ngsPETSc.utils.utils

Convenience functions that are FiniteElement backend independent.

Functions

find_permutation(points_a, points_b[, tol])

Find all permutations between a list of two sets of points.

Module Contents

ngsPETSc.utils.utils.find_permutation(points_a: numpy.typing.NDArray[numpy.inexact], points_b: numpy.typing.NDArray[numpy.inexact], tol: float = 1e-05)

Find all permutations between a list of two sets of points.

Given two numpy arrays of shape (ncells, npoints, dim) containing floating point coordinates for each cell, determine each index permutation that takes points_a to points_b. Ie: ` permutation = find_permutation(points_a, points_b) assert np.allclose(points_a[permutation], points_b, rtol=0, atol=tol) `