[pstricks] parametrics 3Dplots

[Michael Sharpe]

Is this example the sort of thing you wanted?

\parametricplotThreeD[algebraic](0,3){%
t,t+sin(t),(t+sin(t))*(3-t)^.4}

I don't know about any incomplete gamma function available to  
PSTricks. You could generate sample data from igamma using gnuplot,  
with output set to file, and then use \listplot from pst-plot to  
render the plot.

Michael


On Jul 30, 2008, at 12:52 AM, Cyrille Piatecki wrote:

> 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.
>