R help - Dec 2006 - expression()

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 Garc?a-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

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 Garc?a-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
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting- 
> guide.html
> and provide commented, minimal, self-contained, reproducible code.

Hallo,

for the first question:
mtext(expression(beta[max]),side=1,line=2)

and:
?plotmath
demo(plotmath)
for the second.

Hope it helped,
Scionforbai

On Tuesday 12 December 2006 07:59, javier garcia-pintado
wrote:
> "beta max"
Sorry, couldn't resist.

JD