- chaosmagpy.model_utils.colloc_matrix(x, knots, order, deriv=None)¶
Create collocation matrix of a univariate function on x in terms of a B-spline representation of order k.
The computation of the splines is based on the scipy-package.
- xndarray, shape (N,)
N points to evaluate the B-spline at.
- knotsndarray, shape >= (k+1,)
Vector of knots derived from breaks (with appropriate endpoint multiplicity).
- orderint, positive
Order k of the B-spline (4 = cubic).
- deriv: int, positive, optional
Derivative of the B-spline partition (defaults to 0).
- collmatndarray, shape (N, n-k)
Collocation matrix, n is the size of knots.