makima: Modified Akima Interpolator

In boostmath: 'R' Bindings for the 'Boost' Math Functions

Modified Akima Interpolator

Description

Constructs a Modified Akima interpolator given the vectors of abscissas, ordinates, and derivatives.

Usage

makima(x, y, left_endpoint_derivative = NULL, right_endpoint_derivative = NULL)

Arguments

x	Numeric vector of abscissas (x-coordinates).
y	Numeric vector of ordinates (y-coordinates).
left_endpoint_derivative	Optional numeric value of the derivative at the left endpoint.
right_endpoint_derivative	Optional numeric value of the derivative at the right endpoint.

Value

An object of class makima with methods:

• interpolate(xi): Evaluate the interpolator at point xi.

• prime(xi): Evaluate the derivative of the interpolator at point xi.

• push_back(x, y): Add a new control point

Examples

x <- c(0, 1, 2, 3)
y <- c(0, 1, 0, 1)
interpolator <- makima(x, y)
xi <- 0.5
interpolator$interpolate(xi)
interpolator$prime(xi)
interpolator$push_back(4, 1)

boostmath documentation built on Dec. 15, 2025, 5:07 p.m.