using:
>>>
>>> mtext(expression(beta),side=1,line=2)
>>>
>>> writes a perfect beta greek character, but I need to add a subindex
>>> "max", and I'm trying:
>>>
>>> mtext(paste(expression(beta),"max"),side=1,line=2)
>>>
>>> simply writes "beta max" in the plot.
>>>
>>> Please, Could you tell me what I'm doing wrong?
>>>
>>> By the way, is there a way to add Latex expressions to graphics?  Then I
>>> could use the Latex expression: $\beta_{\mathrm{max}}$. This also  would
>>> be very useful for me for more complex expressions in plots.
>>>
>>> Best regards,
>>>
>>> Javier
>>>
>>> -- 
>>> Javier García-Pintado
>>> Institute of Earth Sciences Jaume Almera (CSIC)
>>> Lluis Sole Sabaris s/n, 08028 Barcelona
>>> Phone: +34 934095410
>>> Fax:   +34 934110012
>>> e-mail:jgarcia at ija.csic.es
>>>
>>> ______________________________________________
>>> R-help at stat.math.ethz.ch mailing list
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>>> 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 stat.math.ethz.ch mailing list
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

-- 
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul at stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/