Using Jmol, 79 we visualize the vector fields J(r) and B(r) as three-dimensional arrows, where the arrow thickness is scaled proportionally with the vector magnitudes, | J| and | B|. We define z as the direction of transport and color the arrows based on the magnitude of one of the three vector-components relative to full magnitude. When plotting the strength of a linear (cartesian) component, v z , we use yellow-purple color scale. To plot the strength of a rotating vector field, we convert the vector field to a cylindrical coordinate system and color by the azimuthal vector component using a blue-red color scale. The cylindrical vector components were calculated from the cartesian vector components, v x and v y , as