Mode 3 of Disk Mesh with Electric Field Edges shown in color. These edge values are what is calculated when using edge based interpolation which later are translated into nodal electric field values.

Mode 1 of Disk Mesh with Electric Field Magnitude shown in color. The electric field is treated as a displacement field to see how this would deform the mesh. This ability to see deformation based on a nodal vector field was carried over from my mechanics FEA code, SLFFEA.

Mode 2 of rectangle Mesh with Electric Field vectors and electric field magnitude shown in color. Transparency is turned on.

Mode 2 of rectangle Mesh with Electric Field Edges shown in color. Again, the electric field is treated like a displacement field.