sfepy.discrete.fem.utils module¶

sfepy.discrete.fem.utils.
compute_nodal_edge_dirs
(nodes, region, field, return_imap=False)[source]¶ Nodal edge directions are computed by simple averaging of direction vectors of edges a node is contained in. Edges are assumed to be straight and a node must be on a single edge (a border node) or shared by exactly two edges.

sfepy.discrete.fem.utils.
compute_nodal_normals
(nodes, region, field, return_imap=False)[source]¶ Nodal normals are computed by simple averaging of element normals of elements every node is contained in.

sfepy.discrete.fem.utils.
extend_cell_data
(data, domain, rname, val=None, is_surface=False, average_surface=True)[source]¶ Extend cell data defined in a region to the whole domain.
 Parameters
 dataarray
The data defined in the region.
 domainFEDomain instance
The FE domain.
 rnamestr
The region name.
 valfloat, optional
The value for filling cells not covered by the region. If not given, the smallest value in data is used.
 is_surfacebool
If True, the data are defined on a surface region. In that case the values are averaged or summed into the cells containing the region surface faces (a cell can have several faces of the surface), see average_surface.
 average_surfacebool
If True, the data defined on a surface region are averaged, otherwise the data are summed.
 Returns
 edataarray
The data extended to all domain elements.

sfepy.discrete.fem.utils.
get_edge_paths
(graph, mask)[source]¶ Get all edge paths in a graph with nonmasked vertices. The mask is updated.

sfepy.discrete.fem.utils.
get_min_value
(dofs)[source]¶ Get a reasonable minimal value of DOFs suitable for extending over a whole domain.

sfepy.discrete.fem.utils.
invert_remap
(remap)[source]¶ Return the inverse of remap, i.e. a mapping from a subrange indices to a full range, see
prepare_remap()
.

sfepy.discrete.fem.utils.
prepare_remap
(indices, n_full)[source]¶ Prepare vector for remapping range [0, n_full] to its subset given by indices.

sfepy.discrete.fem.utils.
prepare_translate
(old_indices, new_indices)[source]¶ Prepare vector for translating old_indices to new_indices.
 Returns
 translatearray
The translation vector. Then new_ar = translate[old_ar].

sfepy.discrete.fem.utils.
refine_mesh
(filename, level)[source]¶ Uniformly refine leveltimes a mesh given by filename.
The refined mesh is saved to a file with name constructed from base name of filename and leveltimes appended ‘_r’ suffix.
 Parameters
 filenamestr
The mesh file name.
 levelint
The refinement level.