CubicInterp

CubicInterp(d,r,x,I)

Returns the natural cubic spline interpolated values of r along d, interpolating for values of X. The points (r,d) that get interpolated are indexed by I. The values of d must be ascending. The index I is optional when d and r have only one index is common; however, it is recommended that you explicitly specify I, since this will enable your expression to array-abstract if any dimension is ever added to d and r in the future.

Null values are allowed in d and r only in releases later than 4.1.1 (not including 4.1.1). Points having either d or r equal to null are ignored. When x is null, the result is null.

Declaration

CubicInterp( D,R : Numeric[I] ; X : numeric ; I : Index )

See also

• MonoCubicInterp
• LinearInterp
• StepInterp