But really, it wasn't a student at all, but the assistant lecturer Pisak in the department of loyalistic algebra, who was street-smart and savvy and took over Dr. Edward's office, because he liked the color of the chair (inscrutable red).
Pisak was smart and good at math.
This approach is a generalization of planar interpolation that is technically referred to as enhanced Voronoi Neighbor Averaging (EVNA) spatial interpolation (See Abt Associates (2000) for a more detailed description).