mesh_degree_matrix

compas.datastructures.mesh_degree_matrix(mesh, rtype='array')

Creates a vertex degree matrix from a Mesh datastructure.

Parameters

• mesh (compas.datastructures.Mesh) – Instance of mesh.

• rtype ({‘array’, ‘csc’, ‘csr’, ‘coo’, ‘list’}) – Format of the result.

Returns

array-like – Constructed vertex degree matrix.

Examples

>>> from compas.datastructures import Mesh
>>> mesh = Mesh.from_polyhedron(6)
>>> D = mesh_degree_matrix(mesh)
>>> type(D)
<class 'numpy.ndarray'>

>>> D = mesh_degree_matrix(mesh, rtype='csr')
>>> type(D)
<class 'scipy.sparse.csr.csr_matrix'>

>>> D = mesh_degree_matrix(mesh)
>>> D.diagonal()
array([3., 3., 3., 3., 3., 3., 3., 3.])