IntColumn (tablesaw-core 0.12.0 API)

java.lang.Object
- tech.tablesaw.columns.AbstractColumn
- - tech.tablesaw.api.IntColumn

All Implemented Interfaces:

it.unimi.dsi.fastutil.ints.IntIterable, Iterable<Integer>, IntConvertibleColumn, NumericColumn, Column, IntColumnUtils, IntMapUtils
```
public class IntColumn
extends AbstractColumn
implements IntMapUtils, NumericColumn, IntConvertibleColumn
```
A column that contains signed 4 byte integer values

Field Summary

Fields
Modifier and Type Field and Description

static int DEFAULT_ARRAY_SIZE

static int MISSING_VALUE
- Fields inherited from interface tech.tablesaw.columns.IntColumnUtils
  isEqualTo, isEven, isGreaterThan, isGreaterThanOrEqualTo, isLessThan, isLessThanOrEqualTo, isMissing, isNegative, isNonNegative, isNotEqualTo, isNotMissing, isOdd, isPositive, isZero

Fields
Modifier and Type	Field and Description
`static int`	`DEFAULT_ARRAY_SIZE`
`static int`	`MISSING_VALUE`

Constructor Summary

Constructors
Constructor and Description
`IntColumn(ColumnMetadata metadata)`
`IntColumn(String name)`
`IntColumn(String name, int initialSize)`
`IntColumn(String name, int[] arr)`
`IntColumn(String name, it.unimi.dsi.fastutil.ints.IntArrayList data)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`append(Column column)`
`void`	`append(int i)`
`void`	`appendCell(String object)`
`byte[]`	`asBytes(int rowNumber)` Returns the contents of the cell at rowNumber as a byte[]
`double[]`	`asDoubleArray()`
`it.unimi.dsi.fastutil.floats.FloatArrayList`	`asFloatArray()`
`int[]`	`asIntArray()`
`it.unimi.dsi.fastutil.ints.IntSet`	`asSet()`
`it.unimi.dsi.fastutil.ints.IntArrayList`	`bottom(int n)` Returns the smallest ("bottom") n values in the column
`int`	`byteSize()` Returns the width of a cell in this column, in bytes.
`void`	`clear()`
`boolean`	`contains(int i)`
`IntColumn`	`copy()` Returns a deep copy of the receiver
`long`	`countIf(IntPredicate predicate)`
`int`	`countMissing()` Returns the count of missing values in this column
`int`	`countUnique()` Returns the count of unique values in this column.
`IntColumn`	`cumProd()` Returns a new column with a cumulative product calculated
`IntColumn`	`cumSum()` Returns a new column with a cumulative sum calculated
`it.unimi.dsi.fastutil.ints.IntArrayList`	`data()`
`IntColumn`	`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.
`IntColumn`	`emptyCopy()` Returns a copy of the receiver with no data.
`IntColumn`	`emptyCopy(int rowSize)` Returns an empty copy of the receiver, with its internal storage initialized to the given row size.
`int`	`firstElement()`
`double`	`geometricMean()`
`int`	`get(int index)`
`double`	`getDouble(int index)` Returns double value at `index` position in the column.
`float`	`getFloat(int index)` Returns float value at `index` position in the column.
`int`	`getInt(int index)` Returns int value at `index` position in the column.
`long`	`getLong(int index)` Returns long value at `index` position in the column.
`String`	`getString(int row)` Returns a string representation of the value at the given row.
`boolean`	`isEmpty()` Returns true if the column has no data
`Selection`	`isEqualTo(int i)`
`Selection`	`isEqualTo(IntColumn other)`
`Selection`	`isEven()`
`Selection`	`isGreaterThan(int i)`
`Selection`	`isGreaterThan(IntColumn other)`
`Selection`	`isGreaterThanOrEqualTo(int i)`
`Selection`	`isIn(int... values)`
`Selection`	`isLessThan(int i)`
`Selection`	`isLessThan(IntColumn other)`
`Selection`	`isLessThanOrEqualTo(int i)`
`Selection`	`isMissing()`
`protected static boolean`	`isMissing(int value)`
`Selection`	`isNegative()`
`Selection`	`isNonNegative()`
`Selection`	`isNotEqualTo(int i)`
`Selection`	`isNotMissing()`
`Selection`	`isOdd()`
`Selection`	`isPositive()`
`Selection`	`isZero()`
`it.unimi.dsi.fastutil.ints.IntIterator`	`iterator()`
`double`	`kurtosis()`
`double`	`max()`
`double`	`mean()`
`double`	`median()`
`double`	`min()`
`DoubleColumn`	`pctChange()` Returns a new column with a percent change calculated
`double`	`percentile(double percentile)`
`double`	`populationVariance()`
`String`	`print()`
`double`	`product()`
`double`	`quadraticMean()` Returns the quadraticMean, aka the root-mean-square, for all values in this column
`double`	`quartile1()`
`double`	`quartile3()`
`double`	`range()`
`IntColumn`	`remainder(IntColumn column2)`
`it.unimi.dsi.fastutil.ints.IntComparator`	`rowComparator()`
`Selection`	`select(IntBiPredicate predicate, int value)`
`Selection`	`select(IntPredicate predicate)`
`IntColumn`	`select(Selection selection)`
`IntColumn`	`selectIf(IntPredicate predicate)`
`void`	`set(int index, int value)`
`void`	`set(int newValue, Selection rowSelection)` Conditionally update this column, replacing current values with newValue for all rows where the current value matches the selection criteria Example: myColumn.set(4, myColumn.isMissing()); // no more missing values
`int`	`size()`
`double`	`skewness()`
`void`	`sortAscending()`
`void`	`sortDescending()`
`double`	`standardDeviation()`
`Stats`	`stats()`
`long`	`sum()`
`long`	`sumIf(IntPredicate predicate)`
`Table`	`summary()`
`double`	`sumOfLogs()`
`double`	`sumOfSquares()`
`it.unimi.dsi.fastutil.ints.IntArrayList`	`top(int n)` Returns the largest ("top") n values in the column
`String`	`toString()`
`ColumnType`	`type()` Returns this column's ColumnType
`IntColumn`	`unique()` Returns a column of the same type as the receiver, containing only the unique values of the receiver.
`double`	`variance()`

Methods inherited from class tech.tablesaw.columns.AbstractColumn
columnMetadata, columnWidth, comment, id, metadata, name, setComment, setName

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface tech.tablesaw.mapping.IntMapUtils
asPercent, asRatio, divide, divide, divide, multiply, multiply, names, plus, plus, subtract

Methods inherited from interface tech.tablesaw.columns.Column
columnMetadata, columnWidth, comment, first, first, id, last, last, metadata, name, rolling, setComment, setName, subset, title

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

Methods inherited from interface java.lang.Iterable
spliterator

Methods inherited from interface tech.tablesaw.api.NumericColumn
add, add, addColumns, divide, divide, divideColumns, multiply, multiply, multiplyColumns, subtract, subtract, subtractColumns

Methods inherited from interface tech.tablesaw.api.IntConvertibleColumn
asIntegerSet

- Field Detail
  - MISSING_VALUE
```
public static final int MISSING_VALUE
```
  - DEFAULT_ARRAY_SIZE
```
public static final int DEFAULT_ARRAY_SIZE
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - IntColumn
```
public IntColumn(String name)
```
  - IntColumn
```
public IntColumn(String name,
                 int initialSize)
```
  - IntColumn
```
public IntColumn(String name,
                 it.unimi.dsi.fastutil.ints.IntArrayList data)
```
  - IntColumn
```
public IntColumn(String name,
                 int[] arr)
```
  - IntColumn
```
public IntColumn(ColumnMetadata metadata)
```
- Method Detail
  - isMissing
```
protected static boolean isMissing(int value)
```
  - data
```
public it.unimi.dsi.fastutil.ints.IntArrayList data()
```
  - size
```
public int size()
```
    Specified by:
    
    size in interface Column
  - type
```
public ColumnType type()
```
    Description copied from interface: Column
    
    Returns this column's ColumnType
    
    Specified by:
    
    type in interface Column
    
    Returns:
    
    ColumnType
  - append
```
public void append(int i)
```
  - set
```
public void set(int index,
                int value)
```
  - set
```
public void set(int newValue,
                Selection rowSelection)
```
    Conditionally update this column, replacing current values with newValue for all rows where the current value matches the selection criteria Example: myColumn.set(4, myColumn.isMissing()); // no more missing values
  - isLessThan
```
public Selection isLessThan(int i)
```
  - isGreaterThan
```
public Selection isGreaterThan(int i)
```
  - isGreaterThanOrEqualTo
```
public Selection isGreaterThanOrEqualTo(int i)
```
  - isLessThanOrEqualTo
```
public Selection isLessThanOrEqualTo(int i)
```
  - isNotEqualTo
```
public Selection isNotEqualTo(int i)
```
  - isEqualTo
```
public Selection isEqualTo(int i)
```
  - isMissing
```
public Selection isMissing()
```
    Specified by:
    
    isMissing in interface Column
  - isNotMissing
```
public Selection isNotMissing()
```
    Specified by:
    
    isNotMissing in interface Column
  - isIn
```
public Selection isIn(int... values)
```
  - isEqualTo
```
public Selection isEqualTo(IntColumn other)
```
  - isGreaterThan
```
public Selection isGreaterThan(IntColumn other)
```
  - isLessThan
```
public Selection isLessThan(IntColumn other)
```
  - summary
```
public Table summary()
```
    Specified by:
    
    summary in interface Column
  - countMissing
```
public int countMissing()
```
    Returns the count of missing values in this column
    
    Specified by:
    
    countMissing in interface Column
    
    Returns:
    
    missing values as int
  - countUnique
```
public int countUnique()
```
    Description copied from interface: Column
    
    Returns the count of unique values in this column.
    
    Specified by:
    
    countUnique in interface Column
    
    Returns:
    
    unique values as int
  - unique
```
public IntColumn unique()
```
    Description copied from interface: Column
    
    Returns a column of the same type as the receiver, containing only the unique values of the receiver.
    
    Specified by:
    
    unique in interface Column
    
    Returns:
    
    a Column
  - asSet
```
public it.unimi.dsi.fastutil.ints.IntSet asSet()
```
  - getString
```
public String getString(int row)
```
    Description copied from interface: Column
    
    Returns a string representation of the value at the given row.
    
    Specified by:
    
    getString in interface Column
    
    Parameters:
    
    row - The index of the row.
    
    Returns:
    
    value as String
  - emptyCopy
```
public IntColumn emptyCopy()
```
    Description copied from interface: Column
    
    Returns a copy of the receiver with no data. The column name and type are the same.
    
    Specified by:
    
    emptyCopy in interface Column
    
    Returns:
    
    a empty copy of Column
  - emptyCopy
```
public IntColumn emptyCopy(int rowSize)
```
    Description copied from interface: Column
    
    Returns an empty copy of the receiver, with its internal storage initialized to the given row size.
    
    Specified by:
    
    emptyCopy in interface Column
    
    Parameters:
    
    rowSize - the initial row size
    
    Returns:
    
    a Column
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Column
  - sortAscending
```
public void sortAscending()
```
    Specified by:
    
    sortAscending in interface Column
  - sortDescending
```
public void sortDescending()
```
    Specified by:
    
    sortDescending in interface Column
  - copy
```
public IntColumn copy()
```
    Description copied from interface: Column
    
    Returns a deep copy of the receiver
    
    Specified by:
    
    copy in interface Column
    
    Returns:
    
    a Column
  - isEmpty
```
public boolean isEmpty()
```
    Description copied from interface: Column
    
    Returns true if the column has no data
    
    Specified by:
    
    isEmpty in interface Column
    
    Returns:
    
    true if empty, false if not
  - appendCell
```
public void appendCell(String object)
```
    Specified by:
    
    appendCell in interface Column
    
    Specified by:
    
    appendCell in class AbstractColumn
  - get
```
public int get(int index)
```
    Specified by:
    
    get in interface IntMapUtils
  - getInt
```
public int getInt(int index)
```
    Description copied from interface: NumericColumn
    
    Returns int value at index position in the column. A conversion, if needed, could result in data or accuracy loss.
    
    Specified by:
    
    getInt in interface NumericColumn
    
    Parameters:
    
    index - position in column
    
    Returns:
    
    int value at position
  - getLong
```
public long getLong(int index)
```
    Description copied from interface: NumericColumn
    
    Returns long value at index position in the column. A conversion, if needed, could result in data or accuracy loss.
    
    Specified by:
    
    getLong in interface NumericColumn
    
    Parameters:
    
    index - position in column
    
    Returns:
    
    long value at position
  - getFloat
```
public float getFloat(int index)
```
    Description copied from interface: NumericColumn
    
    Returns float value at index position in the column. A conversion, if needed, could result in data or accuracy loss.
    
    Specified by:
    
    getFloat in interface NumericColumn
    
    Parameters:
    
    index - position in column
    
    Returns:
    
    float value at position
  - getDouble
```
public double getDouble(int index)
```
    Description copied from interface: NumericColumn
    
    Returns double value at index position in the column. A conversion, if needed, could result in data or accuracy loss.
    
    Specified by:
    
    getDouble in interface NumericColumn
    
    Parameters:
    
    index - position in column
    
    Returns:
    
    double value at position
  - rowComparator
```
public it.unimi.dsi.fastutil.ints.IntComparator rowComparator()
```
    Specified by:
    
    rowComparator in interface Column
  - firstElement
```
public int firstElement()
```
  - sum
```
public long sum()
```
    Specified by:
    
    sum in interface IntMapUtils
  - product
```
public double product()
```
    Specified by:
    
    product in interface NumericColumn
  - mean
```
public double mean()
```
    Specified by:
    
    mean in interface NumericColumn
  - median
```
public double median()
```
    Specified by:
    
    median in interface NumericColumn
  - quartile1
```
public double quartile1()
```
    Specified by:
    
    quartile1 in interface NumericColumn
  - quartile3
```
public double quartile3()
```
    Specified by:
    
    quartile3 in interface NumericColumn
  - percentile
```
public double percentile(double percentile)
```
    Specified by:
    
    percentile in interface NumericColumn
  - range
```
public double range()
```
    Specified by:
    
    range in interface NumericColumn
  - max
```
public double max()
```
    Specified by:
    
    max in interface NumericColumn
  - min
```
public double min()
```
    Specified by:
    
    min in interface NumericColumn
  - variance
```
public double variance()
```
    Specified by:
    
    variance in interface NumericColumn
  - populationVariance
```
public double populationVariance()
```
    Specified by:
    
    populationVariance in interface NumericColumn
  - standardDeviation
```
public double standardDeviation()
```
    Specified by:
    
    standardDeviation in interface NumericColumn
  - sumOfLogs
```
public double sumOfLogs()
```
    Specified by:
    
    sumOfLogs in interface NumericColumn
  - sumOfSquares
```
public double sumOfSquares()
```
    Specified by:
    
    sumOfSquares in interface NumericColumn
  - geometricMean
```
public double geometricMean()
```
    Specified by:
    
    geometricMean in interface NumericColumn
  - quadraticMean
```
public double quadraticMean()
```
    Returns the quadraticMean, aka the root-mean-square, for all values in this column
    
    Specified by:
    
    quadraticMean in interface NumericColumn
  - kurtosis
```
public double kurtosis()
```
    Specified by:
    
    kurtosis in interface NumericColumn
  - skewness
```
public double skewness()
```
    Specified by:
    
    skewness in interface NumericColumn
  - isPositive
```
public Selection isPositive()
```
  - isNegative
```
public Selection isNegative()
```
  - isNonNegative
```
public Selection isNonNegative()
```
  - isZero
```
public Selection isZero()
```
  - isEven
```
public Selection isEven()
```
  - isOdd
```
public Selection isOdd()
```
  - asFloatArray
```
public it.unimi.dsi.fastutil.floats.FloatArrayList asFloatArray()
```
  - asIntArray
```
public int[] asIntArray()
```
    Specified by:
    
    asIntArray in interface IntConvertibleColumn
  - asDoubleArray
```
public double[] asDoubleArray()
```
    Specified by:
    
    asDoubleArray in interface NumericColumn
    
    Specified by:
    
    asDoubleArray in interface Column
  - print
```
public String print()
```
    Specified by:
    
    print in interface Column
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - append
```
public void append(Column column)
```
    Specified by:
    
    append in interface Column
  - selectIf
```
public IntColumn selectIf(IntPredicate predicate)
```
  - select
```
public IntColumn select(Selection selection)
```
  - select
```
public Selection select(IntPredicate predicate)
```
  - select
```
public Selection select(IntBiPredicate predicate,
                        int value)
```
  - sumIf
```
public long sumIf(IntPredicate predicate)
```
  - countIf
```
public long countIf(IntPredicate predicate)
```
  - remainder
```
public IntColumn remainder(IntColumn column2)
```
  - top
```
public it.unimi.dsi.fastutil.ints.IntArrayList top(int n)
```
    Returns the largest ("top") n values in the column
    
    Parameters:
    
    n - The maximum number of records to return. The actual number will be smaller if n is greater than the number of observations in the column
    
    Returns:
    
    A list, possibly empty, of the largest observations
  - bottom
```
public it.unimi.dsi.fastutil.ints.IntArrayList bottom(int n)
```
    Returns the smallest ("bottom") n values in the column
    
    Parameters:
    
    n - The maximum number of records to return. The actual number will be smaller if n is greater than the number of observations in the column
    
    Returns:
    
    A list, possibly empty, of the smallest n observations
  - iterator
```
public it.unimi.dsi.fastutil.ints.IntIterator iterator()
```
    Specified by:
    
    iterator in interface it.unimi.dsi.fastutil.ints.IntIterable
    
    Specified by:
    
    iterator in interface Iterable<Integer>
  - stats
```
public Stats stats()
```
  - contains
```
public boolean contains(int i)
```
  - byteSize
```
public int byteSize()
```
    Description copied from interface: Column
    
    Returns the width of a cell in this column, in bytes.
    
    Specified by:
    
    byteSize in interface Column
    
    Returns:
    
    width in bytes
  - asBytes
```
public byte[] asBytes(int rowNumber)
```
    Returns the contents of the cell at rowNumber as a byte[]
    
    Specified by:
    
    asBytes in interface Column
    
    Parameters:
    
    rowNumber - index of the row
    
    Returns:
    
    content as byte[]
  - difference
```
public IntColumn difference()
```
    Description copied from interface: Column
    
    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. The Missing Value Indicator is used for the first cell in the new column. (e.g. IntColumn.MISSING_VALUE)
    
    Specified by:
    
    difference in interface Column
    
    Overrides:
    
    difference in class AbstractColumn
    
    Returns:
    
    a Column
  - cumSum
```
public IntColumn cumSum()
```
    Returns a new column with a cumulative sum calculated
  - cumProd
```
public IntColumn cumProd()
```
    Returns a new column with a cumulative product calculated
  - pctChange
```
public DoubleColumn pctChange()
```
    Returns a new column with a percent change calculated

Class IntColumn

Field Summary

Fields inherited from interface tech.tablesaw.columns.IntColumnUtils

Constructor Summary

Method Summary

Methods inherited from class tech.tablesaw.columns.AbstractColumn

Methods inherited from class java.lang.Object

Methods inherited from interface tech.tablesaw.mapping.IntMapUtils

Methods inherited from interface tech.tablesaw.columns.Column

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

Methods inherited from interface java.lang.Iterable

Methods inherited from interface tech.tablesaw.api.NumericColumn

Methods inherited from interface tech.tablesaw.api.IntConvertibleColumn

Field Detail

MISSING_VALUE

DEFAULT_ARRAY_SIZE

Constructor Detail

IntColumn

IntColumn

IntColumn

IntColumn

IntColumn

Method Detail

isMissing

data

size

type

append

set

set

isLessThan

isGreaterThan

isGreaterThanOrEqualTo

isLessThanOrEqualTo

isNotEqualTo

isEqualTo

isMissing

isNotMissing

isIn

isEqualTo

isGreaterThan

isLessThan

summary

countMissing

countUnique

unique

asSet

getString

emptyCopy

emptyCopy

clear

sortAscending

sortDescending

copy

isEmpty

appendCell

get

getInt

getLong

getFloat

getDouble

rowComparator

firstElement

sum

product

mean

median

quartile1

quartile3

percentile

range

max

min

variance

populationVariance

standardDeviation

sumOfLogs

sumOfSquares

geometricMean

quadraticMean