[R] how to write symbol (nabla) in R graph

[Nuno Prista]

Dear all, 

I still need help (I am a newbie to R). 

I looked on the plotmath help and could not find how Unicode can be used.
And I am in a Windows platform which I don't know if it is relevant. Can
anyone help? Here is a simple example

plot(1:10,1:10)

can anyone provide the code to insert a "nabla" anywhere on it?

thanks


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of Dieter Menne
Sent: Friday, June 20, 2008 3:03 AM
To: r-help at stat.math.ethz.ch
Subject: Re: [R] how to write symbol (nabla) in R graph

Nuno Prista <nmprista <at> fc.ul.pt> writes:

> 
> Can anyone of you tell me how to write a "nabla" symbol in an R graph?
> 


I have not tested it, but according to

http://www.gnu.org/software/plotutils/manual/html_chapter/plotutils_10.html


nabla is Unicode [0321]

Check documentation on plothmath how to use it.

Note: the documents cited in plotmath are huge, and it would be nice to have
something like the gnu-reference I google for a short list.

Dieter

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