Matrix Class Reference

#include <matrix.h>

List of all members.

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Detailed Description

Data structure for a matrix of doubles.

Public Member Functions
	Matrix ()
	Creates an empty (0x0) matrix.
	Matrix (int rows, int cols)
	Creates a (rows x cols) matrix full of 0s.
int	num_rows () const
	Gets the number of rows.
int	num_cols () const
	Gets the number of columns.
void	Resize (int new_rows, int new_cols)
	Resizes the matrix.
double &	at (int row, int col)
	Get a ref to the kernel value at row, col.
double	at (int row, int col) const
	Get the kernel value at row, col.
void	WriteToStream (ostream &output_stream) const
	Write the matrix to a stream.
void	WriteToFile (const char *filename) const
	Write the matrix to a file.
void	ReadFromStream (istream &input_stream)
	Replaces all data in this matrix with new data from the stream.
void	ReadFromFile (const char *filename)
	Replaces all data in this matrix with new data from the file.

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Constructor & Destructor Documentation

Matrix

(

)

[inline]

Creates an empty (0x0) matrix.

Matrix	(	int	rows,
		int	cols
	)

Creates a (rows x cols) matrix full of 0s.

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Member Function Documentation

int num_rows

(

)

const

Gets the number of rows.

int num_cols

(

)

const

Gets the number of columns.

void Resize	(	int	new_rows,
		int	new_cols
	)

Resizes the matrix.

Warning: this can cause data loss if you are shrinking the matrix. If rows or columns are added, any new elements are 0.

double & at	(	int	row,
		int	col
	)

Get a ref to the kernel value at row, col.

double at	(	int	row,
		int	col
	)			const

Get the kernel value at row, col.

void WriteToStream

(

ostream &

output_stream

)

const

Write the matrix to a stream.

File format:

• (int32) R, the number of rows
• (int32) C, the number of cols
• (double * C) k[0][0], k[0][1], ...
• ...
• (double * C) k[R-1][0], k[R-1][1], ...

Aborts if the stream is bad.

void WriteToFile

(

const char *

filename

)

const

Write the matrix to a file.

See also:

WriteToStream

void ReadFromStream

(

istream &

input_stream

)

Replaces all data in this matrix with new data from the stream.

Aborts if the stream is bad. See WriteToStream() for the file format.

See also:

WriteToStream()

void ReadFromFile

(

const char *

filename

)

Replaces all data in this matrix with new data from the file.

See also:

ReadFromStream

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

• kernel/matrix.h
• kernel/matrix.cc

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