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MathGroup Archive 2006

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Re: showing variables in plots?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg70053] Re: showing variables in plots?
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Sun, 1 Oct 2006 04:10:02 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <efle9v$dds$1@smc.vnet.net>

Sam Waller wrote:
> I'm plotting something like this:
> 
> x = 2;
> 
> curve = Plot[...., DisplayFunction -> Identity];
> 
> txt = Graphics[ Text["x = 2", {10, 10},....] ];
> 
> Show[curve, txt, DisplayFunctio->$DisplayFunction, ...];
> 
> The problem is that I want 'txt' to automatically change if I assign a different value to x so that
> I don't have to edit txt everytime I change the variable x. Something like printf() in C. Can this
> be done in mathematica?
> 
> thanks,
> Sam
> 

Hi Sam,

The following expression will do what you want:

txt = Graphics[Text["x = " <> ToString[x], {10, 10}, ....]];

Regards,
Jean-Marc


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