Dune::PDELab::DiscreteGridFunction< T, X > Class Template Reference

convert a grid function space and a coefficient vector into a grid function More...

#include <dune/pdelab/gridfunctionspace/gridfunctionspaceutilities.hh>

Public Types
typedef T::GridViewType	GridViewType
	Type of the GridView.
typedef LeafNodeTag	NodeTag
	The type tag that describes a LeafNode.

Public Member Functions
	DiscreteGridFunction (const GFS &gfs, const X &x_)
	Construct a DiscreteGridFunction. More...
	DiscreteGridFunction (std::shared_ptr< const GFS > gfs, std::shared_ptr< const X > x_)
	Construct a DiscreteGridFunction. More...
const Traits::GridViewType &	getGridView () const
	get a reference to the GridView
void	evaluate (const typename Traits::ElementType &e, const typename Traits::DomainType &x, typename Traits::RangeType &y) const
	Evaluate the GridFunction at given position. More...
Output::DataSetType	dataSetType () const
	Return the data set type of this function.
void	setDataSetType (Output::DataSetType dataSetType)
	Set the data set type of this function.

Static Public Attributes
static const bool	isLeaf = true
	Mark this class as a leaf in a dune-typetree.
static const bool	isPower = false
	Mark this class as a non power in the dune-typetree.
static const bool	isComposite = false
	Mark this class as a non composite in the dune-typetree.
static const std::size_t	CHILDREN = 0
	Leafs have no children.

Detailed Description

template<typename T, typename X>
class Dune::PDELab::DiscreteGridFunction< T, X >

convert a grid function space and a coefficient vector into a grid function

If a GridFunctionSpace with local-valued finite elements is used, this class can only be used for scalar functions, since for vector-valued local finite elements the values must be transformed, and the transformation depends on the type of element. For H(div) elements (Raviart-Thomas) look at DiscreteGridFunctionPiola.

If a GridFunctionSpace with finite elements using the new global-valued interface is used, this class can be used as-is even for vector-valued functions.

If you have a GridFunctionSpace tree of 1-component grid-function spaces, and want to collectively treat them as a vector-valued grid-function, look at VectorDiscreteGridFunction.

Template Parameters

T	Type of GridFunctionSpace
X	Type of coefficients vector

Examples

recipe-communication.cc, and recipe-operator-splitting.cc.

Constructor & Destructor Documentation

DiscreteGridFunction() [1/2]

template<typename T , typename X >

Dune::PDELab::DiscreteGridFunction< T, X >::DiscreteGridFunction ( const GFS &  gfs, const X &  x_  )

inline

Construct a DiscreteGridFunction.

Parameters

gfs	The GridFunctionsSpace
x_	The coefficients vector

DiscreteGridFunction() [2/2]

template<typename T , typename X >

Dune::PDELab::DiscreteGridFunction< T, X >::DiscreteGridFunction ( std::shared_ptr< const GFS >  gfs, std::shared_ptr< const X >  x_  )

inline

Construct a DiscreteGridFunction.

Parameters

gfs	shared pointer to the GridFunctionsSpace
x_	shared pointer to the coefficients vector

Member Function Documentation

evaluate()

void Dune::PDELab::GridFunctionInterface< GridFunctionTraits< T::Traits::GridViewType, BasisInterfaceSwitch< FiniteElementInterfaceSwitch< T::Traits::FiniteElementType >::Basis >::RangeField, BasisInterfaceSwitch< FiniteElementInterfaceSwitch< T::Traits::FiniteElementType >::Basis >::dimRange, BasisInterfaceSwitch< FiniteElementInterfaceSwitch< T::Traits::FiniteElementType >::Basis >::Range > , DiscreteGridFunction< T, X > >::evaluate ( const typename Traits::ElementType &  e, const typename Traits::DomainType &  x, typename Traits::RangeType &  y  ) const

inlineinherited

Evaluate the GridFunction at given position.

Evaluates components of the grid function at the given position and returns these values in a vector.

Parameters

[in]	e	The entity to evaluate on
[in]	x	The position in entity-local coordinates
[out]	y	The result of the evaluation

---

The documentation for this class was generated from the following file:

• dune/pdelab/gridfunctionspace/gridfunctionspaceutilities.hh