smile.io

Interface Write

public interface Write

Interface to write data to external storage systems.

Method Summary

Modifier and Type	Method and Description
static void	arff(smile.data.DataFrame df, java.nio.file.Path path, java.lang.String relation) Writes the data frame to an ARFF file.
static void	arrow(smile.data.DataFrame df, java.nio.file.Path path) Writes an Apache Arrow file.
static void	csv(smile.data.DataFrame df, java.nio.file.Path path) Writes a CSV file.
static void	csv(smile.data.DataFrame df, java.nio.file.Path path, org.apache.commons.csv.CSVFormat format) Writes a CSV file.

Method Detail

csv

static void csv(smile.data.DataFrame df,
                java.nio.file.Path path)
         throws java.io.IOException

Writes a CSV file.

Throws:

java.io.IOException

csv

static void csv(smile.data.DataFrame df,
                java.nio.file.Path path,
                org.apache.commons.csv.CSVFormat format)
         throws java.io.IOException

Writes a CSV file.

Throws:

java.io.IOException

arrow

static void arrow(smile.data.DataFrame df,
                  java.nio.file.Path path)
           throws java.io.IOException

Writes an Apache Arrow file. Apache Arrow is a cross-language development platform for in-memory data. It specifies a standardized language-independent columnar memory format for flat and hierarchical data, organized for efficient analytic operations on modern hardware.

Throws:

java.io.IOException

arff

static void arff(smile.data.DataFrame df,
                 java.nio.file.Path path,
                 java.lang.String relation)
          throws java.io.IOException

Writes the data frame to an ARFF file.

Parameters:

df - the data frame.

path - the file path.

relation - the relation name of ARFF.

Throws:

java.io.IOException