Uses of Interface
tech.tablesaw.columns.Column

Packages that use Column

Package	Description
tech.tablesaw.api
tech.tablesaw.api.ml.clustering
tech.tablesaw.columns
tech.tablesaw.filtering.text
tech.tablesaw.io
tech.tablesaw.io.csv
tech.tablesaw.mapping
tech.tablesaw.reducing
tech.tablesaw.store
tech.tablesaw.table

Uses of Column in tech.tablesaw.api

Subinterfaces of Column in tech.tablesaw.api

Modifier and Type	Interface and Description
interface	NumericColumn Functionality common to all numeric column types

Classes in tech.tablesaw.api that implement Column

Modifier and Type	Class and Description
class	BooleanColumn A column in a base table that contains float values
class	CategoryColumn A column that contains String values.
class	DateColumn A column in a base table that contains float values
class	DateTimeColumn A column in a table that contains long-integer encoded (packed) local date-time values
class	DoubleColumn A column in a base table that contains double precision floating point values
class	FloatColumn A column in a base table that contains float values
class	IntColumn A column that contains signed 4 byte integer values
class	LongColumn A column that contains signed 8 byte integer values
class	ShortColumn A column that contains signed 2 byte integer values
class	TimeColumn A column in a base table that contains float values

Methods in tech.tablesaw.api that return Column

Modifier and Type	Method and Description
Column	Table.column(int columnIndex) Returns the column at the given index in the column list
Column	Table.getAndRemoveColumn(int columnIndex) Removes the given column from this table and returns it
Column	Table.getAndRemoveColumn(String columnName) Removes the given column from this table and returns it

Methods in tech.tablesaw.api that return types with arguments of type Column

Modifier and Type	Method and Description
List<Column>	Table.columns() Returns the list of columns
List<Column>	Table.columns(String... columnNames) Returns only the columns whose names are given in the input array

Methods in tech.tablesaw.api with parameters of type Column

Modifier and Type	Method and Description
void	Table.addColumn(Column... cols) Adds the given column to this table
void	Table.addColumn(int index, Column column) Adds the given column to this table at the given position in the column list
void	BooleanColumn.append(Column column)
void	DateColumn.append(Column column)
void	DateTimeColumn.append(Column column)
void	IntColumn.append(Column column)
void	DoubleColumn.append(Column column)
void	ShortColumn.append(Column column)
void	LongColumn.append(Column column)
void	CategoryColumn.append(Column column)
void	FloatColumn.append(Column column)
void	TimeColumn.append(Column column)
int	Table.columnIndex(Column column) Returns the index of the given column (its position in the list of columns)
static Table	Table.create(String tableName, Column... columns) Returns a new table with the given columns and given name
int	Table.getFirst(Column column, String value) Returns the first row for which the column columnName contains value, or null if there are no matches TODO(lwhite) This is a toy implementation badly in need of rewrite for performance.
void	Table.removeColumns(Column... columns) Removes the given columns
void	Table.retainColumns(Column... columns) Removes the given columns from this table
ViewGroup	Table.splitOn(Column... columns)

Constructors in tech.tablesaw.api with parameters of type Column

Constructor and Description
Table(String name, Column... columns) Returns a new Table initialized with the given names and columns

Uses of Column in tech.tablesaw.api.ml.clustering

Methods in tech.tablesaw.api.ml.clustering with parameters of type Column

Modifier and Type	Method and Description
Table	Kmeans.clustered(Column labels)

Uses of Column in tech.tablesaw.columns

Subinterfaces of Column in tech.tablesaw.columns

Modifier and Type	Interface and Description
interface	BooleanColumnUtils
interface	CategoryColumnUtils
interface	DateColumnUtils
interface	DateTimeColumnUtils
interface	DoubleColumnUtils
interface	FloatColumnUtils
interface	IntColumnUtils
interface	LongColumnUtils Pre-made predicates for common integer use cases, and other helpful things
interface	ShortColumnUtils
interface	TimeColumnUtils

Classes in tech.tablesaw.columns that implement Column

Modifier and Type	Class and Description
class	AbstractColumn Partial implementation of the Column interface

Methods in tech.tablesaw.columns that return Column

Modifier and Type	Method and Description
Column	Column.copy() Returns a deep copy of the receiver
Column	AbstractColumn.difference()
Column	Column.difference() Returns a new column of the same type as the receiver, such that the values in the new column contain the difference between each cell in the original and it's predecessor.
Column	Column.emptyCopy() Returns a copy of the receiver with no data.
Column	Column.emptyCopy(int rowSize) Returns an empty copy of the receiver, with its internal storage initialized to the given row size
default Column	Column.first(int numRows)
default Column	Column.last(int numRows)
default Column	Column.subset(Selection rows)
Column	Column.unique() Returns a column of the same type as the receiver, containing only the unique values of the receiver

Methods in tech.tablesaw.columns with parameters of type Column

Modifier and Type	Method and Description
void	Column.append(Column column)

Uses of Column in tech.tablesaw.filtering.text

Subinterfaces of Column in tech.tablesaw.filtering.text

Modifier and Type	Interface and Description
interface	CategoryFilters

Uses of Column in tech.tablesaw.io

Methods in tech.tablesaw.io that return Column

Modifier and Type	Method and Description
static Column	TypeUtils.newColumn(String name, ColumnType type) Constructs and returns a column for the given name and type

Uses of Column in tech.tablesaw.io.csv

Methods in tech.tablesaw.io.csv with parameters of type Column

Modifier and Type	Method and Description
static void	CsvWriter.write(String fileName, Column column) Writes the given column to a file with the given fileName as a single column CSV file

Uses of Column in tech.tablesaw.mapping

Subinterfaces of Column in tech.tablesaw.mapping

Modifier and Type	Interface and Description
interface	BooleanMapUtils An interface for mapping operations unique to Boolean columns
interface	DateMapUtils An interface for mapping operations unique to Date columns
interface	DateTimeMapUtils
interface	IntMapUtils
interface	LongMapUtils
interface	ShortMapUtils
interface	StringMapUtils
interface	TimeMapUtils

Methods in tech.tablesaw.mapping that return Column

Modifier and Type	Method and Description
default Column	StringMapUtils.distance(Column column2) Returns a column containing the levenshtein distance between the two given string columns

Methods in tech.tablesaw.mapping with parameters of type Column

Modifier and Type	Method and Description
default CategoryColumn	StringMapUtils.commonPrefix(Column column2)
default CategoryColumn	StringMapUtils.commonSuffix(Column column2)
static String	DateMapUtils.dateColumnName(Column column1, int value, TemporalUnit unit)
default Column	StringMapUtils.distance(Column column2) Returns a column containing the levenshtein distance between the two given string columns
default CategoryColumn	StringMapUtils.join(Column column2, String delimiter)

Uses of Column in tech.tablesaw.reducing

Subinterfaces of Column in tech.tablesaw.reducing

Modifier and Type	Interface and Description
interface	CategoryReduceUtils

Methods in tech.tablesaw.reducing with parameters of type Column

Modifier and Type	Method and Description
static Table	CrossTab.xCount(Table table, Column column1, Column column2)
static Table	CrossTab.xTabCount(Table table, Column column1, Column column2) Returns a table containing two-dimensional cross-tabulated counts for each combination of values in column1 and column2
static Table	CrossTab.xTabCount(Table table, DateColumn column1, Column column2)

Uses of Column in tech.tablesaw.store

Constructors in tech.tablesaw.store with parameters of type Column

Constructor and Description
ColumnMetadata(Column column)

Uses of Column in tech.tablesaw.table

Methods in tech.tablesaw.table that return Column

Modifier and Type	Method and Description
abstract Column	Relation.column(int columnIndex) Returns the column at columnIndex (0-based)
Column	TemporaryView.column(int columnIndex)
Column	Relation.column(String columnName) Returns the column with the given columnName, ignoring case

Methods in tech.tablesaw.table that return types with arguments of type Column

Modifier and Type	Method and Description
abstract List<Column>	Relation.columns() Returns a list of all the columns in the relation
List<Column>	TemporaryView.columns()

Methods in tech.tablesaw.table with parameters of type Column

Modifier and Type	Method and Description
abstract void	Relation.addColumn(Column... cols)
void	TemporaryView.addColumn(Column... column)
abstract int	Relation.columnIndex(Column col) Returns the index of the given column
int	TemporaryView.columnIndex(Column column)
abstract void	Relation.removeColumns(Column... columns) Removes the given columns from the receiver
void	TemporaryView.removeColumns(Column... columns)

Constructors in tech.tablesaw.table with parameters of type Column

Constructor and Description
TableGroup(Table original, Column... columns)
ViewGroup(Table original, Column... columns)