mlpack::data::LoadCSV Class Reference

Load the csv file.This class use boost::spirit to implement the parser, please refer to following link http://theboostcpplibraries.com/boost.spirit for quick review. More...

#include <load_csv.hpp>

Public Member Functions
	LoadCSV (const std::string &file)
	Construct the LoadCSV object on the given file. More...
template<typename T , typename PolicyType >
void	Load (arma::Mat< T > &inout, DatasetMapper< PolicyType > &infoSet, const bool transpose=true)
	Load the file into the given matrix with the given DatasetMapper object. More...
template<typename T , typename MapPolicy >
void	GetMatrixSize (size_t &rows, size_t &cols, DatasetMapper< MapPolicy > &info)
	Peek at the file to determine the number of rows and columns in the matrix, assuming a non-transposed matrix. More...
template<typename T , typename MapPolicy >
void	GetTransposeMatrixSize (size_t &rows, size_t &cols, DatasetMapper< MapPolicy > &info)
	Peek at the file to determine the number of rows and columns in the matrix, assuming a transposed matrix. More...

Detailed Description

Load the csv file.This class use boost::spirit to implement the parser, please refer to following link http://theboostcpplibraries.com/boost.spirit for quick review.

Constructor & Destructor Documentation

LoadCSV()

mlpack::data::LoadCSV::LoadCSV

(

const std::string &

file

)

Construct the LoadCSV object on the given file.

This will construct the rules necessary for loading and attempt to open the file.

Spirit rule for parsing quoted string.

Member Function Documentation

GetMatrixSize()

template<typename T , typename MapPolicy >

void mlpack::data::LoadCSV::GetMatrixSize ( size_t &  rows, size_t &  cols, DatasetMapper< MapPolicy > &  info  )

inline

Peek at the file to determine the number of rows and columns in the matrix, assuming a non-transposed matrix.

This will also take a first pass over the data for DatasetMapper, if MapPolicy::NeedsFirstPass is true. The info object will be re-initialized with the correct dimensionality.

Parameters

rows	Variable to be filled with the number of rows.
cols	Variable to be filled with the number of columns.
info	DatasetMapper object to use for first pass.

GetTransposeMatrixSize()

template<typename T , typename MapPolicy >

void mlpack::data::LoadCSV::GetTransposeMatrixSize ( size_t &  rows, size_t &  cols, DatasetMapper< MapPolicy > &  info  )

inline

Peek at the file to determine the number of rows and columns in the matrix, assuming a transposed matrix.

This will also take a first pass over the data for DatasetMapper, if MapPolicy::NeedsFirstPass is true. The info object will be re-initialized with the correct dimensionality.

Parameters

rows	Variable to be filled with the number of rows.
cols	Variable to be filled with the number of columns.
info	DatasetMapper object to use for first pass.

Load()

template<typename T , typename PolicyType >

void mlpack::data::LoadCSV::Load ( arma::Mat< T > &  inout, DatasetMapper< PolicyType > &  infoSet, const bool  transpose = true  )

inline

Load the file into the given matrix with the given DatasetMapper object.

Throws exceptions on errors.

Parameters

inout	Matrix to load into.
infoSet	DatasetMapper to use while loading.
transpose	If true, the matrix should be transposed on loading (default).

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

• src/mlpack/core/data/load_csv.hpp
• src/mlpack/core/data/load_csv.cpp