plotting isosurface using visAD

Hi,

I have a 3 dimensional random dataset using which I need to create a surface.
Does visAD has functionalisties which would enable to create a surface plot
using the random 3D-data set. Is there any example which explains about creating of surface using
random 3D-dataset.
At the moment I have followed the example P4_01 and was able to plot the dataset but it gives no help regarding the creation of surface from random 3D datasets..

thank you,
Johnson Abraham