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Home MathPack Math1 Miscellaneous Stuff InterpolZofXYRect  
See also: InterpolTable, InterpolXYTable  
InterpolZofXYRect 

The function InterpolZofXYRect interpolates the z coordinate Z_{xy} at a particular position of a simple 3D surface (assuming that the surface is a plane or a saddle). The surface is spanned by four points which are located at the corners of a rectangle. The z values at the corners are specified by the parameters z00, z01, z10, and z11. The position of the unknown z value is defined by the fractions along the x and the yaxis (parameters frac1 and frac2). The function returns the estimated z value Z_{xy} at the specified position.
