porepy.fracs.utils module

Frontend utility functions related to fractures and their meshing.

fracture_length_2d(pts, edges)

Find the length of 2D fracture traces.

Parameters

• pts (np.ndarray, 2 x n_pts) – Coordinates of start and endpoints of fractures.

• edges (np.ndarary, 2 x n_fracs) – Indices of start and endpoint of fractures, referring to columns in pts.

Returns

Length of each fracture.

Return type

np.ndarray, length n_fracs

uniquify_points(pts, edges, tol)

Uniquify a set of points by merging almost coinciding coordinates.

Also update fractures, and remove edges that consist of a single point (either after the points were merged, or because the input was a point edge).

Parameters

• pts (np.ndarary, n_dim x n_pts) – Coordinates of start and endpoints of the fractures.

• edges (np.ndarray, n x n_fracs) – Indices of start and endpoint of fractures, referring to columns in pts. Should contain at least two rows; additional rows representing fracture tags are also accepted.

• tol (double) – Tolerance used for merging points.

Returns

Unique point array. np.ndarray (2 x n_fracs_update): Updated start and endpoints of

fractures.

np.ndarray: Index (referring to input) of fractures deleted as they

effectively contained a single coordinate.

Return type

np.ndarray (n_dim x n_pts_unique)