bfieldtools.mesh_calculus.mass_matrix

bfieldtools.mesh_calculus.mass_matrix(mesh, lumped=False)

Computes mass matrix of a mesh.

Parameters

mesh: Trimesh Mesh object

lumped: Boolean

If True, use lumped approximation of mass matrix. If False (default), compute exact matrix. See Reuter et al 2009, page 3 (DOI: 10.1016/j.cag.2009.03.005)

Returns

sparse csr_matrix of variable shape (see the description of laplacian_matrix)

Mass matrix