add divergence option to gradient of unstructured data filter
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
The gradient of unstructured data filter has options to compute vorticity and Q criteria but no option to compute divergence (i.e. [du/dx+dv/dy+dw/dz} where [u,v,w] is the velocity vector). Mike Stephens is requesting this feature.