Vector¶

class dolfin.cpp.la.Vector(*args)¶

Bases: dolfin.cpp.la.GenericVector

This class provides the default DOLFIN vector class, based on the default DOLFIN linear algebra backend.

Create a Vector from a GenericVector .

Parameters:	GenericVector & x (const) –

add_local()¶

Add block of values using local indices.

Parameters:	*double block** (const) – m (std::size_t) – *dolfin::la_index rows** (const) –
Return type:	void

gather()¶

Gather entries (given by global indices) into local vector x

Parameters:	& x (GenericVector) – std::vector< dolfin::la_index > & indices (const) –
Return type:	void

get_local()¶

Get block of values using local indices (values must all live on the local process)

Parameters:	* block (double) – m (std::size_t) – *dolfin::la_index rows** (const) –
Return type:	void

init()¶

Initialize vector with given ownership range and with ghost values

Parameters:	std::size_t, std::size_t > range (std::pair<) – std::vector< std::size_t > & local_to_global_map (const) – std::vector< la_index > & ghost_indices (const) –
Return type:	void

set_local()¶

Set block of values using local indices.

Parameters:	*double block** (const) – m (std::size_t) – *dolfin::la_index rows** (const) –
Return type:	void

shared_instance()¶

Return concrete shared ptr instance / unwrap (const version)

Return type:	std::shared_ptr< const LinearAlgebraObject >

sum()¶

Return sum of values of vector.

Return type:	double