Spline Interpolant PtByPt (Not in Base Package)

Returns an array, Interpolant, of length n, which contains the second derivatives of the spline interpolating function g(x). Interpolant contains the second derivatives of the spline interpolating function g(x) at the tabulated points , where i = 0, 1,…, n – 1. Details

initialize, when TRUE, initializes the internal state of the VI.
input data y is a set of input data.
input data x is a set of input data.
initial boundary is the first derivative of g(x) at the first x value. The default is 1.0E+30, which causes this VI to set the initial boundary condition for a natural spline.
final boundary is the first derivative of g(x) at the last x value. The default is 1.0E+30, which causes this VI to set the final boundary condition for a natural spline.
sample length is the length of each set of incoming data. The VI performs computation for each set of data. The default is 100. sample length must be greater than zero.
Interpolant is the second derivative of interpolating function g(x). Interpolant is the second derivative of interpolating function g(x) at points , i = 0, 1,…, n – 1.
error returns any error or warning condition from the VI. Refer to Point By Point Error Codes for more information about these conditions.

Spline Interpolant PtByPt Details

The sets of input data x and y have length n and contain a tabulated function, , with . initial boundary and final boundary are the first derivatives of the interpolating function g(x) at points 0 and n – 1, respectively.