Classes derived from this class will provide interpolated
values from two sequences of length $ N $ and $ M $,
representing the discretized values of the $ x $ and $ y $
variables, and a $ N \times M $ matrix representing
the tabulated function values.
base class for 2-D interpolations.
Classes derived from this class will provide interpolated values from two sequences of length $ N $ and $ M $, representing the discretized values of the $ x $ and $ y $ variables, and a $ N \times M $ matrix representing the tabulated function values.