discretize.operators.DiffOperators.project_edge_to_boundary_edge¶
- property DiffOperators.project_edge_to_boundary_edge¶
Projection matrix from all edges to boundary edges.
Constructs and returns a matrix \(\mathbf{P}\) that projects from all mesh edges to boundary edges. That is, for a discrete vector \(\mathbf{u}\) that lives on the edges, the values on the boundary edges \(\mathbf{u_b}\) can be extracted via the following matrix-vector product:
ub = P @ u
- Returns
- (
n_boundary_edges,n_edges)scipy.sparse.csr_matrix Projection matrix with shape
- (