Automatic FFT Setup in GM-SYS 3D Modelling

GM-SYS 3D calculations require that all grids be expanded to "Good" FFT dimensions and filled so that they are periodic. Expansion and fill occurs automatically each time a calculation is performed. The automatic expansion factor can be set. It is recommended that it be at least 50% to avoid edge effects. The Automatic FFT Setup allows control of the amount and shape of expansion that will be used if the program performs these operations.