I have DEM (or LPT) simulation data as point data. I also have the underlying fluid data in field. I want to get values from the fluid where the particles resides (point locations). I would like to use the ProgrammableFilter but not sure how to do it.
To be more specific, I have
shearStress field data (tensor) and I want to get the values of magnitude of
shearStress at the positions of the particles (point data). I followed the example of subtracting two datasets as mentioned here, but it is returning weird results (lots of column values in a single row).