From help-octave-request at bevo dot che dot wisc dot edu  Tue Mar  6 11:17:23 2001
Subject: Re: plotting symbols, etc
From: Ben Sapp <bsapp at lanl dot gov>
To: david barnes <d dot d dot barnes at ic dot ac dot uk>
CC: help-octave at bevo dot che dot wisc dot edu
Date: Tue, 06 Mar 2001 10:17:24 -0700

david barnes wrote:
> 
> Hi all,
> 
> I've been trying to add some symbols to titles
> but so far not much joy...
> 
> I use lines like this:
>         gset key title ' {/Symbol b}/'
> hoping for the title to include the beta symbol
> 
> what I'm *really* hoping for is a way
> of creating lovely text like having a beta
> followed by, say, subscript 1

I wanted something similar.   I came to the conclusion that you can not
have symbols when in x11 mode.  But, you can do it in postscript
enhanced mode.   In  the gnuplot manual they give an example:


set title '{/Symbol=18 \362 at _{/=9 dot 6 0}^{/=12 x}} \
                  {/Helvetica e^{-{/Symbol m}^2/2} d}{/Symbol m}'

The equivalent in Octave is:   

gset title '{/Symbol=18 \\362 at _{/=9 dot 6 0}^{/=12 x}} {/Helvetica
e^{-{/Symbol m}^2/2} d}{/Symbol b}'

The main difference is that every time you would need an escape
character \  to indicate an octal number use a \\ instead.   

To do what you wanted beta_1 would look like this:

gset title "{/Symbol=24 b}_{1}"
replot  

This is not part of your question but may be useful:  

I am a bit ingorant of what numbers correspond to what symbols.  I
searched on the web and did not find a table.  So, I ended up making a
script that sort of made a table.  You first need to make some plot,
then run this script.   In the codes.ps file you will find a different
plot for each symbol and octal code.  

---------------------------------------------------------------
gset terminal postscript enhanced color
gset output "codes.ps"
for i = 0:7
  for j = 0:7
    for k = 0:7
      cmd = sprintf("gset title \"%d%d%d -> \\\\%d%d%d <-\" font \
      \"Symbol,24\"\n",i,j,k,i,j,k);
      eval(cmd);
      replot;
      pause
    endfor
  endfor
endfor
---------------------------------------------------------------

P.S.  If there is a nice table on the web somwhere will you please point
it out to me.  Thanks.  


-- 
Ben Sapp                         Los Alamos National Laboratory
email: <mailto:bsapp at lanl dot gov>   Phone: (505)667-3277
Fax:   (505)665-7920             URL:   http://www.neutrino.lanl.gov/
--



-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
-------------------------------------------------------------