Graphical Question in matlab

[hervep]

Dear all,
I would like to know how I can plot a function f(x,y,z) with matlab. (of course 3D )
I have the values of f for each point (x, y, z).
Does anyone can give a matlab code procedure?
Thank's in advance

 

[IRstuff]

You seem to be asking how to plot 4 quantities, not 3

TTFN