MathGroup Archive 2006

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: puzzling revolution surface

  • To: mathgroup at
  • Subject: [mg67359] Re: puzzling revolution surface
  • From: dh <dh at>
  • Date: Tue, 20 Jun 2006 02:14:32 -0400 (EDT)
  • References: <e757vn$l2t$>
  • Sender: owner-wri-mathgroup at

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 


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}]

  • Prev by Date: Sturm-Liouville (eigenvalue/eigenfunction) problems
  • Next by Date: Re: Help: ratio of integral of f(x)^2 to square of integral of f(x)
  • Previous by thread: puzzling revolution surface
  • Next by thread: Re: puzzling revolution surface