graphics::MatlabGraphics Class Reference

#include <matlab.hh>

Inheritance diagram for graphics::MatlabGraphics:

Public Member Functions
template<class G >
	MatlabGraphics (const concepts::Space< G > &spc, const std::string filename, const uint dim=2)
	MatlabGraphics (concepts::Mesh &msh, const std::string filename, const uint dim=2, const uint points=noPoints)
template<class F , class G >
	MatlabGraphics (const concepts::Space< G > &spc, const std::string filename, const concepts::Vector< F > &sol, const uint dim=2, const concepts::ElementFunction< F, G > *fun=0)
template<class F , class G >
	MatlabGraphics (const concepts::Space< G > &spc, const std::string filename, const concepts::ElementFormula< F, G > &frm, const uint dim=2)
template<class F >
	MatlabGraphics (concepts::Mesh &msh, const std::string filename, const concepts::PiecewiseFormulaBase< F > &frm, const uint dim=2, const uint points=noPoints)
template<class F , class G >
void	operator() (const concepts::Space< G > &spc, const concepts::Vector< F > &sol, const concepts::ElementFunction< F, G > *fun=0)
template<class F , class G >
void	operator() (const concepts::Space< G > &spc, const concepts::Formula< F > &frm)
template<class F , class G >
void	operator() (concepts::Mesh &msh, const concepts::Formula< F > &frm, const uint points=5)

Static Public Attributes
static uint	noPoints

Protected Member Functions
virtual std::ostream &	info (std::ostream &os) const
	Returns information in an output stream.

Protected Attributes
std::unique_ptr< std::ofstream >	ofs_
	Stream for output file.

Detailed Description

Draws a picture of data in Matlab format and stores the result in a single file.

The data is stored in a Matlab M-file by appending '.m'. The data can be read into Matlab by giving the file name as commands (and ommiting the ending '.m').

In general there is the FE-mesh (cells) and the output mesh, which in hp-FEM is given by the quadrature points. The data points are given in the vertices of the output mesh (x, y).

The FE-mesh of triangles or quadrilaterials is given by edgemsh, while vtxmsh consists of the vertices. For a FE-mesh with cells with only straight edges its more efficient to use vtxmsh instead of edgemesh. In each column there are the numbers of the vertices of one cell given, and can be plotted by

plot(x(edgemsh),y(edgemsh),'k');

The data values are in the variable u. For vector values spaces or repeated set of values the i.th component is U{i} (as well as in u(i,:)). In the following examples of scalar data one can replace u(msh) with U{i}(msh) for plotting one component of vector valued data.

Scalar data is plotted in the view from above with

patch(x(msh),y(msh),u(msh))

whereby in msh the output mesh is given.

Its possible to emphasize the FE-mesh in this diagramme with

patch(x(msh),y(msh),u(msh));
hold on
plot(x(edgemsh),y(edgemsh),'k');

whereby in edgemsh represents the points in the output mesh lying on the FE mesh.

As the command contour is only applicable to tensor product meshes, there is in general no contour plot possible.

Scalar data is plotted in the side view with

fill3(x(msh),y(msh),u(msh),u(msh));

Its possible to emphasize the FE-mesh in this diagramme with

fill3(x(msh),y(msh),u(msh),u(msh));
hold on
plot3(x(edgemsh),y(edgemsh),u(edgemsh),'k','linewidth',2)

The data can be shown unicoloured in side view with

fill3(x(msh),y(msh),u(msh),ones(size(msh)));

For vector valued spaces, the variables of the data values are U{1},..,U{n}.

2D Vectorial data is shown with

quiver(x,y,U{1},U{2});

Its possible to emphasize the FE-mesh in this diagramme with

quiver(x,y,U{1},U{2});
hold on
plot(x(edgemsh),y(edgemsh),'k');

Author

Kersten Schmidt, 2005

Examples

RobinBCs.cc, inhomDirichletBCs.cc, inhomDirichletBCsLagrange.cc, and inhomNeumannBCs.cc.

Definition at line 114 of file matlab.hh.

Constructor & Destructor Documentation

MatlabGraphics() [1/5]

template<class G >

graphics::MatlabGraphics::MatlabGraphics	(	const concepts::Space< G > &	spc,
		const std::string	filename,
		const uint	dim = 2
	)

Constructor for output of mesh only.

Parameters

spc	Space which holds the mesh
filename	Name base for the files to be written
dim	Spatial dimension of the cells

Definition at line 220 of file matlab.hh.

MatlabGraphics() [2/5]

graphics::MatlabGraphics::MatlabGraphics	(	concepts::Mesh &	msh,
		const std::string	filename,
		const uint	dim = 2,
		const uint	points = noPoints
	)

Constructor for output of mesh only.

Parameters

msh	Mesh
filename	Name base for the files to be written
dim	Spatial dimension of the cells

MatlabGraphics() [3/5]

template<class F , class G >

graphics::MatlabGraphics::MatlabGraphics	(	const concepts::Space< G > &	spc,
		const std::string	filename,
		const concepts::Vector< F > &	sol,
		const uint	dim = 2,
		const concepts::ElementFunction< F, G > *	fun = 0
	)

Constructor for output of solutions and functions of it.

Parameters

spc	Space on which the data should be plotted
filename	Name base for the files to be written
sol	The first solution set which should be plotted
dim	Spatial dimension of the cells
fun	Function of the FE function, e.g. itself.

Definition at line 234 of file matlab.hh.

MatlabGraphics() [4/5]

template<class F , class G >

graphics::MatlabGraphics::MatlabGraphics	(	const concepts::Space< G > &	spc,
		const std::string	filename,
		const concepts::ElementFormula< F, G > &	frm,
		const uint	dim = 2
	)

Constructor for output of a element formula

Parameters

spc	Space on which the data should be plotted
filename	Name base for the files to be written
frm	Element formula
dim	Spatial dimension of the cells

Definition at line 251 of file matlab.hh.

MatlabGraphics() [5/5]

template<class F >

graphics::MatlabGraphics::MatlabGraphics	(	concepts::Mesh &	msh,
		const std::string	filename,
		const concepts::PiecewiseFormulaBase< F > &	frm,
		const uint	dim = 2,
		const uint	points = noPoints
	)

Constructor for output of a scalar formula

Parameters

msh	Mesh
filename	Name base for the files to be written
frm	Formula
dim	Spatial dimension of the cells
points	Number of points inside the element (in one direction)

Definition at line 267 of file matlab.hh.

~MatlabGraphics()

virtual graphics::MatlabGraphics::~MatlabGraphics ( )

inlinevirtual

Definition at line 166 of file matlab.hh.

Member Function Documentation

info()

virtual std::ostream & graphics::MatlabGraphics::info ( std::ostream &  os ) const

protectedvirtual

Returns information in an output stream.

Reimplemented from graphics::OutputBase.

operator()() [1/3]

template<class F , class G >

void graphics::MatlabGraphics::operator()	(	concepts::Mesh &	msh,
		const concepts::Formula< F > &	frm,
		const uint	points = 5
	)

Application operator for output of a scalar formula

Parameters

msh	Mesh
frm	Formula

Definition at line 296 of file matlab.hh.

operator()() [2/3]

template<class F , class G >

void graphics::MatlabGraphics::operator()	(	const concepts::Space< G > &	spc,
		const concepts::Formula< F > &	frm
	)

Application operator for output of a scalar formula

Parameters

spc	Space on which the data should be plotted
frm	Formula

Definition at line 290 of file matlab.hh.

operator()() [3/3]

template<class F , class G >

void graphics::MatlabGraphics::operator()	(	const concepts::Space< G > &	spc,
		const concepts::Vector< F > &	sol,
		const concepts::ElementFunction< F, G > *	fun = 0
	)

Application operator for output of solutions and functions of it.

Parameters

spc	Space on which the data should be plotted
sol	The first solution set which should be plotted
fun	Function of the FE function, e.g. itself.

Definition at line 283 of file matlab.hh.

Member Data Documentation

noPoints

uint graphics::MatlabGraphics::noPoints

static

Definition at line 196 of file matlab.hh.

ofs_

std::unique_ptr<std::ofstream> graphics::OutputBase::ofs_

protectedinherited

Stream for output file.

Definition at line 83 of file basis.hh.

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

• graphics/matlab.hh