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<div> <font size="2">I do not know if I understood your question correctly. Here, the domain is restricted to R (x, y) <1<br>
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\documentclass{article}<br>
\usepackage{pst-solides3d}<br>
\begin{document}<br>
\begin{center}<br>
\begin{pspicture}(-5,-4)(6,10)<br>
\psframe(-5,-4)(6,10)<br>
\psset{viewpoint=50 30 30 rtp2xyz,Decran=200,lightsrc=viewpoint}<br>
\psSolid[object=grille,base=-1 1 -1 1,action=draw]%<br>
\axesIIID(0,0,0)(2,2,1)<br>
\psSurface*[<br>
fillcolor=cyan,<br>
r=1,<br>
ngrid=.5 .5,incolor=yellow,grid](-1,-1)(1,1){%<br>
Euler x y mul exp }<br>
\psSolid[object=cylindre,r=1,h=2,action=draw,ngrid=1 18]<br>
\psPoint(0,0,1){O}<br>
\psPoint(0,0,3){Z}<br>
\psline{->}(O)(Z)<br>
\uput[r](Z){$z$}<br>
\end{pspicture}<br>
\end{center}<br>
\end{document}<br>
<br>
<br>
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<div class="envelope" style="float: none;" align="left"><img src="cid:AOLP.4839430" id="TIE.4839430" style="margin: 5px; vertical-align: middle;" alt="EXPxy.png" class="AOLInlineImage" title="EXPxy.png" width="275"></div>
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<div style="clear:both">Manuel Luque<br>
<br>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black">-----E-mail d'origine-----<br>
De : leon.free <leon.free@free.fr><br>
A: pstricks <pstricks@tug.org><br>
Envoyé le : Me, 1 Mar 2017 15:08<br>
Sujet : [pstricks] 3D surface on non rectangular domain<br>
<br>
Hi,<br>
I'd like to plot the surface of a function such as exp(x*y) only for the (x,y)'s in the unit ball B = \{(x,y) \in \mathbb{R}^2 : x^2+y^2 \le 1\}. I do not want to set the value of the function outside B to some particular value (e.g. 0). Do you know if there exists some pstricks package that can make this ?<br>
Thanks,<br>
elef<br>
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