deriv_quintic_spline: First derivative of the quintic spline function
In thomasblanchet/gpinter: Generalized Pareto Interpolation

deriv_quintic_spline

R Documentation

First derivative of the quintic spline function

First derivative of the quintic spline interpolation function over several intervals.

deriv_quintic_spline(x, xk, yk, sk, ak)

`x`	A vector of values between `min(xk)` and `max(xk)`, at which the function is evaluated.
`xk`	A vector of interpolation points.
`yk`	A vector of values at each interpolation point.
`sk`	A vector of slopes at each interpolation point.
`ak`	A vector of second derivatives at each interpolation point.