Package tech.tablesaw.aggregate

Class CrossTab

java.lang.Object

tech.tablesaw.aggregate.CrossTab

public final class CrossTab
extends Object

Utilities for creating frequency and proportion cross tabs

Method Summary

Modifier and Type	Method	Description
static Table	columnPercents(Table table, String column1, String column2)	Returns a table containing the column percents made from a source table, after first calculating the counts cross-tabulated from the given columns
static Table	columnPercents(Table table, CategoricalColumn<?> column1, CategoricalColumn<?> column2)	Returns a table containing the column percents made from a source table, after first calculating the counts cross-tabulated from the given columns
static Table	counts(Table table, String columnName)	Returns a Table containing counts of records in the given Table grouped by the given columnName See also Table.countBy(String...)
static Table	counts(Table table, CategoricalColumn<?> column1, CategoricalColumn<?> column2)	Returns a table containing two-dimensional cross-tabulated counts for each combination of values in column1 and column2
static Table	percents(Table table, String column1)	Returns a Table containing the proportion of records in the given Table grouped by the given column TODO: Consider renaming to proportions
static Table	rowPercents(Table table, String column1, String column2)	Returns a table containing the row percents made from a source table, after first calculating the counts cross-tabulated from the given columns
static Table	rowPercents(Table table, CategoricalColumn<?> column1, CategoricalColumn<?> column2)	Returns a table containing the row percents made from a source table, after first calculating the counts cross-tabulated from the given columns
static Table	tablePercents(Table table, String column1, String column2)	Returns a table containing the table percents made from a source table, after first calculating the counts cross-tabulated from the given columns
static Table	tablePercents(Table table, CategoricalColumn<?> column1, CategoricalColumn<?> column2)	Returns a table containing the table percents made from a source table, after first calculating the counts cross-tabulated from the given columns

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

counts

public static Table counts(Table table,
 CategoricalColumn<?> column1,
 CategoricalColumn<?> column2)

Returns a table containing two-dimensional cross-tabulated counts for each combination of values in column1 and column2

Parameters:

table - The table we're deriving the counts from

column1 - A column in table

column2 - Another column in table

Returns:

A table containing the cross-tabs

counts

public static Table counts(Table table,
 String columnName)

Returns a Table containing counts of records in the given Table grouped by the given columnName See also Table.countBy(String...)

percents

public static Table percents(Table table,
 String column1)

Returns a Table containing the proportion of records in the given Table grouped by the given column TODO: Consider renaming to proportions

columnPercents

public static Table columnPercents(Table table,
 CategoricalColumn<?> column1,
 CategoricalColumn<?> column2)

Returns a table containing the column percents made from a source table, after first calculating the counts cross-tabulated from the given columns

columnPercents

public static Table columnPercents(Table table,
 String column1,
 String column2)

Returns a table containing the column percents made from a source table, after first calculating the counts cross-tabulated from the given columns

rowPercents

public static Table rowPercents(Table table,
 CategoricalColumn<?> column1,
 CategoricalColumn<?> column2)

Returns a table containing the row percents made from a source table, after first calculating the counts cross-tabulated from the given columns

rowPercents

public static Table rowPercents(Table table,
 String column1,
 String column2)

Returns a table containing the row percents made from a source table, after first calculating the counts cross-tabulated from the given columns

tablePercents

public static Table tablePercents(Table table,
 CategoricalColumn<?> column1,
 CategoricalColumn<?> column2)

Returns a table containing the table percents made from a source table, after first calculating the counts cross-tabulated from the given columns

tablePercents

public static Table tablePercents(Table table,
 String column1,
 String column2)

Returns a table containing the table percents made from a source table, after first calculating the counts cross-tabulated from the given columns