[pstricks] parametrics 3Dplots

[Cyrille Piatecki]

Dear all,

I have to plot a 3D parametric plot : (t, f(t), g(t)) whith a projection on (t, f(t)), (t, g(t)) and (f(t), g(t)). I have tried but without success with Plot-3D. For instance, f(t) = t + sin(t), g(t) = f(t) (a-t)^b for 0 < b < 1.

Secondly I would like to plot the Gamma function --- not the gamma distribution ---
the incomplete gamma function, the Mittag-Leffler function. Is there any way to plot thoses functions algebraicaly.

Thanks all for your help.

Cyrille Piatecki