tech.tablesaw.selection

Interface Selection

All Superinterfaces:

it.unimi.dsi.fastutil.ints.IntIterable, Iterable<Integer>

All Known Implementing Classes:

BitmapBackedSelection

public interface Selection
extends it.unimi.dsi.fastutil.ints.IntIterable

A selection maintains an ordered set of ints that can be used to eval rows from a table or column

Method Summary

Modifier and Type	Method and Description
Selection	add(int... ints) Adds the given integers to the Selection if it is not already present, and does nothing otherwise
Selection	addRange(int start, int end) Adds to the current bitmap all integers in [rangeStart,rangeEnd)
Selection	and(Selection otherSelection) Returns the intersection of the receiver and otherSelection, after updating the receiver
Selection	andNot(Selection otherSelection) Implements the set difference operation between the receiver and otherSelection, after updating the receiver
Selection	clear()
boolean	contains(int i)
Selection	flip(int rangeStart, int rangeEnd) Returns a selection with the bits from this selection flipped over the given range
int	get(int i) Returns the value of the ith element.
boolean	isEmpty()
Selection	or(Selection otherSelection) Returns the union of the receiver and otherSelection, after updating the receiver
Selection	removeRange(long start, long end)
static Selection	selectNRowsAtRandom(int n, int max) Returns an randomly generated selection of size N where Max is the largest possible value
int	size()
int[]	toArray()
static Selection	with(int... rows)
static Selection	withoutRange(int totalRangeStart, int totalRangeEnd, int excludedRangeStart, int excludedRangeEnd)
static Selection	withRange(int start, int end)

Methods inherited from interface it.unimi.dsi.fastutil.ints.IntIterable

forEach, forEach, iterator

Methods inherited from interface java.lang.Iterable

spliterator

Method Detail

toArray

int[] toArray()

add

Selection add(int... ints)

Adds the given integers to the Selection if it is not already present, and does nothing otherwise

addRange

Selection addRange(int start,
                   int end)

Adds to the current bitmap all integers in [rangeStart,rangeEnd)

Parameters:

start - inclusive beginning of range

end - exclusive ending of range

removeRange

Selection removeRange(long start,
                      long end)

size

int size()

and

Selection and(Selection otherSelection)

Returns the intersection of the receiver and otherSelection, after updating the receiver

or

Selection or(Selection otherSelection)

Returns the union of the receiver and otherSelection, after updating the receiver

andNot

Selection andNot(Selection otherSelection)

Implements the set difference operation between the receiver and otherSelection, after updating the receiver

isEmpty

boolean isEmpty()

clear

Selection clear()

contains

boolean contains(int i)

get

int get(int i)

Returns the value of the ith element. For example, if there are three ints {4, 32, 71} in the selection, get(0) returns 4, get(1) returns 32, and get(2) returns 71

It can be useful if you need to iterate over the data, although there is also an iterator

flip

Selection flip(int rangeStart,
               int rangeEnd)

Returns a selection with the bits from this selection flipped over the given range

selectNRowsAtRandom

static Selection selectNRowsAtRandom(int n,
                                     int max)

Returns an randomly generated selection of size N where Max is the largest possible value

with

static Selection with(int... rows)

withRange

static Selection withRange(int start,
                           int end)

withoutRange

static Selection withoutRange(int totalRangeStart,
                              int totalRangeEnd,
                              int excludedRangeStart,
                              int excludedRangeEnd)