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MathGroup Archive 2007

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Re: v.6 RevolutionPlot3D

  • To: mathgroup at smc.vnet.net
  • Subject: [mg76444] Re: [mg75852] v.6 RevolutionPlot3D
  • From: Brett Champion <brettc at wolfram.com>
  • Date: Tue, 22 May 2007 02:54:25 -0400 (EDT)
  • References: <200705120700.DAA23589@smc.vnet.net>

On May 12, 2007, at 2:00 AM , Helen Read wrote:

> We just got 6.0 on our site license, and I installed on my computer(s)
> yesterday.
>
> I see that SurfaceOfRevolution (which was in an add on package) has  
> been
> replaced by RevolutionPlot3D. Sounds great, except that  
> RevolutionPlot3D
> only revolves around the vertical axis. We (my calculus students) used
> the old SurfaceOfRevolution all the time for visualizing surfaces of
> revolution for computing volume and surface area, and we need to be  
> able
> to revolve around both the vertical axis and the horizontal axis. This
> was a simple matter of setting RevolutionAxis->{0,0,1} or
> RevolutionAxis->{1,0,0} respectively. Now, I can write a function for
> revolving around the horizontal axis and provide it to the  
> students, but
> I can already foresee the confusion it will cause when they can use a
> built-in function for revolving in one direction, and have to do it a
> different way to revolve in the other direction.

Thank you for pointing this out.  I've filed a bug requesting that  
the option be added to RevolutionPlot3D, and we'll look into adding it.

Brett Champion
Wolfram Research



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