frame.akima/dist/tom/Tom.d.ts

A package for Akima interpolation

export type UniFunction = (x: number) => number;
/**
 * Returns a function that computes a cubic spline interpolation for the data
 * set using the Akima algorithm, as originally formulated by Hiroshi Akima in
 * his 1970 paper "A New Method of Interpolation and Smooth Curve Fitting Based
 * on Local Procedures."
 * J. ACM 17, 4 (October 1970), 589-602. DOI=10.1145/321607.321609
 * http://doi.acm.org/10.1145/321607.321609
 *
 * This implementation is based on the Akima implementation in the CubicSpline
 * class in the Math.NET Numerics library. The method referenced is
 * CubicSpline.InterpolateAkimaSorted.
 *
 * Returns a polynomial spline function consisting of n cubic polynomials,
 * defined over the subintervals determined by the x values,
 * x[0] < x[1] < ... < x[n-1].
 * The Akima algorithm requires that n >= 5.
 *
 * @param xVals
 *    The arguments of the interpolation points, in strictly increasing order.
 * @param yVals
 *    The values of the interpolation points.
 * @returns
 *    A function which interpolates the dataset.
 */
export declare function createAkimaSplineInterpolator(xVals: ArrayLike<number>, yVals: ArrayLike<number>, isPolar?: boolean, gapInterpolation?: number): UniFunction;
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