Fucntion to project point data to mesh cell for visualisation

[lsuchoy]

Hi

Is there a function which projects marker data onto cells for visualisation? something like vis.scalar_fn_to_pv_points but for marker data? I imagine this will require some embedded averaging and interpolation methods since some cells can have more than one marker and others can have none.

Lior

[knepley]

One way to do this is to call https://petsc.org/main/manualpages/DM/DMSwarmProjectFields/ . Its a one line thing, although we could possibly optimize it better in this simple case.

[lsuchoy]

Something like: DMSwarmProjectFields(swarm, mesh, 1, ["Material"])?

[knepley]

and the Vec from mesh that you want to project into and a scatter mode, which would be SCATTER_FORWRD.