class for impoting data from a csv file and allowing label string lookup like a data frame. More...

#include <utilities_slsim.h>

Public Member Functions
	DataFrame (std::string datafile, size_t MaxNumber=1000000, char comment_char='#', char deliniator=',', std::string replace="\\N", std::function< bool(std::vector< T > &)> accept=[](std::vector< T > &v){return true;})

void	input (std::string datafile, size_t MaxNumber=1000000, char comment_char='#', char deliniator=',', std::string replace="\\N", std::function< bool(std::vector< T > &)> accept=[](std::vector< T > &v){return true;})

void	pop (std::string colname)
	remove a column

std::vector< T > &	operator[] (const std::string &label)
	returns column by name

void	add_column (const std::string &name, const std::vector< T > &vec)
	add a column to the data frame. This does a copy.

std::vector< T > &	operator[] (int i)
	returns column by number

std::vector< std::string >	labels () const
	returns labels of the columns from the data file

void	sortby (std::string name)

void	shuffle (Utilities::RandomNumbers_NR &ran)

size_t	number_of_rows ()

size_t	number_of_columns ()

Public Attributes
std::vector< std::vector< T > >	data

Detailed Description

template<typename T>
class Utilities::DataFrame< T >

class for impoting data from a csv file and allowing label string lookup like a data frame.

The accept function can be used to limit the amount of data added. If there is an object, a, used to make this selection this can be done like [&a](str::vector<T> &v}{return a.itsok(v[3],v[4]);} where v corresponds to a row in the data file in order.

Entries that throw an exception when converting to T are replaced with -500

Constructor & Destructor Documentation

◆ DataFrame()

template<typename T >

Utilities::DataFrame< T >::DataFrame	(	std::string	datafile,
		size_t	MaxNumber = 1000000,
		char	comment_char = '#',
		char	deliniator = ',',
		std::string	replace = "\\N",
		std::function< bool(std::vector< T > &)>	accept = [](std::vector<T> &v){return true;} )

inline

Parameters

datafile	input catalog file in csv format
MaxNumber	maximum number of entries read
comment_char	comment charactor for header
deliniator	deliniator between values
replace	replace this string with zeros
accept	function that determines if a row should be accepted

Member Function Documentation

◆ input()