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Re: 3d plot's of function's domain

  • To: mathgroup at
  • Subject: [mg63143] Re: [mg63109] 3d plot's of function's domain
  • From: Bob Hanlon <hanlonr at>
  • Date: Thu, 15 Dec 2005 06:07:19 -0500 (EST)
  • Reply-to: hanlonr at
  • Sender: owner-wri-mathgroup at

Look at the package Graphics`InequalityGraphics`

Bob Hanlon

> From: "A D'Ignazio" <est1900 at>
To: mathgroup at
> Date: 2005/12/15 Thu AM 03:06:21 EST
> Subject: [mg63143] [mg63109] 3d plot's of function's domain
> Dear MathGroup,
> I would be very grateful if you could help me on this:
> I got a function of three variables f(x,y,z). I want to get a 3d plot of the
> region A in R^3 such that for any vector of values (x,y,z) in A the function
> f is positive. I'm only able to solve this problem in a basic way: I fix one
> of the three variables -let's say z=Z -and then I get the 3d plot of the
> function f(x,y| z=Z), get the contour plot and define the region of
> interest. I can do it for several values of Z, but i think it is not very
> elegant.
> There is a way to obtain directly the 3d plot of the variables space such 
> that the condition of f(.) being positive is satisfied?
> Many thanks
> A D
> _________________________________________________________________
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