data_io.h

//==================================================================================
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#ifndef DPRIVE_ML__DATA_IO_H_
#define DPRIVE_ML__DATA_IO_H_

#include <iostream>
#include <vector>
#include <string>
#include "lr_types.h"

/* reads in the feature names from the header of the file
 */
void ReadHeader(std::istream &is, std::vector<std::string> &featureNames);

/* Reads up to maxLines records from file and parses them into data and labels.
 * If maxLines is negative, it will read as many lines are in the file.
 * note intercept is already in this data.
 */
void ReadData(std::istream &is, Mat &data, int maxLines = -1);

/* Creates an input file stream and uses ReadData to read rowsToRead rows from the file.
 * If rowsToRead is negative, it will read all rows in the file.
 */
void LoadDataFile(std::string filename, Mat &data, std::vector<std::string> &featureNames, int rowsToRead, bool normalize_flag);

#endif //DPRIVE_ML__DATA_IO_H_