[SciPy-User] computing surface gradients using mayavi mlab

[Iara Pereira]

Hi there,

I'm using mlab.mesh to visualize data of a pressue field over a streamlined 
body and I would like to compute the pressure gradient on that surface.
I was wondering, since mayavi uses some kind of interpolation method to 
represent the field between mesh nods, if it is possible to extract the 
derivatives on each cell from the vtk object. Or is there any other 
alternative besides triangulating the surface and calculating finite 
differences for interpolated points inside the triangle?

Thanks for the help...
Iara