inverse_distance_to_points¶

metpy.interpolate.inverse_distance_to_points(points, values, xi, r, gamma=None, kappa=None, min_neighbors=3, kind='cressman')[source]¶

Generate an inverse distance weighting interpolation to the given points.

Values are assigned to the given interpolation points based on either [Cressman1959] or [Barnes1964]. The Barnes implementation used here based on [Koch1983].

Parameters:

points (array_like, shape (n, 2)) – Coordinates of the data points.
values (array_like, shape (n,)) – Values of the data points.
xi (array_like, shape (M, 2)) – Points to interpolate the data onto.
r (float) – Radius from grid center, within which observations are considered and weighted.
gamma (float) – Adjustable smoothing parameter for the barnes interpolation. Default None.
kappa (float) – Response parameter for barnes interpolation. Default None.
min_neighbors (int) – Minimum number of neighbors needed to perform barnes or cressman interpolation for a point. Default is 3.
kind (str) – Specify what inverse distance weighting interpolation to use. Options: ‘cressman’ or ‘barnes’. Default ‘cressman’

Returns:

img ((M,) ndarray) – Array representing the interpolated values for each input point in xi