ppforest2::io::csv Namespace Reference

Functions
stats::DataPacket	read (std::string const &filename)
	Read a CSV file into a DataPacket.
stats::DataPacket	read_sorted (std::string const &filename)
	Read a CSV file and sort rows so that response groups are contiguous.
void	write (stats::DataPacket const &data, std::string const &filename)
	Write a DataPacket to a CSV file (features followed by label, no header).

Function Documentation

read()

stats::DataPacket ppforest2::io::csv::read

(

std::string const &

filename

)

Read a CSV file into a DataPacket.

Assumes the last column is the response variable (group label as string) and all preceding columns are features. Categorical feature columns are automatically detected and integer-encoded. String labels are mapped to contiguous integer codes starting at 0.

Parameters

filename

Path to the CSV file.

Returns

A DataPacket containing the feature matrix and response vector.

Exceptions

std::runtime_error

If the file is empty or has inconsistent columns.

read_sorted()

stats::DataPacket ppforest2::io::csv::read_sorted

(

std::string const &

filename

)

Read a CSV file and sort rows so that response groups are contiguous.

Calls read() and then sorts the data if the response vector is not already contiguous, as required by the training routines.

Parameters

filename

Path to the CSV file.

Returns

A DataPacket with contiguous group ordering.

write()

void ppforest2::io::csv::write	(	stats::DataPacket const &	data,
		std::string const &	filename )

Write a DataPacket to a CSV file (features followed by label, no header).

Parameters

data	The DataPacket to write.
filename	Output file path.