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MathGroup Archive 2006

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Re: puzzling revolution surface

  • To: mathgroup at smc.vnet.net
  • Subject: [mg67359] Re: puzzling revolution surface
  • From: dh <dh at metrohm.ch>
  • Date: Tue, 20 Jun 2006 02:14:32 -0400 (EDT)
  • References: <e757vn$l2t$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Narasimham,
if you plot a surface of revolution, the curve in the x-z plane is 
independent of the rotation angle. However, your curve does depend on 
this angle and therefore, your surface is no more a surface of 
revolution. That this works at all is an undocumented feature of 
SurfaceOfRevolution.

Daniel

Narasimham wrote:
> Am not able to comprehend how this is a surface of revolution.(When 2D
> plots on two parameters are also possible).
> 
> << Graphics`SurfaceOfRevolution`
> <<RealTime3D`
> SurfaceOfRevolution[{Sin[u] ,0.8 Cos[ v] +1 },{u,0, Pi},{v,0,2
> Pi},RevolutionAxis->{0,0,1}]
> 


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