MNIST Class Reference

This class encapsulates and loads data in the standard MNIST format. The data resides in two files, an image file and a label file. More...

#include <mnist.hpp>

Public Member Functions
	MNIST (const char *labelFile, const char *imgFile, int start=0, int len=0)
	constructor which loads the data from the given file, and can load only part of the data in a file. More...
	~MNIST ()
	Destructor. More...
int	getCount () const
	returns the number of examples More...
int	r () const
	returns the number of rows in each image More...
int	c () const
	returns the number of columns in each image More...
uint8_t	getLabel (int n) const
	get the label for a given example More...
uint8_t	getMaxLabel () const
	get the maximum label value (0 to 9 in the original data but different in other tests) More...
uint8_t *	getImg (int n) const
	get the bitmap for a given example More...
uint8_t	getPix (int n, int x, int y) const
	get a pixel for a given example More...
void	dump (int i) const
	dump the image data to standard out More...

Detailed Description

This class encapsulates and loads data in the standard MNIST format. The data resides in two files, an image file and a label file.

Definition at line 24 of file mnist.hpp.

Constructor & Destructor Documentation

MNIST::MNIST ( const char *  labelFile, const char *  imgFile, int  start = 0, int  len = 0  )

inline

constructor which loads the data from the given file, and can load only part of the data in a file.

Parameters

labelFile	the name of the file containing the labels
imgFile	the name of the file containing the image data
start	the image number to start loading from
len	how many images to load (0 means all)

Definition at line 35 of file mnist.hpp.

MNIST::~MNIST ( )

inline

Destructor.

Definition at line 127 of file mnist.hpp.

Member Function Documentation

int MNIST::c ( ) const

inline

returns the number of columns in each image

Definition at line 150 of file mnist.hpp.

void MNIST::dump ( int  i ) const

inline

dump the image data to standard out

Definition at line 192 of file mnist.hpp.

int MNIST::getCount ( ) const

inline

returns the number of examples

Definition at line 135 of file mnist.hpp.

uint8_t* MNIST::getImg ( int  n ) const

inline

get the bitmap for a given example

Returns

a pointer to the first pixel in the image

Definition at line 175 of file mnist.hpp.

uint8_t MNIST::getLabel ( int  n ) const

inline

get the label for a given example

Definition at line 158 of file mnist.hpp.

uint8_t MNIST::getMaxLabel ( ) const

inline

get the maximum label value (0 to 9 in the original data but different in other tests)

Definition at line 166 of file mnist.hpp.

uint8_t MNIST::getPix ( int  n, int  x, int  y  ) const

inline

get a pixel for a given example

Returns

the pixel as a byte

Definition at line 184 of file mnist.hpp.

int MNIST::r ( ) const

inline

returns the number of rows in each image

Definition at line 142 of file mnist.hpp.

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

• /home/travis/build/jimfinnis/uesmanncpp/mnist.hpp