agurvich
commented
3 years ago better to have scalar field values and then a single vector quantity you can load in (typically velocity but users may wish something else). Would be nice to expose a hook to change "velocity vectors" to "electric field vectors" or whatever they may want to visualize.
the field name "Velocities" is special in that it's the only one that is treated as a vector. We should separate this out in the same way we do coordinates rather than have users pass it as a field with a specific name (same as with SPH radius).