MeshData

class dolfin.cpp.mesh.MeshData(*args)

Bases: dolfin.cpp.common.Variable

The class MeshData is a container for auxiliary mesh data, represented either as arrays or maps. Each dataset is identified by a unique user-specified string. Only std::size_t-valued data are currently supported.

Auxiliary mesh data may be attached to a mesh by users as a convenient way to store data associated with a mesh. It is also used internally by DOLFIN to communicate data associated with meshes. The following named mesh data are recognized by DOLFIN:

Facet orientation (used for assembly over interior facets)

  • “facet_orientation” - _std:vector_ <std::size_t> of dimension D - 1

Sub meshes (used by the class SubMesh)

  • “parent_vertex_indices” - _std::vector_ <std::size_t> of dimension 0

Note to developers: use underscore in names in place of spaces.

Constructor

array()

Overloaded versions

  • array(name, dim)

    Return array with given name (returning zero if data is not available)

    Arguments
    name (str)

    The name of the array.

    Returns
    numpy.array(int)

    The array.

  • array(name, dim)

    Return array with given name (returning zero if data is not available)

    Arguments
    name (str)

    The name of the array.

    Returns
    numpy.array(int)

    The array.

clear()

Clear all data

create_array()
create_mesh_function()

Overloaded versions

  • create_mesh_function(name)

    This function is no longer supported. It is retained to print an informative error message. It will be removed in the future.

  • create_mesh_function(name, dim)

    This function is no longer supported. It is retained to print an informative error message. It will be removed in the future.

erase_array()

Erase array with given name

Arguments
name (str)
The name of the array.
exists()

Check is array exists

Arguments
name (str)
The name of the array.
Returns
bool
True is array exists, false otherwise.
mesh_function()

This function is no longer supported. It is retained to print an informative error message. It will be removed in the future.

thisown

The membership flag