gbl::VMatrix Class Reference

Simple Matrix based on std::vector<double> More...

#include <VMatrix.h>

Public Member Functions
unsigned int	getNumCols () const
	Get number of columns. More...
unsigned int	getNumRows () const
	Get number of rows. More...
double &	operator() (unsigned int i, unsigned int j)
	access element (i,j) More...
double	operator() (unsigned int i, unsigned int j) const
	access element (i,j) More...
VVector	operator* (const VVector &aVector) const
	Multiplication Matrix*Vector. More...
VMatrix	operator* (const VMatrix &aMatrix) const
	Multiplication Matrix*Matrix. More...
VMatrix	operator+ (const VMatrix &aMatrix) const
	Addition Matrix+Matrix. More...
VMatrix &	operator= (const VMatrix &aMatrix)
	Assignment Matrix=Matrix. More...
void	print () const
	Print matrix. More...
void	resize (const unsigned int nRows, const unsigned int nCols)
	Resize Matrix. More...
VMatrix	transpose () const
	Get transposed matrix. More...
	VMatrix (const unsigned int nRows=0, const unsigned int nCols=0)
	VMatrix (const VMatrix &aMatrix)
virtual	~VMatrix ()

Private Attributes
unsigned int	numCols
	Number of columns. More...
unsigned int	numRows
	Number of rows. More...
std::vector< double >	theVec
	Data. More...

Detailed Description

Simple Matrix based on std::vector<double>

Definition at line 41 of file VMatrix.h.

Constructor & Destructor Documentation

gbl::VMatrix::VMatrix	(	const unsigned int	nRows = 0,
		const unsigned int	nCols = 0
	)

Definition at line 15 of file VMatrix.cc.

                                                                   :
        numRows(nRows), numCols(nCols), theVec(nRows * nCols) {
}

gbl::VMatrix::VMatrix

(

const VMatrix &

aMatrix

)

Definition at line 19 of file VMatrix.cc.

                                       :
        numRows(aMatrix.numRows), numCols(aMatrix.numCols), theVec(
                aMatrix.theVec) {

}

gbl::VMatrix::~VMatrix ( )

virtual

Definition at line 25 of file VMatrix.cc.

                  {
}

Member Function Documentation

unsigned int gbl::VMatrix::getNumCols

(

)

const

Get number of columns.

Returns

Number of columns.

Definition at line 65 of file VMatrix.cc.

References numCols.

Referenced by gbl::VSymMatrix::operator*(), operator=(), and gbl::BorderedBandMatrix::solveBand().

                                       {
    return numCols;
}

unsigned int gbl::VMatrix::getNumRows

(

)

const

Get number of rows.

Returns

Number of rows.

Definition at line 57 of file VMatrix.cc.

References numRows.

Referenced by operator=(), and gbl::BorderedBandMatrix::solveBand().

                                       {
    return numRows;
}

double & gbl::VMatrix::operator() ( unsigned int  i, unsigned int  j  )

inline

access element (i,j)

Definition at line 83 of file VMatrix.h.

References numCols, and theVec.

                                                                       {
    return theVec[numCols * iRow + iCol];
}

double gbl::VMatrix::operator() ( unsigned int  i, unsigned int  j  ) const

inline

access element (i,j)

Definition at line 88 of file VMatrix.h.

References numCols, and theVec.

                                                                            {
    return theVec[numCols * iRow + iCol];
}

VVector gbl::VMatrix::operator*

(

const VVector &

aVector

)

const

Multiplication Matrix*Vector.

Definition at line 86 of file VMatrix.cc.

References i, j, numCols, numRows, and theVec.

                                                       {
    VVector aResult(numRows);
    for (unsigned int i = 0; i < this->numRows; ++i) {
        double sum = 0.0;
        for (unsigned int j = 0; j < this->numCols; ++j) {
            sum += theVec[numCols * i + j] * aVector(j);
        }
        aResult(i) = sum;
    }
    return aResult;
}

VMatrix gbl::VMatrix::operator*

(

const VMatrix &

aMatrix

)

const

Multiplication Matrix*Matrix.

Definition at line 99 of file VMatrix.cc.

References i, j, relval_steps::k, numCols, numRows, and theVec.

                                                       {

    VMatrix aResult(numRows, aMatrix.numCols);
    for (unsigned int i = 0; i < numRows; ++i) {
        for (unsigned int j = 0; j < aMatrix.numCols; ++j) {
            double sum = 0.0;
            for (unsigned int k = 0; k < numCols; ++k) {
                sum += theVec[numCols * i + k] * aMatrix(k, j);
            }
            aResult(i, j) = sum;
        }
    }
    return aResult;
}

VMatrix gbl::VMatrix::operator+

(

const VMatrix &

aMatrix

)

const

Addition Matrix+Matrix.

Definition at line 115 of file VMatrix.cc.

References i, j, numCols, numRows, and theVec.

                                                       {
    VMatrix aResult(numRows, numCols);
    for (unsigned int i = 0; i < numRows; ++i) {
        for (unsigned int j = 0; j < numCols; ++j) {
            aResult(i, j) = theVec[numCols * i + j] + aMatrix(i, j);
        }
    }
    return aResult;
}

VMatrix & gbl::VMatrix::operator=

(

const VMatrix &

aMatrix

)

Assignment Matrix=Matrix.

Definition at line 126 of file VMatrix.cc.

References getNumCols(), getNumRows(), i, j, numCols, numRows, and theVec.

                                                  {
    if (this != &aMatrix) {   // Gracefully handle self assignment
        numRows = aMatrix.getNumRows();
        numCols = aMatrix.getNumCols();
        theVec.resize(numRows * numCols);
        for (unsigned int i = 0; i < numRows; ++i) {
            for (unsigned int j = 0; j < numCols; ++j) {
                theVec[numCols * i + j] = aMatrix(i, j);
            }
        }
    }
    return *this;
}

void gbl::VMatrix::print

(

void

)

const

Print matrix.

Definition at line 70 of file VMatrix.cc.

References gather_cfg::cout, i, j, min(), numCols, numRows, and theVec.

Referenced by gbl::BorderedBandMatrix::printMatrix().

                          {
    std::cout << " VMatrix: " << numRows << "*" << numCols << std::endl;
    for (unsigned int i = 0; i < numRows; ++i) {
        for (unsigned int j = 0; j < numCols; ++j) {
            if (j % 5 == 0) {
                std::cout << std::endl << std::setw(4) << i << ","
                        << std::setw(4) << j << "-" << std::setw(4)
                        << std::min(j + 4, numCols) << ":";
            }
            std::cout << std::setw(13) << theVec[numCols * i + j];
        }
    }
    std::cout << std::endl << std::endl;
}

void gbl::VMatrix::resize	(	const unsigned int	nRows,
		const unsigned int	nCols
	)

Resize Matrix.

Parameters

[in]	nRows	Number of rows.
[in]	nCols	Number of columns.

Definition at line 33 of file VMatrix.cc.

References numCols, numRows, and theVec.

Referenced by Vispa.Gui.TextDialog.TextDialog::__init__(), Vispa.Plugins.ConfigEditor.ToolDialog.ToolDialog::__init__(), Vispa.Main.MainWindow.MainWindow::_loadIni(), gbl::BorderedBandMatrix::resize(), and Vispa.Gui.PortConnection.PointToPointConnection::updateConnection().

                                                                       {
    numRows = nRows;
    numCols = nCols;
    theVec.resize(nRows * nCols);
}

VMatrix gbl::VMatrix::transpose

(

)

const

Get transposed matrix.

Returns

Transposed matrix.

Definition at line 43 of file VMatrix.cc.

References i, j, numCols, numRows, and theVec.

Referenced by gbl::BorderedBandMatrix::solveAndInvertBorderedBand().

                                 {
    VMatrix aResult(numCols, numRows);
    for (unsigned int i = 0; i < numRows; ++i) {
        for (unsigned int j = 0; j < numCols; ++j) {
            aResult(j, i) = theVec[numCols * i + j];
        }
    }
    return aResult;
}

Member Data Documentation

unsigned int gbl::VMatrix::numCols

private

Number of columns.

Definition at line 59 of file VMatrix.h.

Referenced by getNumCols(), operator()(), operator*(), operator+(), operator=(), print(), resize(), and transpose().

unsigned int gbl::VMatrix::numRows

private

Number of rows.

Definition at line 58 of file VMatrix.h.

Referenced by getNumRows(), operator*(), operator+(), operator=(), print(), resize(), and transpose().

std::vector<double> gbl::VMatrix::theVec

private

Data.

Definition at line 60 of file VMatrix.h.

Referenced by operator()(), operator*(), operator+(), operator=(), print(), resize(), and transpose().