Test 04: NFFF operation
Cubic volume with Liao absorbing boundary condition and a point source. Near-to-far field transformation (NFFF) is applied to calculate values of electric field in single point in a computation space, being directly comparable with direct computation.
What can be tested:
Compare out.gwy with test04_out.gwy, xpnt with test01_point_log to check proper performance.
(c) Petr Klapetek, 2013