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}] >