jm::Vector Struct Reference

An n-dimensional vector. More...

Public Member Functions
	Vector ()
	Constructor creates empty vector (m=0)
	Vector (const Vector &another)
	Copy constructor.
	Vector (size_t rows)
	Constructor creates an n-dimensional vector.
	~Vector ()
	Destructor.
double	abs () const
	This method returns the absolute value of the vector.
void	normalize ()
	This method normalises the vector. The length of the vector is set to 1. The direction remains the same.
void	zeros ()
	This method zeroes all entries of the vector.
void	ones ()
	This method sets all entries of the vector to 1.0.
double	dotProduct (const Vector &another) const
	Returns the scalar product of one vector with another.
Vector &	operator= (const Vector &another)

Public Attributes
size_t	m
	This variable stores the number of rows in the vector.
double *	data
	This field stores the data of the vector. The length must always be m.

Friends
DllExport friend std::ostream &	operator<< (std::ostream &out, const Vector &str)

Detailed Description

An n-dimensional vector.

Constructor & Destructor Documentation

Vector() [1/3]

jm::Vector::Vector

(

)

Constructor creates empty vector (m=0)

Vector() [2/3]

jm::Vector::Vector

(

const Vector &

another

)

Copy constructor.

Vector() [3/3]

jm::Vector::Vector ( size_t  rows )

explicit

Constructor creates an n-dimensional vector.

Parameters

rows	Number of rows (dimensions) in the vector.

~Vector()

jm::Vector::~Vector

(

)

Destructor.

Member Function Documentation

abs()

double jm::Vector::abs

(

)

const

This method returns the absolute value of the vector.

dotProduct()

double jm::Vector::dotProduct

(

const Vector &

another

)

const

Returns the scalar product of one vector with another.

• If the scalar product is 0, then two vectors are perpendicular to each other.
• If the scalar conduct > 0, then the included angle is acute.
• If the scalar conduct < 0, then the included angle is obtuse.
• For normalised vectors, the scalar product corresponds to the projection of one vector onto the other.

Parameters

another

The vector with which the scalar product "this × other" is formed.

normalize()

void jm::Vector::normalize

(

)

This method normalises the vector. The length of the vector is set to 1. The direction remains the same.

ones()

void jm::Vector::ones

(

)

This method sets all entries of the vector to 1.0.

operator=()

Vector & jm::Vector::operator=

(

const Vector &

another

)

zeros()

void jm::Vector::zeros

(

)

This method zeroes all entries of the vector.

Friends And Related Symbol Documentation

operator<<

DllExport friend std::ostream & operator<< ( std::ostream &  out, const Vector &  str  )

friend

Member Data Documentation

data

double* jm::Vector::data

This field stores the data of the vector. The length must always be m.

m

size_t jm::Vector::m

This variable stores the number of rows in the vector.