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MathGroup Archive 1999

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Re: Surface of Revolution

  • To: mathgroup at smc.vnet.net
  • Subject: [mg20244] Re: [mg20209] Surface of Revolution
  • From: "Richard Finley" <rfinley at medicine.umsmed.edu>
  • Date: Fri, 8 Oct 1999 18:30:19 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Chee,
If you notice in the documentation, the option for RevolutionAxis is NOT 
an arbitrary axis but an axis through the origin, so the axis x=1 (in 
2D) does not qualify.  However, you can generate the same surface by 
simply generating the SurfaceOfRevolution of (x+1)^2 from x=1 to x=2 
about the x=0 axis (y axis)...SurfaceOfRevolution[(x+1)^2,{x,1,2}] . 
regards, RF

>>> "Chee Lim Cheung" <cheelc at mbox2.singnet.com.sg> 10/06/99 07:06PM >>>
Hi Mathematica users & experts,

There is a package in Mathematica which allows us to generate surfaces of
revolution. It is in the context Graphics`SurfaceOfRevolution`. It is
stated that a surface of revolution can be generated about any axis by
setting the option RevolutionAxis. However, it is not exactly to me how to
do this. For example, I would like to generate a surface of revolution of
the curve y = x^2 from x = 2 to x = 3 about the axis x = 1. 
Anybody out
there who can give me some pointers on how to go about it?

Thanks
Chee




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