filling axis with ParametricPlot3D

*To*: mathgroup at smc.vnet.net*Subject*: [mg132215] filling axis with ParametricPlot3D*From*: "mathgroup " <fizzymath at knology.net>*Date*: Sat, 18 Jan 2014 05:01:46 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net

I am plotting, using ParametricPlot3D, an animation of the vector sum of 2 orthogonal sine waves of the form Sin[k x =E2=80=93 w t] moving with different phase velocities as they travel along the z axis emerging from the point z = 0. I would like to use the equivalent of Filling->Axis for the resultant so that I can see what happens more clearly.......Unfortunately, Filling->Axis is not an option with ParametricPlot3D...