Attributes Class Reference

#include <attributes.h>

Public Member Functions
	Attributes ()
void	add (Attribute *attribute) throw ( logic_error )
int	getClassIndex () const throw ( logic_error )
bool	getHasNominalAttributes () const
bool	getHasNumericAttributes () const
Attribute *	get (int i) const throw ( logic_error )
Attribute *	getClassAttribute () const throw ( logic_error )
int	getIndex (string name) const throw ( logic_error )
int	getSize () const
void	parse (istream &in) throw ( logic_error )
void	setClassIndex (int classIndex) throw ( logic_error )

Private Attributes
vector< Attribute * >	attributes
bool	hasNumericAttributes
bool	hasNominalAttributes
int	classIndex

Friends
ostream &	operator<< (ostream &out, const Attributes &a)

Constructor & Destructor Documentation

Attributes::Attributes

(

)

Default constructor.

Member Function Documentation

void Attributes::add	(	Attribute *	attribute	)
throw	(	logic_error
	)

Adds a new attribute to this set of attributes.

Parameters

attribute

the attribute's name

Exceptions

logic_error

if the attribute can not be added because of type or memory problems

Attribute * Attributes::get	(	int	i	)	const
throw	(	logic_error
	)

Returns the ith attribute in this set of attributes.

Parameters

i	the index of the specified attribute

Returns

the ith Attribute

Exceptions

logic_error

if the index is out of range

Attribute * Attributes::getClassAttribute	(		)	const
throw	(	logic_error
	)

Returns the class attribute.

Returns

the class attribute

Exceptions

logic_error

if the class index is out of range

int Attributes::getClassIndex	(		)	const
throw	(	logic_error
	)

Returns the index of the class label.

Returns

the index of the class label

Exceptions

logic_error

if the class index is out of range

bool Attributes::getHasNominalAttributes

(

)

const

Returns true if this set of attributes has one or more nominal attributes; returns false otherwise.

Returns

true if this set of attributes has nominal attributes

bool Attributes::getHasNumericAttributes

(

)

const

Returns true if this set of attributes has one or more numeric attributes; returns false otherwise.

Returns

true if this set of attributes has numeric attributes

int Attributes::getIndex	(	string	name	)	const
throw	(	logic_error
	)

Returns the attribute's index.

Parameters

name	the attribute's name

Returns

the attribute's position in the names array

Exceptions

logic_error

if the name is invalid

int Attributes::getSize

(

)

const

Returns the number of attributes.

Returns

the number of attributes

void Attributes::parse	(	istream &	in	)
throw	(	logic_error
	)

Parses the attribute declarations in the specified input stream. By convention, the last attribute is the class label after parsing.

Parameters

in	an input stream containing the data set's tokens

Exceptions

logic_error

if there is a parse error

void Attributes::setClassIndex	(	int	classIndex	)
throw	(	logic_error
	)

Sets the class index for this set of attributes.

Parameters

classIndex

the new class index

Exceptions

logic_error

if the index is out of range

Friends And Related Function Documentation

ostream& operator<< ( ostream &  out, const Attributes &  a  )

friend

Writes the specified attributes to the output stream and returns it.

Parameters

out	the output stream for writing
a	the specified attribute for writing

Returns

the modified output stream

Member Data Documentation

vector<Attribute *> Attributes::attributes

private

a vector of attributes

int Attributes::classIndex

private

stores the position of the class label

bool Attributes::hasNominalAttributes

private

a flag indicating that the data set has one or more nominal attributes

bool Attributes::hasNumericAttributes

private

a flag indicating that the data set has one or more numeric attributes

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

• attributes.h
• attributes.cc