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Member of the polynomials class.

Syntax

pchip(x1, y1, x2)

y2 = pchip(x1, y1, x2)

Description

Generates a piecewise cubic Hermitian polynomial. LabVIEW uses x1 and y1 to generate the piecewise cubic Hermitian polynomial. x2 specifies additional x-values, and y2 returns the y-values that correspond to x2. In other words, (x2, y2) are interpolated values of the underlying piecewise cubic Hermitian polynomial.

Examples

Inputs

Name	Description
x1	Specifies a real vector.
y1	Specifies a real vector of the same size as x1. y1 also can be a matrix. If y1 is a matrix, LabVIEW treats the columns of y1 as the vector y1.
x2	Specifies a vector of additional x-values.

Outputs

Name	Description
y2	Returns a real vector of the same size as x2.

Examples

Y2 = pchip([1, 2, 3, 4, 5, 6], [0, 0, 1, 1, 0, 0], [2.3, 7.1])

Related Topics

interp1
spline