RANDOM INTERPOLATION Run Your Application (4-D only)
Note that in your application,
-10. < x1< +10. and -10. < x2< +10. -10. < x3< +10. and -10. < x4< +10.
INPUT AREA
Note that the more input locations are given, the better the interpolation results will become. The delta width essentially controls the weighting factor in the interpolation computation. A slightly larger delta value will give more smoothness of the interpolated function. In addition, for each dimension added, more input locations are needed. If the function is fairly smooth, then less number of input locations can be adequate. Conversely, if the function is not smooth, more input locations are definitely required.