Visual Servoing Platform  version 3.6.1 under development (2024-06-15)
vpSubRowVector Class Reference

#include <visp3/core/vpSubRowVector.h>

+ Inheritance diagram for vpSubRowVector:

Public Member Functions

 vpSubRowVector ()
 
 vpSubRowVector (vpRowVector &v, const unsigned int &offset, const unsigned int &ncols)
 
virtual ~vpSubRowVector () vp_override
 
void checkParentStatus () const
 
void init (vpRowVector &v, const unsigned int &offset, const unsigned int &ncols)
 
vpSubRowVectoroperator= (const vpSubRowVector &B)
 
vpSubRowVectoroperator= (const vpRowVector &B)
 
vpSubRowVectoroperator= (const vpMatrix &B)
 
vpSubRowVectoroperator= (const double &x)
 
void clear ()
 
std::ostream & cppPrint (std::ostream &os, const std::string &matrixName="A", bool octet=false) const
 
std::ostream & csvPrint (std::ostream &os) const
 
void deg2rad ()
 
vpRowVector extract (unsigned int c, unsigned int rowsize) const
 
double frobeniusNorm () const
 
void init (const vpRowVector &v, unsigned int c, unsigned int ncols)
 
void insert (unsigned int i, const vpRowVector &v)
 
std::ostream & maplePrint (std::ostream &os) const
 
std::ostream & matlabPrint (std::ostream &os) const
 
vpRowVectornormalize ()
 
vpRowVectornormalize (vpRowVector &x) const
 
double & operator[] (unsigned int n)
 
const double & operator[] (unsigned int n) const
 
bool operator== (const vpRowVector &v) const
 
bool operator!= (const vpRowVector &v) const
 
double operator* (const vpColVector &x) const
 
vpRowVector operator* (const vpMatrix &M) const
 
vpRowVector operator* (double x) const
 
vpRowVectoroperator*= (double x)
 
vpRowVector operator/ (double x) const
 
vpRowVectoroperator/= (double x)
 
vpRowVector operator+ (const vpRowVector &v) const
 
vpRowVectoroperator+= (vpRowVector v)
 
vpRowVector operator- (const vpRowVector &v) const
 
vpRowVector operator- () const
 
vpRowVectoroperator-= (vpRowVector v)
 
vpRowVectoroperator<< (const vpRowVector &v)
 
vpRowVectoroperator<< (double val)
 
vpRowVectoroperator, (double val)
 
int print (std::ostream &s, unsigned int length, char const *intro=0) const
 
void rad2deg ()
 
void reshape (vpMatrix &M, const unsigned int &nrows, const unsigned int &ncols)
 
vpMatrix reshape (unsigned int nrows, unsigned int ncols)
 
void resize (unsigned int i, bool flagNullify=true)
 
void resize (unsigned int nrows, unsigned int ncols, bool flagNullify)
 
void stack (double d)
 
void stack (const vpRowVector &v)
 
double sum () const
 
double sumSquare () const
 
vpColVector t () const
 
std::vector< double > toStdVector () const
 
vpColVector transpose () const
 
void transpose (vpColVector &v) const
 
Inherited functionalities from vpArray2D
void insert (const vpArray2D< double > &A, unsigned int r, unsigned int c)
 
bool operator== (const vpArray2D< double > &A) const
 
bool operator!= (const vpArray2D< double > &A) const
 
void resize (unsigned int nrows, unsigned int ncols, bool flagNullify=true, bool recopy_=true)
 
unsigned int getCols () const
 
double getMaxValue () const
 
double getMinValue () const
 
unsigned int getRows () const
 
unsigned int size () const
 
vpArray2D< double > hadamard (const vpArray2D< double > &m) const
 

Static Public Member Functions

static vpRowVector stack (const vpRowVector &A, const vpRowVector &B)
 
static void stack (const vpRowVector &A, const vpRowVector &B, vpRowVector &C)
 
static double mean (const vpRowVector &v)
 
static double median (const vpRowVector &v)
 
static double stdev (const vpRowVector &v, bool useBesselCorrection=false)
 

Public Attributes

double * data
 

Protected Attributes

unsigned int m_pColNum
 
vpRowVectorm_parent
 
unsigned int rowNum
 
unsigned int colNum
 
double ** rowPtrs
 
unsigned int dsize
 

Related Functions

(Note that these are not member functions.)

bool operator== (const vpArray2D< double > &A) const
 
bool operator== (const vpArray2D< float > &A) const
 
enum  vpGEMMmethod
 
void vpGEMM (const vpArray2D< double > &A, const vpArray2D< double > &B, const double &alpha, const vpArray2D< double > &C, const double &beta, vpArray2D< double > &D, const unsigned int &ops=0)
 

Deprecated functions

vp_deprecated void init ()
 
vp_deprecated void stackMatrices (const vpRowVector &r)
 
vp_deprecated void setIdentity (const double &val=1.0)
 
vp_deprecated double euclideanNorm () const
 
static vp_deprecated vpRowVector stackMatrices (const vpRowVector &A, const vpRowVector &B)
 
static vp_deprecated void stackMatrices (const vpRowVector &A, const vpRowVector &B, vpRowVector &C)
 

Inherited I/O from vpArray2D with Static Public Member Functions

vpArray2D< double > insert (const vpArray2D< double > &A, const vpArray2D< double > &B, unsigned int r, unsigned int c)
 
static void insert (const vpArray2D< double > &A, const vpArray2D< double > &B, vpArray2D< double > &C, unsigned int r, unsigned int c)
 
static bool load (const std::string &filename, vpArray2D< double > &A, bool binary=false, char *header=nullptr)
 
static bool loadYAML (const std::string &filename, vpArray2D< double > &A, char *header=nullptr)
 
static bool save (const std::string &filename, const vpArray2D< double > &A, bool binary=false, const char *header="")
 
static bool saveYAML (const std::string &filename, const vpArray2D< double > &A, const char *header="")
 
static vpArray2D< double > conv2 (const vpArray2D< double > &M, const vpArray2D< double > &kernel, const std::string &mode)
 
static void conv2 (const vpArray2D< double > &M, const vpArray2D< double > &kernel, vpArray2D< double > &res, const std::string &mode)
 

Detailed Description

This class provides a mask on a vpRowVector. It has internally a pointer to the parent vpRowVector. All properties of vpRowVector are available with a vpSubRowVector.

See also
vpMatrix vpColVector vpRowVector

Definition at line 57 of file vpSubRowVector.h.

Constructor & Destructor Documentation

◆ vpSubRowVector() [1/2]

BEGIN_VISP_NAMESPACE vpSubRowVector::vpSubRowVector ( )

Default constructor that creates an empty vector.

Definition at line 41 of file vpSubRowVector.cpp.

◆ vpSubRowVector() [2/2]

vpSubRowVector::vpSubRowVector ( vpRowVector v,
const unsigned int &  offset,
const unsigned int &  ncols 
)

Construct a sub-row vector from a parent row vector.

Parameters
v: parent row vector.
offset: offset where the sub-row vector starts in the parent row vector.
ncols: size of the sub-row vector.

Definition at line 49 of file vpSubRowVector.cpp.

References vpRowVector::init().

◆ ~vpSubRowVector()

vpSubRowVector::~vpSubRowVector ( )
virtual

Destructor that set the pointer to the parent row vector to nullptr.

Definition at line 97 of file vpSubRowVector.cpp.

References vpArray2D< double >::data.

Member Function Documentation

◆ checkParentStatus()

void vpSubRowVector::checkParentStatus ( ) const

This method can be used to detect if the parent row vector always exits or its size have not changed. If this not the case an exception is thrown.

Definition at line 104 of file vpSubRowVector.cpp.

References vpArray2D< double >::data, vpException::dimensionError, vpException::fatalError, vpArray2D< Type >::getCols(), m_parent, and m_pColNum.

◆ clear()

void vpRowVector::clear ( )
inlineinherited

Removes all elements from the vector (which are destroyed), leaving the container with a size of 0.

Examples
testRowVector.cpp.

Definition at line 136 of file vpRowVector.h.

◆ conv2() [1/2]

vpArray2D< double > vpArray2D< double >::conv2 ( const vpArray2D< Type > &  M,
const vpArray2D< Type > &  kernel,
const std::string &  mode 
)
staticinherited

Perform a 2D convolution similar to Matlab conv2 function: $ M \star kernel $.

Parameters
M: First matrix.
kernel: Second matrix.
mode: Convolution mode: "full" (default), "same", "valid".
Convolution mode: full, same, valid (image credit: Theano doc).
Note
This is a very basic implementation that does not use FFT.
Examples
testMatrixConvolution.cpp.

Definition at line 1040 of file vpArray2D.h.

◆ conv2() [2/2]

void vpArray2D< double >::conv2 ( const vpArray2D< Type > &  M,
const vpArray2D< Type > &  kernel,
vpArray2D< Type > &  res,
const std::string &  mode 
)
staticinherited

Perform a 2D convolution similar to Matlab conv2 function: $ M \star kernel $.

Parameters
M: First array.
kernel: Second array.
res: Result.
mode: Convolution mode: "full" (default), "same", "valid".
Convolution mode: full, same, valid (image credit: Theano doc).
Note
This is a very basic implementation that does not use FFT.

Definition at line 1054 of file vpArray2D.h.

◆ cppPrint()

std::ostream & vpRowVector::cppPrint ( std::ostream &  os,
const std::string &  matrixName = "A",
bool  octet = false 
) const
inherited

Print to be used as part of a C++ code later.

Parameters
os: the stream to be printed in.
matrixName: name of the row vector, "A" by default.
octet: if false, print using double, if true, print byte per byte each bytes of the double array.

The following code shows how to use this function:

#include <visp3/core/vpRowVector.h>
int main()
{
for (unsigned int i=0; i<r.size(); i++)
r[i] = i;
r.cppPrint(std::cout, "r");
}
Implementation of row vector and the associated operations.
Definition: vpRowVector.h:110

It produces the following output that could be copy/paste in a C++ code:

r[0] = 0;
r[1] = 1;
r[2] = 2;

Definition at line 1226 of file vpRowVector.cpp.

References vpArray2D< double >::getCols().

◆ csvPrint()

std::ostream & vpRowVector::csvPrint ( std::ostream &  os) const
inherited

Print/save a row vector in csv format.

The following code

#include <visp3/core/vpRowVector.h>
int main()
{
std::ofstream ofs("log.csv", std::ofstream::out);
for (unsigned int i=0; i<r.size(); i++)
r[i] = i;
r.csvPrint(ofs);
ofs.close();
}

produces log.csv file that contains:

0, 1, 2

Definition at line 1270 of file vpRowVector.cpp.

References vpArray2D< double >::getCols().

◆ deg2rad()

void vpRowVector::deg2rad ( )
inlineinherited

Convert a column vector containing angles in degrees into radians.

See also
rad2deg()

Definition at line 159 of file vpRowVector.h.

◆ euclideanNorm()

double vpRowVector::euclideanNorm ( ) const
inherited
Deprecated:
This function is deprecated. You should rather use frobeniusNorm().

Compute and return the Euclidean norm also called Frobenius norm $ ||v|| = \sqrt{ \sum{v_{i}^2}} $.

Returns
The Euclidean norm if the vector is initialized, 0 otherwise.
See also
frobeniusNorm()

Definition at line 1141 of file vpRowVector.cpp.

References vpRowVector::frobeniusNorm().

◆ extract()

vpRowVector vpRowVector::extract ( unsigned int  c,
unsigned int  rowsize 
) const
inlineinherited

Extract a sub-row vector from a row vector.

Parameters
c: Index of the column corresponding to the first element of the vector to extract.
rowsize: Size of the vector to extract.
Exceptions
vpException::fatalErrorIf the vector to extract is not contained in the original one.
for (unsigned int i=0; i<4; ++i)
r1.stack(i);
// r1 is equal to [0 1 2 3]
vpRowVector r2 = r1.extract(1, 3);
// r2 is equal to [1 2 3]
void stack(double d)
vpRowVector extract(unsigned int c, unsigned int rowsize) const
Definition: vpRowVector.h:184
Examples
testRowVector.cpp.

Definition at line 184 of file vpRowVector.h.

References vpException::fatalError.

◆ frobeniusNorm()

double vpRowVector::frobeniusNorm ( ) const
inherited

Compute and return the Frobenius norm $ ||v|| = \sqrt{ \sum{v_{i}^2}} $.

Returns
The Frobenius norm if the vector is initialized, 0 otherwise.

Definition at line 1124 of file vpRowVector.cpp.

References vpRowVector::sumSquare().

Referenced by vpRowVector::euclideanNorm().

◆ getCols()

◆ getMaxValue()

double vpArray2D< double >::getMaxValue
inherited

Return the array max value.

Examples
servoMomentImage.cpp.

Definition at line 332 of file vpArray2D.h.

◆ getMinValue()

double vpArray2D< double >::getMinValue
inherited

Return the array min value.

Examples
servoMomentImage.cpp.

Definition at line 334 of file vpArray2D.h.

◆ getRows()

◆ hadamard()

vpArray2D< double > vpArray2D< double >::hadamard ( const vpArray2D< Type > &  m) const
inherited

Compute the Hadamard product (element wise matrix multiplication).

Parameters
m: Second matrix;
Returns
m1.hadamard(m2) The Hadamard product : $ m1 \circ m2 = (m1 \circ m2)_{i,j} = (m1)_{i,j} (m2)_{i,j} $
Examples
testArray2D.cpp.

Definition at line 631 of file vpArray2D.h.

◆ init() [1/3]

vp_deprecated void vpRowVector::init ( )
inlineinherited
Deprecated:
Provided only for compat with previous releases. This function does nothing.

Definition at line 312 of file vpRowVector.h.

Referenced by vpRowVector::vpRowVector(), and vpSubRowVector().

◆ init() [2/3]

void vpRowVector::init ( const vpRowVector v,
unsigned int  c,
unsigned int  ncols 
)
inherited

Initialize the row vector from a part of an input row vector v.

Parameters
v: Input row vector used for initialization.
c: column index in v that corresponds to the first element of the row vector to construct.
ncols: Number of columns of the constructed row vector.

The sub-vector starting from v[c] element and ending on v[c+ncols-1] element is used to initialize the constructed row vector.

The following code shows how to use this function:

#include <visp3/core/vpRowVector.h>
int main()
{
int val = 0;
for(size_t i=0; i<v.getCols(); i++) {
v[i] = val++;
}
std::cout << "v: " << v << std::endl;
w.init(v, 1, 2);
std::cout << "w: " << w << std::endl;
}
void init(const vpRowVector &v, unsigned int c, unsigned int ncols)

It produces the following output:

v: 0 1 2 3
w: 1 2
Examples
testRowVector.cpp.

Definition at line 1179 of file vpRowVector.cpp.

References vpException::dimensionError, vpArray2D< Type >::getCols(), vpRowVector::resize(), and vpArray2D< double >::rowPtrs.

◆ init() [3/3]

void vpSubRowVector::init ( vpRowVector v,
const unsigned int &  offset,
const unsigned int &  ncols 
)

Initialize a sub-row vector from a parent row vector.

Parameters
v: parent row vector.
offset: offset where the sub-row vector starts in the parent row vector.
ncols: size of the sub-row vector.

Definition at line 61 of file vpSubRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, vpArray2D< Type >::data, vpException::dimensionError, vpArray2D< double >::dsize, vpException::fatalError, vpArray2D< Type >::getCols(), m_parent, m_pColNum, vpArray2D< double >::rowNum, and vpArray2D< double >::rowPtrs.

◆ insert() [1/3]

vpArray2D< double > vpArray2D< double >::insert ( const vpArray2D< Type > &  A,
const vpArray2D< Type > &  B,
unsigned int  r,
unsigned int  c 
)
inherited

Insert array B in array A at the given position.

Parameters
A: Main array.
B: Array to insert.
r: Index of the row where to add the array.
c: Index of the column where to add the array.
Returns
Array with B insert in A.
Warning
Throw exception if the sizes of the arrays do not allow the insertion.

Definition at line 1068 of file vpArray2D.h.

◆ insert() [2/3]

void vpArray2D< double >::insert ( const vpArray2D< Type > &  A,
unsigned int  r,
unsigned int  c 
)
inlineinherited

Insert array A at the given position in the current array.

Warning
Throw vpException::dimensionError if the dimensions of the matrices do not allow the operation.
Parameters
A: The array to insert.
r: The index of the row to begin to insert data.
c: The index of the column to begin to insert data.

Definition at line 487 of file vpArray2D.h.

◆ insert() [3/3]

void vpRowVector::insert ( unsigned int  i,
const vpRowVector v 
)
inherited

Insert a row vector.

Parameters
i: Index of the first element to introduce. This index starts from 0.
v: Row vector to insert.

The following example shows how to use this function:

#include <visp3/core/vpRowVector.h>
int main()
{
for (unsigned int i=0; i < v.size(); i++)
v[i] = i;
std::cout << "v: " << v << std::endl;
for (unsigned int i=0; i < w.size(); i++)
w[i] = i+10;
std::cout << "w: " << w << std::endl;
v.insert(1, w);
std::cout << "v: " << v << std::endl;
}

It produces the following output:

v: 0 1 2 3
w: 10 11
v: 0 10 11 3

Definition at line 771 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpException::dimensionError, vpArray2D< Type >::getCols(), and vpArray2D< Type >::size().

◆ load()

static bool vpArray2D< double >::load ( const std::string &  filename,
vpArray2D< Type > &  A,
bool  binary = false,
char *  header = nullptr 
)
inlinestaticinherited

Load a matrix from a file.

Parameters
filename: Absolute file name.
A: Array to be loaded
binary: If true the matrix is loaded from a binary file, else from a text file.
header: Header of the file is loaded in this parameter.
Returns
Returns true if success.
See also
save()

Definition at line 659 of file vpArray2D.h.

◆ loadYAML()

static bool vpArray2D< double >::loadYAML ( const std::string &  filename,
vpArray2D< Type > &  A,
char *  header = nullptr 
)
inlinestaticinherited

Load an array from a YAML-formatted file.

Parameters
filename: absolute file name.
A: array to be loaded from the file.
header: header of the file is loaded in this parameter.
Returns
Returns true on success.
See also
saveYAML()
Examples
servoFlirPtuIBVS.cpp, servoFrankaIBVS.cpp, servoFrankaPBVS.cpp, servoUniversalRobotsIBVS.cpp, servoUniversalRobotsPBVS.cpp, tutorial-flir-ptu-ibvs.cpp, tutorial-hsv-segmentation-pcl-viewer.cpp, tutorial-hsv-segmentation-pcl.cpp, and tutorial-hsv-segmentation.cpp.

Definition at line 773 of file vpArray2D.h.

◆ maplePrint()

std::ostream & vpRowVector::maplePrint ( std::ostream &  os) const
inherited

Print using Maple syntax, to copy/paste in Maple later.

The following code

#include <visp3/core/vpRowVector.h>
int main()
{
for (unsigned int i=0; i<r.size(); i++)
r[i] = i;
std::cout << "r = "; r.maplePrint(std::cout);
}

produces this output:

r = ([
[0, 1, 2, ],
])

that could be copy/paste in Maple.

Definition at line 1306 of file vpRowVector.cpp.

References vpArray2D< double >::getCols().

◆ matlabPrint()

std::ostream & vpRowVector::matlabPrint ( std::ostream &  os) const
inherited

Print using Matlab syntax, to copy/paste in Matlab later.

The following code

#include <visp3/core/vpRowVector.h>
int main()
{
for (unsigned int i=0; i<r.size(); i++)
r[i] = i;
std::cout << "r = "; r.matlabPrint(std::cout);
}

produces this output:

r = [ 0, 1, 2, ]

that could be copy/paste in Matlab:

>> r = [ 0, 1, 2, ]
r =
0 1 2
>>

Definition at line 1349 of file vpRowVector.cpp.

References vpArray2D< double >::getCols().

◆ mean()

double vpRowVector::mean ( const vpRowVector v)
staticinherited

Compute the mean value of all the elements of the vector.

Examples
testRowVector.cpp.

Definition at line 925 of file vpRowVector.cpp.

References vpArray2D< Type >::data, vpException::dimensionError, vpArray2D< Type >::getCols(), and vpArray2D< Type >::size().

Referenced by vpRowVector::stdev().

◆ median()

double vpRowVector::median ( const vpRowVector v)
staticinherited

Compute the median value of all the elements of the vector.

Examples
testRowVector.cpp.

Definition at line 944 of file vpRowVector.cpp.

References vpArray2D< Type >::colNum, vpArray2D< Type >::data, vpException::dimensionError, vpMath::getMedian(), and vpArray2D< Type >::size().

◆ normalize() [1/2]

vpRowVector & vpRowVector::normalize ( )
inherited

Normalise the vector modifying the vector as:

\[ {\bf x} = \frac{{\bf x}}{\sqrt{\sum_{i=1}^{n}x^2_i}} \]

where $x_i$ is an element of the row vector $\bf x$.

Examples
testRowVector.cpp.

Definition at line 647 of file vpRowVector.cpp.

References vpRowVector::sumSquare().

◆ normalize() [2/2]

vpRowVector & vpRowVector::normalize ( vpRowVector x) const
inherited

Normalize the vector given as input parameter and return the normalized vector:

\[ {\bf x} = \frac{{\bf x}}{\sqrt{\sum_{i=1}^{n}x^2_i}} \]

where $x_i$ is an element of the row vector $\bf x$.

Definition at line 632 of file vpRowVector.cpp.

References vpRowVector::sumSquare().

◆ operator!=() [1/2]

bool operator!= ( const vpArray2D< Type > &  A) const
inherited

Not equal to comparison operator of a 2D array.

Definition at line 513 of file vpArray2D.h.

◆ operator!=() [2/2]

bool vpRowVector::operator!= ( const vpRowVector v) const
inherited

Definition at line 195 of file vpRowVector.cpp.

◆ operator*() [1/3]

double vpRowVector::operator* ( const vpColVector x) const
inherited

Multiply a row vector by a column vector.

Parameters
x: Column vector.
Warning
The number of elements of the two vectors must be equal.
Exceptions
vpException::dimensionError: If the number of elements of the two vectors is not the same.
Returns
A scalar.

Definition at line 211 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpException::dimensionError, vpArray2D< double >::getCols(), and vpArray2D< Type >::getRows().

◆ operator*() [2/3]

vpRowVector vpRowVector::operator* ( const vpMatrix M) const
inherited

Multiply a row vector by a matrix.

Parameters
M: Matrix.
Warning
The number of elements of the row vector must be equal to the number of rows of the matrix.
Exceptions
vpException::dimensionErrorIf the number of elements of the row vector is not equal to the number of rows of the matrix.
Returns
The resulting row vector.

Definition at line 241 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, vpException::dimensionError, vpArray2D< Type >::getCols(), and vpArray2D< Type >::getRows().

◆ operator*() [3/3]

vpRowVector vpRowVector::operator* ( double  x) const
inherited

Operator that allows to multiply each element of a row vector by a scalar.

Parameters
x: The scalar.
Returns
The row vector multiplied by the scalar. The current row vector (*this) is unchanged.
v[0] = 1;
v[1] = 2;
v[2] = 3;
vpRowVector w = v * 3;
// v is unchanged
// w is now equal to : [3 6 9]

Definition at line 282 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, and vpArray2D< Type >::data.

◆ operator*=()

vpRowVector & vpRowVector::operator*= ( double  x)
inherited

Operator that allows to multiply each element of a row vector by a scalar.

Parameters
x: The scalar.
Returns
The row vector multiplied by the scalar.
v[0] = 1;
v[1] = 2;
v[2] = 3;
v *= 3;
// v is now equal to : [3 6 9]

Definition at line 312 of file vpRowVector.cpp.

References vpArray2D< double >::colNum.

◆ operator+()

vpRowVector vpRowVector::operator+ ( const vpRowVector v) const
inherited

Operator that allows to add to row vectors that have the same size.

Exceptions
vpException::dimensionErrorIf the vectors size differ.

Definition at line 425 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpException::dimensionError, vpArray2D< Type >::getCols(), and vpArray2D< double >::getCols().

◆ operator+=()

vpRowVector & vpRowVector::operator+= ( vpRowVector  v)
inherited

Operator that allows to add two row vectors that have the same size.

Exceptions
vpException::dimensionErrorIf the size of the two vectors differ.

Definition at line 445 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpException::dimensionError, vpArray2D< Type >::getCols(), and vpArray2D< double >::getCols().

◆ operator,()

vpRowVector & vpRowVector::operator, ( double  val)
inherited

◆ operator-() [1/2]

vpRowVector vpRowVector::operator- ( void  ) const
inherited

Operator that allows to negate all the row vector elements.

vpRowVector r(3, 1);
// r contains [1 1 1]
vpRowVector v = -r;
// v contains [-1 -1 -1]

Definition at line 388 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, and vpArray2D< Type >::data.

◆ operator-() [2/2]

vpRowVector vpRowVector::operator- ( const vpRowVector m) const
inherited

Operator that allows to subtract to row vectors that have the same size.

Exceptions
vpException::dimensionErrorIf the vectors size differ.

Definition at line 406 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpException::dimensionError, vpArray2D< Type >::getCols(), and vpArray2D< double >::getCols().

◆ operator-=()

vpRowVector & vpRowVector::operator-= ( vpRowVector  v)
inherited

Operator that allows to subtract two row vectors that have the same size.

Exceptions
vpException::dimensionErrorIf the size of the two vectors differ.

Definition at line 463 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpException::dimensionError, vpArray2D< Type >::getCols(), and vpArray2D< double >::getCols().

◆ operator/()

vpRowVector vpRowVector::operator/ ( double  x) const
inherited

Operator that allows to divide each element of a row vector by a scalar.

Parameters
x: The scalar.
Returns
The row vector divided by the scalar. The current row vector (*this) is unchanged.
v[0] = 8;
v[1] = 4;
v[2] = 2;
vpRowVector w = v / 2;
// v is equal to : [8 4 2]
// w is equal to : [4 2 1]

Definition at line 339 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, and vpArray2D< Type >::data.

◆ operator/=()

vpRowVector & vpRowVector::operator/= ( double  x)
inherited

Operator that allows to divide each element of a row vector by a scalar.

Parameters
x: The scalar.
Returns
The row vector divided by the scalar.
v[0] = 8;
v[1] = 4;
v[2] = 2;
// v is equal to : [8 4 2]
v /= 2;
// v is equal to : [4 2 1]

Definition at line 370 of file vpRowVector.cpp.

References vpArray2D< double >::colNum.

◆ operator<<() [1/2]

vpRowVector & vpRowVector::operator<< ( const vpRowVector v)
inherited

Copy operator. Allows operation such as A << v

#include <visp3/core/vpRowVector.h>
int main()
{
vpRowVector A, B(5);
for (unsigned int i=0; i<B.size(); i++)
B[i] = i;
A << B;
std::cout << "A: " << A << std::endl;
}

In row vector A we get:

A: 0 1 2 3 4

Definition at line 497 of file vpRowVector.cpp.

◆ operator<<() [2/2]

vpRowVector & vpRowVector::operator<< ( double  val)
inherited

Definition at line 503 of file vpRowVector.cpp.

References vpArray2D< double >::data, and vpRowVector::resize().

◆ operator=() [1/4]

vpSubRowVector & vpSubRowVector::operator= ( const double &  x)

Set all the elements of the sub-row vector to x.

Parameters
x: a scalar value.

Definition at line 178 of file vpSubRowVector.cpp.

References vpArray2D< double >::data, and vpArray2D< double >::rowNum.

◆ operator=() [2/4]

vpSubRowVector & vpSubRowVector::operator= ( const vpMatrix B)

Allow to initialize a sub-row vector from a matrix using operation A = B. Notice that the sub-row vector is not resized to the dimension of B.

Parameters
B: a matrix of size 1-by-n.

Definition at line 161 of file vpSubRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, vpException::dimensionError, vpArray2D< Type >::getCols(), vpArray2D< Type >::getRows(), and vpArray2D< double >::rowNum.

◆ operator=() [3/4]

vpSubRowVector & vpSubRowVector::operator= ( const vpRowVector B)

Allow to initialize a sub-row vector from a row vector using operation A = B. Notice that the sub-row vector is not resized to the dimension of B.

Parameters
B: a row vector.

Definition at line 141 of file vpSubRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, vpException::dimensionError, vpArray2D< Type >::getCols(), and vpArray2D< double >::rowNum.

◆ operator=() [4/4]

vpSubRowVector & vpSubRowVector::operator= ( const vpSubRowVector B)

Allow to initialize a sub-row vector from an other one using operation A = B. Notice that the sub-row vector is not resized to the dimension of B.

Parameters
B: a sub-row vector.

Definition at line 120 of file vpSubRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, vpException::dimensionError, vpArray2D< Type >::getCols(), m_parent, m_pColNum, and vpArray2D< double >::rowNum.

◆ operator==() [1/2]

bool vpArray2D< double >::operator== ( const vpArray2D< Type > &  A) const
inherited

Equal to comparison operator of a 2D array.

Definition at line 509 of file vpArray2D.h.

◆ operator==() [2/2]

bool vpRowVector::operator== ( const vpRowVector v) const
inherited

◆ operator[]() [1/2]

double& vpRowVector::operator[] ( unsigned int  n)
inlineinherited

Operator that allows to set a value of an element $v_i$: v[i] = x.

Definition at line 207 of file vpRowVector.h.

◆ operator[]() [2/2]

const double& vpRowVector::operator[] ( unsigned int  n) const
inlineinherited

Operator that allows to get the value of an element $v_i$: x = v[i].

Definition at line 209 of file vpRowVector.h.

◆ print()

int vpRowVector::print ( std::ostream &  s,
unsigned int  length,
char const *  intro = 0 
) const
inherited

Pretty print a row vector. The data are tabulated. The common widths before and after the decimal point are set with respect to the parameter maxlen.

Parameters
sStream used for the printing.
lengthThe suggested width of each row vector element. The actual width grows in order to accommodate the whole integral part, and shrinks if the whole extent is not needed for all the numbers.
introThe introduction which is printed before the vector. Can be set to zero (or omitted), in which case the introduction is not printed.
Returns
Returns the common total width for all vector elements.
See also
std::ostream &operator<<(std::ostream &s, const vpArray2D<Type> &A)
Examples
testRowVector.cpp.

Definition at line 998 of file vpRowVector.cpp.

References vpArray2D< double >::getCols(), and vpMath::maximum().

◆ rad2deg()

void vpRowVector::rad2deg ( )
inlineinherited

Convert a column vector containing angles in radians into degrees.

See also
deg2rad()

Definition at line 249 of file vpRowVector.h.

◆ reshape() [1/2]

vpMatrix vpRowVector::reshape ( unsigned int  nrows,
unsigned int  ncols 
)
inherited

Reshape the row vector in a matrix.

Parameters
nrows: number of rows of the matrix.
ncols: number of columns of the matrix.
Returns
The resulting matrix.
Exceptions
vpException::dimensionErrorIf the matrix and the row vector have not the same size.
See also
reshape(vpMatrix &, const unsigned int &, const unsigned int &)

Definition at line 669 of file vpRowVector.cpp.

References vpRowVector::reshape().

◆ reshape() [2/2]

void vpRowVector::reshape ( vpMatrix M,
const unsigned int &  nrows,
const unsigned int &  ncols 
)
inherited

Reshape the row vector in a matrix.

Parameters
M: the reshaped matrix.
nrows: number of rows of the matrix.
ncols: number of columns of the matrix.
Exceptions
vpException::dimensionErrorIf the matrix and the row vector have not the same size.

The following example shows how to use this method.

#include <visp3/core/vpRowVector.h>
int main()
{
int var=0;
vpMatrix mat(3, 4);
for (int i = 0; i < 3; i++)
for (int j = 0; j < 4; j++)
mat[i][j] = ++var;
std::cout << "mat: \n" << mat << std::endl;
vpRowVector row = mat.stackRows();
std::cout << "row vector: " << row << std::endl;
vpMatrix remat = row.reshape(3, 4);
std::cout << "remat: \n" << remat << std::endl;
}
Implementation of a matrix and operations on matrices.
Definition: vpMatrix.h:151
void reshape(vpMatrix &M, const unsigned int &nrows, const unsigned int &ncols)

If you run the previous example, you get:

mat:
1 2 3 4
5 6 7 8
9 10 11 12
row vector: 1 2 3 4 5 6 7 8 9 10 11 12
remat:
1 2 3 4
5 6 7 8
9 10 11 12
Examples
testMatrixInitialization.cpp.

Definition at line 719 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, vpException::dimensionError, vpArray2D< double >::dsize, vpArray2D< Type >::getCols(), vpArray2D< Type >::getRows(), and vpArray2D< Type >::resize().

Referenced by vpRowVector::reshape().

◆ resize() [1/3]

void vpRowVector::resize ( unsigned int  i,
bool  flagNullify = true 
)
inlineinherited

Modify the size of the row vector.

Parameters
i: Size of the vector. This value corresponds to the vector number of columns.
flagNullify: If true, set the data to zero.
Examples
testMatrix.cpp, testMatrixInitialization.cpp, and testRowVector.cpp.

Definition at line 264 of file vpRowVector.h.

References vpArray2D< Type >::resize().

Referenced by vpImageTools::columnMean(), vpRowVector::init(), vpRowVector::operator,(), vpRowVector::operator<<(), vpRowVector::operator=(), vpRowVector::stack(), vpMatrix::stackRows(), vpTemplateTrackerSSD::vpTemplateTrackerSSD(), and vpTemplateTrackerZNCC::vpTemplateTrackerZNCC().

◆ resize() [2/3]

void vpRowVector::resize ( unsigned int  nrows,
unsigned int  ncols,
bool  flagNullify 
)
inlineinherited

Resize the row vector to a ncols-dimension vector. This function can only be used with nrows = 1.

Parameters
nrows: Vector number of rows. This value should be set to 1.
ncols: Vector number of columns. This value corresponds to the size of the vector.
flagNullify: If true, set the data to zero.
Exceptions
vpException::fatalErrorWhen nrows is not equal to 1.

Definition at line 276 of file vpRowVector.h.

References vpException::fatalError, and vpArray2D< Type >::resize().

◆ resize() [3/3]

void vpArray2D< double >::resize ( unsigned int  nrows,
unsigned int  ncols,
bool  flagNullify = true,
bool  recopy_ = true 
)
inlineinherited

Set the size of the array and initialize all the values to zero.

Parameters
nrows: number of rows.
ncols: number of column.
flagNullify: if true, then the array is re-initialized to 0 after resize. If false, the initial values from the common part of the array (common part between old and new version of the array) are kept. Default value is true.
recopy_: if true, will perform an explicit recopy of the old data.
Examples
testArray2D.cpp, testMatrix.cpp, testMatrixDeterminant.cpp, testMatrixInverse.cpp, testMatrixPseudoInverse.cpp, and testSvd.cpp.

Definition at line 355 of file vpArray2D.h.

◆ save()

static bool vpArray2D< double >::save ( const std::string &  filename,
const vpArray2D< Type > &  A,
bool  binary = false,
const char *  header = "" 
)
inlinestaticinherited

Save a matrix to a file.

Parameters
filename: Absolute file name.
A: Array to be saved.
binary: If true the matrix is saved in a binary file, else a text file.
header: Optional line that will be saved at the beginning of the file.
Returns
Returns true if success.

Warning : If you save the matrix as in a text file the precision is less than if you save it in a binary file.

See also
load()

Definition at line 861 of file vpArray2D.h.

◆ saveYAML()

static bool vpArray2D< double >::saveYAML ( const std::string &  filename,
const vpArray2D< Type > &  A,
const char *  header = "" 
)
inlinestaticinherited

Save an array in a YAML-formatted file.

Parameters
filename: absolute file name.
A: array to be saved in the file.
header: optional lines that will be saved at the beginning of the file. Should be YAML-formatted and will adapt to the indentation if any.
Returns
Returns true if success.

Here is an example of outputs.

vpArray2D::saveYAML("matrix.yml", M, "example: a YAML-formatted header");
vpArray2D::saveYAML("matrixIndent.yml", M, "example:\n - a YAML-formatted \
header\n - with inner indentation");
static bool saveYAML(const std::string &filename, const vpArray2D< Type > &A, const char *header="")
Definition: vpArray2D.h:959

Content of matrix.yml:

example: a YAML-formatted header
rows: 3
cols: 4
- [0, 0, 0, 0]
- [0, 0, 0, 0]
- [0, 0, 0, 0]
double * data
Address of the first element of the data array.
Definition: vpArray2D.h:140

Content of matrixIndent.yml:

example:
- a YAML-formatted header
- with inner indentation
rows: 3
cols: 4
- [0, 0, 0, 0]
- [0, 0, 0, 0]
- [0, 0, 0, 0]
See also
loadYAML()

Definition at line 959 of file vpArray2D.h.

◆ setIdentity()

vp_deprecated void vpRowVector::setIdentity ( const double &  val = 1.0)
inherited
Deprecated:
You should rather use eye()

◆ size()

◆ stack() [1/4]

vpRowVector vpRowVector::stack ( const vpRowVector A,
const vpRowVector B 
)
staticinherited

Stack row vectors.

Parameters
A: Initial vector.
B: Vector to stack at the end of A.
Returns
Stacked vector $[A B]$.
vpRowVector r1(3, 1);
// r1 is equal to [1 1 1]
vpRowVector r2(2, 3);
// r2 is equal to [3 3]
v = vpRowVector::stack(r1, r2);
// v is equal to [1 1 1 3 3]
See also
stack(const vpRowVector &)
stack(const vpRowVector &, const vpRowVector &, vpRowVector &)

Definition at line 863 of file vpRowVector.cpp.

References vpRowVector::stack().

◆ stack() [2/4]

void vpRowVector::stack ( const vpRowVector A,
const vpRowVector B,
vpRowVector C 
)
staticinherited

Stack row vectors.

Parameters
A: Initial vector.
B: Vector to stack at the end of A.
C: Resulting stacked vector $C = [A B]$.
vpRowVector r1(3, 1);
// r1 is equal to [1 1 1]
vpRowVector r2(2, 3);
// r2 is equal to [3 3]
vpRowVector::stack(r1, r2, v);
// v is equal to [1 1 1 3 3]
See also
stack(const vpRowVector &)
stack(const vpRowVector &, const vpRowVector &)

Definition at line 890 of file vpRowVector.cpp.

References vpArray2D< Type >::getCols(), and vpRowVector::resize().

◆ stack() [3/4]

void vpRowVector::stack ( const vpRowVector v)
inherited

Stack row vectors.

Parameters
v: Vector to stack to the existing one.
vpRowVector v1(3, 1);
// v1 is equal to [1 1 1]
vpRowVector v2(2, 3);
// v2 is equal to [3 3]
v1.stack(v2);
// v1 is equal to [1 1 1 3 3]
See also
stack(const vpRowVector &, const double &)
stack(const vpRowVector &, const vpRowVector &)
stack(const vpRowVector &, const vpRowVector &, vpRowVector &)

Definition at line 841 of file vpRowVector.cpp.

References vpRowVector::stack().

◆ stack() [4/4]

void vpRowVector::stack ( double  d)
inherited

Stack row vector with a new element at the end of the vector.

Parameters
d: Element to stack to the existing one.
vpRowVector v(3, 1);
// v is equal to [1 1 1]
v.stack(-2);
// v is equal to [1 1 1 -2]
See also
stack(const vpRowVector &, const vpRowVector &)
stack(const vpRowVector &, const vpRowVector &, vpRowVector &)
Examples
testRowVector.cpp.

Definition at line 816 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, and vpRowVector::resize().

Referenced by vpRowVector::stack().

◆ stackMatrices() [1/3]

static vp_deprecated vpRowVector vpRowVector::stackMatrices ( const vpRowVector A,
const vpRowVector B 
)
inlinestaticinherited
Deprecated:
You should rather use stack(const vpRowVector &A, const vpRowVector &B)

Definition at line 321 of file vpRowVector.h.

◆ stackMatrices() [2/3]

static vp_deprecated void vpRowVector::stackMatrices ( const vpRowVector A,
const vpRowVector B,
vpRowVector C 
)
inlinestaticinherited
Deprecated:
You should rather use stack(const vpRowVector &A, const vpRowVector &B, vpRowVector &C)

Definition at line 326 of file vpRowVector.h.

◆ stackMatrices() [3/3]

vp_deprecated void vpRowVector::stackMatrices ( const vpRowVector r)
inlineinherited
Deprecated:
You should rather use stack(const vpRowVector &)

Definition at line 316 of file vpRowVector.h.

◆ stdev()

double vpRowVector::stdev ( const vpRowVector v,
bool  useBesselCorrection = false 
)
staticinherited

Compute the standard deviation value of all the elements of the vector.

Examples
testRowVector.cpp.

Definition at line 958 of file vpRowVector.cpp.

References vpArray2D< Type >::data, vpException::dimensionError, vpRowVector::mean(), and vpArray2D< Type >::size().

◆ sum()

double vpRowVector::sum ( ) const
inherited

Return the sum of all the elements $v_{i}$ of the row vector v(n).

Returns
The sum square value: $\sum_{j=0}^{n} v_j$.

Definition at line 1090 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, and vpArray2D< double >::rowPtrs.

◆ sumSquare()

double vpRowVector::sumSquare ( ) const
inherited

Return the sum square of all the elements $v_{i}$ of the row vector v(n).

Returns
The sum square value: $\sum_{j=0}^{n} v_j^{2}$.
Examples
testLuminanceMapping.cpp.

Definition at line 1107 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, and vpArray2D< double >::rowPtrs.

Referenced by vpRowVector::frobeniusNorm(), and vpRowVector::normalize().

◆ t()

vpColVector vpRowVector::t ( ) const
inherited

Transpose the row vector. The resulting vector becomes a column vector.

Examples
servoSimu3D_cMcd_CamVelocityWithoutVpServo.cpp, and testLuminanceMapping.cpp.

Definition at line 520 of file vpRowVector.cpp.

References vpArray2D< double >::colNum, vpArray2D< double >::data, and vpArray2D< Type >::data.

Referenced by vpRowVector::transpose().

◆ toStdVector()

std::vector< double > vpRowVector::toStdVector ( ) const
inherited

Converts the vpRowVector to a std::vector.

Returns
The corresponding std::vector<double>.
Examples
testRowVector.cpp.

Definition at line 789 of file vpRowVector.cpp.

References vpArray2D< double >::data, and vpArray2D< double >::size().

◆ transpose() [1/2]

vpColVector vpRowVector::transpose ( ) const
inherited

Transpose the row vector. The resulting vector becomes a column vector.

See also
t()

Definition at line 531 of file vpRowVector.cpp.

References vpRowVector::t().

Referenced by vpUKSigmaDrawerMerwe::drawSigmaPoints().

◆ transpose() [2/2]

void vpRowVector::transpose ( vpColVector v) const
inherited

Transpose the row vector. The resulting vector v becomes a column vector.

See also
t()

Definition at line 536 of file vpRowVector.cpp.

References vpRowVector::t().

Friends And Related Function Documentation

◆ insert()

void vpArray2D< double >::insert ( const vpArray2D< Type > &  A,
const vpArray2D< Type > &  B,
vpArray2D< Type > &  C,
unsigned int  r,
unsigned int  c 
)
related

Insert array B in array A at the given position.

Parameters
A: Main array.
B: Array to insert.
C: Result array.
r: Index of the row where to insert array B.
c: Index of the column where to insert array B.
Warning
Throw exception if the sizes of the arrays do not allow the insertion.

Definition at line 1083 of file vpArray2D.h.

◆ operator==() [1/2]

bool operator== ( const vpArray2D< double > &  A) const
related

Definition at line 1289 of file vpArray2D.h.

◆ operator==() [2/2]

bool operator== ( const vpArray2D< float > &  A) const
related

Definition at line 1308 of file vpArray2D.h.

◆ vpGEMM()

void vpGEMM ( const vpArray2D< double > &  A,
const vpArray2D< double > &  B,
const double &  alpha,
const vpArray2D< double > &  C,
const double &  beta,
vpArray2D< double > &  D,
const unsigned int &  ops = 0 
)
related

This function performs generalized matrix multiplication: D = alpha*op(A)*op(B) + beta*op(C), where op(X) is X or X^T. Operation on A, B and C matrices is described by enumeration vpGEMMmethod().

For example, to compute D = alpha*A^T*B^T+beta*C we need to call :

vpGEMM(A, B, alpha, C, beta, D, VP_GEMM_A_T + VP_GEMM_B_T);
void vpGEMM(const vpArray2D< double > &A, const vpArray2D< double > &B, const double &alpha, const vpArray2D< double > &C, const double &beta, vpArray2D< double > &D, const unsigned int &ops=0)
Definition: vpGEMM.h:414

If C is not used, vpGEMM must be called using an empty array null. Thus to compute D = alpha*A^T*B, we have to call:

vpGEMM(A, B, alpha, null, 0, D, VP_GEMM_B_T);
Exceptions
vpException::incorrectMatrixSizeErrorif the sizes of the matrices do not allow the operations.
Parameters
A: An array that could be a vpMatrix.
B: An array that could be a vpMatrix.
alpha: A scalar.
C: An array that could be a vpMatrix.
beta: A scalar.
D: The resulting array that could be a vpMatrix.
ops: A scalar describing operation applied on the matrices. Possible values are the one defined in vpGEMMmethod(): VP_GEMM_A_T, VP_GEMM_B_T, VP_GEMM_C_T.

Definition at line 414 of file vpGEMM.h.

◆ vpGEMMmethod

enum vpGEMMmethod
related

Enumeration of the operations applied on matrices in vpGEMM() function.

Operations are :

  • VP_GEMM_A_T to use the transpose matrix of A instead of the matrix A
  • VP_GEMM_B_T to use the transpose matrix of B instead of the matrix B
  • VP_GEMM_C_T to use the transpose matrix of C instead of the matrix C

Definition at line 53 of file vpGEMM.h.

Member Data Documentation

◆ colNum

unsigned int vpArray2D< double >::colNum
protectedinherited

Number of columns in the array.

Definition at line 132 of file vpArray2D.h.

◆ data

double * vpArray2D< double >::data
inherited

◆ dsize

unsigned int vpArray2D< double >::dsize
protectedinherited

Current array size (rowNum * colNum)

Definition at line 136 of file vpArray2D.h.

◆ m_parent

vpRowVector* vpSubRowVector::m_parent
protected

Parent vpColVector.

Definition at line 78 of file vpSubRowVector.h.

Referenced by checkParentStatus(), init(), and operator=().

◆ m_pColNum

unsigned int vpSubRowVector::m_pColNum
protected

Number of row of parent vpColVector at initialization.

Definition at line 76 of file vpSubRowVector.h.

Referenced by checkParentStatus(), init(), and operator=().

◆ rowNum

unsigned int vpArray2D< double >::rowNum
protectedinherited

Number of rows in the array.

Definition at line 130 of file vpArray2D.h.

◆ rowPtrs

double ** vpArray2D< double >::rowPtrs
protectedinherited

Address of the first element of each rows.

Definition at line 134 of file vpArray2D.h.