Description Usage Arguments Value
cheb_fit_extr
fits a Chebyshev polynomial of order n to a data series
using the method of least squares and locates the extrema of the fit using
the Newton-Raphson-algorithm.
1 | cheb_find_extr(d, x_axis, n, roots_bound_lower = NA, roots_bound_upper = NA)
|
d |
Data series to be fitted |
x_axis |
Arbitrary x-axis |
n |
Order of the polynomial |
roots_bound_lower |
Lower boundary of the extreme value search |
roots_bound_upper |
Upper boundary of the extreme value search |
list of calculated parameters like Chebyshev coefficients, values of the filtered model, values of the first and seconda derivation, postitions and values of extremes
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