[pstricks] Slicing a surface plot

[David Tarazona]

I answer myself... I can do that with an intersectionplan by just passing
the parameters of the plane...

2011/7/8 David Tarazona <daleotar at gmail.com>

> Hi and thank you Herbert for your awesome and continuous support...
>
> I want to graph the function f(x,y) = x^4 + y^4 - 4xy + 1
>
> So, above you'll find the code I'm using to plot the surface:
>
> \documentclass{article}
> \usepackage{pst-solides3d,pst-3dplot,pstricks-add,pst-plot,pstricks}
> \begin{document}
> \psset{unit=1}
> \psset{viewpoint=150 500 375,Decran=600}
> \psset{lightsrc=viewpoint}
> \begin{pspicture}(-4,-2)(4,5)
> \psSolid[object=grille,base=-3 3 0 3,linecolor=gray,ngrid=6
> 6,RotX=-90](0,-3,3)
> \psSolid[object=grille,base=-3 3 -3 3,linecolor=gray,ngrid=6 6](0,0,0)
> \psSolid[object=grille,base=0 3 -3 3,linecolor=gray,ngrid=6
> 6,RotY=90](-3,0,3)
> \psSurface[tablez=0.8 0.01 4 {} for,  zcolor=.666 0,ngrid=72
> 72,linewidth=0.01pt,algebraic,hue=0.5
> 1,Zmin=0,Zmax=3](-3,-3)(3,3){(x^4)+(y^4)-(4*x*y)+1}
> \psPoint(3.5,-3.5,3){a} \uput{2pt}[l](a){$\scriptstyle f\left(x,y\right)$}
> \psPoint(0,3,0){a} \uput{15pt}[dr](a){$\scriptstyle x_1$}
> \psPoint(3,0,0){a} \uput{15pt}[dl](a){$\scriptstyle x_2$}
> \end{pspicture}
> \end{document}
>
>
> I'm doing it right, however if you check the function at x=3, y=3 (which is
> in the limits) f(3,3) = 127...
>
> I want to graph just z values just between 0 and 3 like I'm trying to do
> with Zmin=0,Zmax=3... however I think those Zmin, Zmax are used along with
> axesboxed... So, I want to "slice" the graph so the values are between the
> planes z=0 and z=3... Then, my question is:
>
> How can I slice a plot surface?... or
> How can I define an interval for z axis of the plot surface as well as X
> and Y intervals?
>
> Thanks for anyone who can tell me something about this...
>
> Also thanks Herbert. Bye!
>
> --
> Att,
>
> David Tarazona
> Desarrollos Inteligentes - Mechcorp Ltda.
> Tel: (57)(1) 700-6364
>



-- 
Att,

David Tarazona
Desarrollos Inteligentes - Mechcorp Ltda.
Tel: (57)(1) 700-6364
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