MeshQuality¶

class dolfin.cpp.mesh.MeshQuality¶

Bases: object

The class provides functions to quantify mesh quality.

static dihedral_angles()¶

Get internal dihedral angles of a tetrahedral cell.

Parameters:	Cell & cell (const) – double > & dh_angle (std::vector<) –
Return type:	void

static dihedral_angles_histogram_data()¶

Create (dihedral angles, number of cells) data for creating a histogram of dihedral

Parameters:	Mesh & mesh (const) – num_bins (std::size_t) –
Return type:	std::pair< std::vector< double >, std::vector< double > >

static dihedral_angles_matplotlib_histogram()¶

Create Matplotlib string to plot dihedral angles quality histogram.

Parameters:	Mesh & mesh (const) – num_intervals (std::size_t) –
Return type:	std::string

static dihedral_angles_min_max()¶

Get internal minimum and maximum dihedral angles of a 3D mesh.

Parameters:	Mesh & mesh (const) –
Return type:	std::pair< double, double >

static radius_ratio_histogram_data()¶

Create (ratio, number of cells) data for creating a histogram of cell quality

Parameters:	Mesh & mesh (const) – (const `Mesh` &) num_bins (std::size_t) – (std::size_t)
Return type:	std::pair< std::vector< double >, std::vector< double > >
Returns:	std::pair<std::vector<double>, std::vector<double>>

static radius_ratio_matplotlib_histogram()¶

Create Matplotlib string to plot cell quality histogram

Parameters:	Mesh & mesh (const) – (const `Mesh` &) num_intervals (std::size_t) – (std::size_t)
Return type:	std::string
Returns:	std::string

static radius_ratio_min_max()¶

Compute the minimum and maximum radius ratio of cells (across all processes)

Parameters:	Mesh & mesh (const) – (const `Mesh` &)
Return type:	std::pair< double, double >
Returns:	std::pair<double, double> The [minimum, maximum] cell radii ratio (geometric_dimension * * inradius / circumradius, geometric_dimension is normalization factor). It has range zero to one. Zero indicates a degenerate element.

static radius_ratios()¶

Compute the radius ratio for all cells.

Parameters:	const Mesh > mesh (std::shared_ptr<) – (std::shared_ptr<const Mesh>)
Return type:	MeshFunction< double >
Returns:	MeshFunction<double> The cell radius ratio radius ratio geometric_dimension * * inradius / circumradius (geometric_dimension is normalization factor). It has range zero to one. Zero indicates a degenerate element.