scipy.interpolate.bisplev¶

scipy.interpolate.bisplev(x, y, tck, dx=0, dy=0)[source]¶

Evaluate a bivariate B-spline and its derivatives.

Return a rank-2 array of spline function values (or spline derivative values) at points given by the cross-product of the rank-1 arrays x and y. In special cases, return an array or just a float if either x or y or both are floats. Based on BISPEV from FITPACK.

Parameters:

Parameters:	x, y : ndarray Rank-1 arrays specifying the domain over which to evaluate the spline or its derivative. tck : tuple A sequence of length 5 returned by `bisplrep` containing the knot locations, the coefficients, and the degree of the spline: [tx, ty, c, kx, ky]. dx, dy : int, optional The orders of the partial derivatives in x and y respectively.
Returns:	vals : ndarray The B-spline or its derivative evaluated over the set formed by the cross-product of x and y.

x, y : ndarray

Rank-1 arrays specifying the domain over which to evaluate the spline or its derivative.

tck : tuple

A sequence of length 5 returned by bisplrep containing the knot locations, the coefficients, and the degree of the spline: [tx, ty, c, kx, ky].

dx, dy : int, optional

The orders of the partial derivatives in x and y respectively.

Returns:

vals : ndarray

The B-spline or its derivative evaluated over the set formed by the cross-product of x and y.