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

#include <VMatrix.h>

Public Member Functions
	VMatrix (const unsigned int nRows=0, const unsigned int nCols=0)

	VMatrix (const VMatrix &aMatrix)

virtual	~VMatrix ()

void	resize (const unsigned int nRows, const unsigned int nCols)
	Resize Matrix.

VMatrix	transpose () const
	Get transposed matrix.

double &	operator() (unsigned int i, unsigned int j)
	access element (i,j)

double	operator() (unsigned int i, unsigned int j) const
	access element (i,j)

unsigned int	getNumRows () const
	Get number of rows.

unsigned int	getNumCols () const
	Get number of columns.

void	print () const
	Print matrix.

VVector	operator* (const VVector &aVector) const
	Multiplication Matrix*Vector.

VMatrix	operator* (const VMatrix &aMatrix) const
	Multiplication Matrix*Matrix.

VMatrix	operator+ (const VMatrix &aMatrix) const
	Addition Matrix+Matrix.

VMatrix &	operator= (const VMatrix &aMatrix)
	Assignment Matrix=Matrix.

Private Attributes
unsigned int	numRows
	Number of rows.

unsigned int	numCols
	Number of columns.

std::vector< double >	theVec
	Data.

Detailed Description

Simple Matrix based on std::vector<double>

Definition at line 42 of file VMatrix.h.

Constructor & Destructor Documentation

◆ VMatrix() [1/2]

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) {
}

◆ VMatrix() [2/2]

gbl::VMatrix::VMatrix ( const VMatrix & aMatrix )

Definition at line 19 of file VMatrix.cc.

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

◆ ~VMatrix()

gbl::VMatrix::~VMatrix ( )

virtual

Definition at line 25 of file VMatrix.cc.

25 {

26}

Member Function Documentation

◆ getNumCols()

unsigned int gbl::VMatrix::getNumCols ( ) const

Get number of columns.

Returns: Number of columns.

Definition at line 65 of file VMatrix.cc.

                                       {
    return numCols;
}

◆ getNumRows()

unsigned int gbl::VMatrix::getNumRows ( ) const

Get number of rows.

Returns: Number of rows.

Definition at line 57 of file VMatrix.cc.

                                       {
    return numRows;
}

◆ operator()() [1/2]

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

inline

access element (i,j)

Definition at line 84 of file VMatrix.h.

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

◆ operator()() [2/2]

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

inline

access element (i,j)

Definition at line 89 of file VMatrix.h.

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

◆ operator*() [1/2]

VMatrix gbl::VMatrix::operator* ( const VMatrix & aMatrix ) const

Multiplication Matrix*Matrix.

Definition at line 99 of file VMatrix.cc.

                                                       {
 
    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;
}

◆ operator*() [2/2]

VVector gbl::VMatrix::operator* ( const VVector & aVector ) const

Multiplication Matrix*Vector.

Definition at line 86 of file VMatrix.cc.

                                                       {
    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;
}

◆ operator+()

VMatrix gbl::VMatrix::operator+ ( const VMatrix & aMatrix ) const

Addition Matrix+Matrix.

Definition at line 115 of file VMatrix.cc.

                                                       {
    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;
}

◆ operator=()

VMatrix & gbl::VMatrix::operator= ( const VMatrix & aMatrix )

Assignment Matrix=Matrix.

Definition at line 126 of file VMatrix.cc.

                                                  {
    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;
}

◆ print()

void gbl::VMatrix::print ( ) const

Print matrix.

Definition at line 70 of file VMatrix.cc.

                          {
    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;
}

◆ resize()

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.

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

◆ transpose()

VMatrix gbl::VMatrix::transpose ( ) const

Get transposed matrix.

Returns: Transposed matrix.

Definition at line 43 of file VMatrix.cc.

                                 {
    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

◆ numCols

unsigned int gbl::VMatrix::numCols

private

Number of columns.

Definition at line 60 of file VMatrix.h.

◆ numRows

unsigned int gbl::VMatrix::numRows

private

Number of rows.

Definition at line 59 of file VMatrix.h.

◆ theVec

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

private

Data.

Definition at line 61 of file VMatrix.h.

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

genfit/GBL/include/VMatrix.h
genfit/GBL/src/VMatrix.cc

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ VMatrix() [1/2]

◆ VMatrix() [2/2]

◆ ~VMatrix()

Member Function Documentation

◆ getNumCols()

◆ getNumRows()

◆ operator()() [1/2]

◆ operator()() [2/2]

◆ operator*() [1/2]

◆ operator*() [2/2]

◆ operator+()

◆ operator=()

◆ print()

◆ resize()

◆ transpose()

Member Data Documentation

◆ numCols

◆ numRows

◆ theVec