The region around these areas are good places to start streamlines. The output of this filter is a set of vertices. These vertices mark the vector field singularities. You can use an object like vtkGlyph3D to place markers at these points, or use the vertices to initiate streamlines. The Distance instance variable controls the accuracy of placement of the vertices.
Smaller values result in greater execution times.
The input to this filter is any dataset type. The position of the vertices is found by sampling the cell in parametric space. Sampling is repeated until the Distance criterion is satisfied. Specify distance from singularity to generate point. Construct object with distance 0.1.