Timothy R. Cook wrote:

> Observe figure 1.  Randomly-filled-with-sphere_sweep
> cylinder.  Good.
> Observe figure 2.  Randomly-filled-along-xy-axes,-
> but-the-z-axis-isn't-random.
> I want figure 2 filled with the randomness of figure
> 1.
> How do I do that?

make the z axis a random number from 0 to 1 that will be a coefficient 
of your z equation  ?

               David.

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