Energy Density for a Single Ring of Current

This code finds the energy density generated by a single ring of current. The energy density is entirely magnetic field driven. It sets up a matrix of points with a height and width centered on the (0,0) point.

The ring sits along the Y axis
The ring has a radius of :0.127 M
The ring has :20000 (AmpTurns)

You enter the following:

Height? (suggest: 0.35):
Width? (suggest: 0.65):
Number of Cells?
Number of Contours?
Size to Label?