J over B

Reads the magnetic field and current density from one MAS File node on the psi-data-utils run source, merges each into a vector field, and plots the ratio of the current magnitude to the field magnitude on a radial shell.

This group ships with PVA under Groups ▸ Stock ▸ Fields. To keep an edited copy, put j-over-b.pyvt in the groups folder of the PVA home (see Files and folders); it then appears under Groups ▸ Saved. See Groups.