Dumux::Tabulated2DFunction< Scalar > Class Template Reference

Implements tabulation for a two-dimensional function. More...

#include <dumux/common/tabulated2dfunction.hh>

Description

template<class Scalar>
class Dumux::Tabulated2DFunction< Scalar >

Implements tabulation for a two-dimensional function.

This class can be used to tabulate a two dimensional function \(f(x, y)\) over the range \([x_{min}, x_{max}] \times [y_{min}, y_{max}]\). For this, the ranges of the \(x\) and \(y\) axes are divided into \(m\) and \(n\) sub-intervals and the values of \(f(x_i, y_j)\) need to be provided. Here, \(x_i\) and \(y_j\) are the largest positions of the \(i\)-th and \(j\)-th intervall. Between these sampling points this tabulation class uses linear interpolation.

Public Member Functions
	Tabulated2DFunction ()
	Default constructor. More...
	Tabulated2DFunction (Scalar xMin, Scalar xMax, int m, Scalar yMin, Scalar yMax, int n)
	Constructor where the tabulation parameters are already provided. More...
void	resize (Scalar xMin, Scalar xMax, int m, Scalar yMin, Scalar yMax, int n)
	Resize the tabulation to a new range. More...
Scalar	iToX (int i) const
	Return the position on the x-axis of the i-th interval. More...
Scalar	jToY (int j) const
	Return the position on the y-axis of the j-th interval. More...
Scalar	xToI (Scalar x) const
	Return the interval index of a given position on the x-axis. More...
Scalar	yToJ (Scalar y) const
	Return the interval index of a given position on the y-axis. More...
Scalar	getSamplePoint (int i, int j) const
	Get the value of the sample point which is at the intersection of the \(i\)-th interval of the x-Axis and the \(j\)-th of the y-Axis. More...
void	setSamplePoint (int i, int j, Scalar value)
	Set the value of the sample point which is at the intersection of the \(i\)-th interval of the x-Axis and the \(j\)-th of the y-Axis. More...
Scalar	get (Scalar x, Scalar y) const
	Return an interpolated value. More...
Scalar	operator() (Scalar x, Scalar y) const
	The () operator. More...

Constructor & Destructor Documentation

Tabulated2DFunction() [1/2]

template<class Scalar >

Dumux::Tabulated2DFunction< Scalar >::Tabulated2DFunction ( )

inline

Default constructor.

Tabulated2DFunction() [2/2]

template<class Scalar >

Dumux::Tabulated2DFunction< Scalar >::Tabulated2DFunction ( Scalar  xMin, Scalar  xMax, int  m, Scalar  yMin, Scalar  yMax, int  n  )

inline

Constructor where the tabulation parameters are already provided.

Member Function Documentation

get()

template<class Scalar >

Scalar Dumux::Tabulated2DFunction< Scalar >::get ( Scalar  x, Scalar  y  ) const

inline

Return an interpolated value.

getSamplePoint()

template<class Scalar >

Scalar Dumux::Tabulated2DFunction< Scalar >::getSamplePoint ( int  i, int  j  ) const

inline

Get the value of the sample point which is at the intersection of the \(i\)-th interval of the x-Axis and the \(j\)-th of the y-Axis.

iToX()

template<class Scalar >

Scalar Dumux::Tabulated2DFunction< Scalar >::iToX ( int  i ) const

inline

Return the position on the x-axis of the i-th interval.

jToY()

template<class Scalar >

Scalar Dumux::Tabulated2DFunction< Scalar >::jToY ( int  j ) const

inline

Return the position on the y-axis of the j-th interval.

operator()()

template<class Scalar >

Scalar Dumux::Tabulated2DFunction< Scalar >::operator() ( Scalar  x, Scalar  y  ) const

inline

The () operator.

This is just a convenience alias for get(x,y);

resize()

template<class Scalar >

void Dumux::Tabulated2DFunction< Scalar >::resize ( Scalar  xMin, Scalar  xMax, int  m, Scalar  yMin, Scalar  yMax, int  n  )

inline

Resize the tabulation to a new range.

Note

All previously specified sampling points become invalid after calling this method. You have to supply new ones.

setSamplePoint()

template<class Scalar >

void Dumux::Tabulated2DFunction< Scalar >::setSamplePoint ( int  i, int  j, Scalar  value  )

inline

Set the value of the sample point which is at the intersection of the \(i\)-th interval of the x-Axis and the \(j\)-th of the y-Axis.

xToI()

template<class Scalar >

Scalar Dumux::Tabulated2DFunction< Scalar >::xToI ( Scalar  x ) const

inline

Return the interval index of a given position on the x-axis.

This method returns a floating point number. The integer part should be interpreted as intervall, the decimal places are the position of the x value between the i-th and the (i+1)-th sample point.

yToJ()

template<class Scalar >

Scalar Dumux::Tabulated2DFunction< Scalar >::yToJ ( Scalar  y ) const

inline

Return the interval index of a given position on the y-axis.

This method returns a floating point number. The integer part should be interpreted as intervall, the decimal places are the position of the y value between the j-th and the (j+1)-th sample point.

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

• tabulated2dfunction.hh