NumberColumn (tablesaw-core 0.43.1 API)

java.lang.Object
- tech.tablesaw.columns.AbstractColumn<C,T>
- - tech.tablesaw.api.NumberColumn<C,T>

Type Parameters:

C - The column type

T - The (boxed) type of data in the column

All Implemented Interfaces:

Iterable<C>, Comparator<C>, NumericColumn<T>, Column<C>, NumberFilters, NumberMapFunctions, FilterSpec<C>, NumberFilterSpec<C>

Direct Known Subclasses:

DoubleColumn, FloatColumn, IntColumn, LongColumn, ShortColumn
```
public abstract class NumberColumn<C extends NumberColumn<C,T>,T extends Number>
extends AbstractColumn<C,T>
implements NumericColumn<T>
```
An abstract class that provides a partial implementation for columns of numeric data

Field Summary

Fields
Modifier and Type Field Description

protected it.unimi.dsi.fastutil.ints.IntComparator comparator

protected Locale locale
- Fields inherited from class tech.tablesaw.columns.AbstractColumn
  DEFAULT_ARRAY_SIZE

Fields
Modifier and Type	Field	Description
`protected it.unimi.dsi.fastutil.ints.IntComparator`	`comparator`
`protected Locale`	`locale`

Constructor Summary

Constructors
Modifier Constructor Description

protected NumberColumn(ColumnType type, String name, AbstractColumnParser<T> parser)

Constructors
Modifier	Constructor	Description
`protected`	`NumberColumn(ColumnType type, String name, AbstractColumnParser<T> parser)`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract NumericColumn<T>`	`bottom(int n)`	Returns the smallest ("bottom") n values in the column TODO(lwhite): Consider whether this should exclude missing
`int`	`byteSize()`	Returns the width of a cell in this column, in bytes.
`int`	`countMissing()`	Returns the count of missing values in this column
`protected abstract C`	`createCol(String name)`
`protected abstract C`	`createCol(String name, int size)`
`C`	`emptyCopy()`	Returns a copy of the receiver with no data.
`C`	`emptyCopy(int rowSize)`	Returns an empty copy of the receiver, with its internal storage initialized to the given row size.
`protected NumberColumnFormatter`	`getPrintFormatter()`	Returns the NumbetPrintFormatter for this column, or null
`String`	`getString(int row)`	Returns a string representation of the value at the given row.
`it.unimi.dsi.fastutil.ints.IntComparator`	`rowComparator()`	Compares the given ints, which refer to the indexes of the doubles in this column, according to the values of the doubles themselves
`NumberColumn<C,T>`	`set(DoublePredicate condition, T newValue)`	Sets the value of all elements in this column matching condition to be equal to newValue and returns this column
`NumberColumn<C,T>`	`set(DoublePredicate condition, NumberColumn<C,T> other)`	Updates this column where values matching the selection are replaced with the corresponding value from the given column
`void`	`setPrintFormatter(NumberFormat format, String missingValueIndicator)`	Sets the print formatter to a new `ColumnFormatter` constructed from the given number format and missing value indicator TODO: make these return the column?
`void`	`setPrintFormatter(NumberColumnFormatter formatter)`	Sets the print formatter to the argument
`abstract NumericColumn<T>`	`top(int n)`	Returns the largest ("top") n values in the column TODO(lwhite): Consider whether this should exclude missing

Methods inherited from class tech.tablesaw.columns.AbstractColumn
asStringColumn, filter, first, indexOf, inRange, last, map, max, min, name, parser, sampleN, sampleX, set, set, setName, setParser, sorted, subset, toString, type

Methods inherited from interface tech.tablesaw.columns.Column
allMatch, anyMatch, append, append, append, appendCell, appendCell, appendMissing, appendObj, asBytes, asList, asObjectArray, asSet, clear, columnWidth, contains, count, count, countUnique, equals, filter, first, get, getUnformattedString, indexOf, inRange, isMissing, last, map, map, mapInto, max, max, min, min, name, noneMatch, parser, print, reduce, reduce, removeMissing, sampleN, sampleX, set, set, set, set, set, set, setMissing, setMissingTo, setName, setParser, size, sortAscending, sortDescending, sorted, subset, title, type, unique, valueHash

Methods inherited from interface java.util.Comparator
compare, comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Methods inherited from interface java.lang.Iterable
forEach, iterator, spliterator

Methods inherited from interface tech.tablesaw.columns.numbers.NumberFilters
isBetweenExclusive, isBetweenInclusive, isCloseTo, isEqualTo, isEqualTo, isGreaterThan, isGreaterThan, isGreaterThanOrEqualTo, isGreaterThanOrEqualTo, isLessThan, isLessThan, isLessThanOrEqualTo, isLessThanOrEqualTo, isNegative, isNonNegative, isNotEqualTo, isNotEqualTo, isPositive, isZero, size

Methods inherited from interface tech.tablesaw.columns.numbers.NumberMapFunctions
abs, add, add, add, asPercent, asRatio, bin, cube, cubeRoot, cumMax, cumMin, cumProd, cumSum, difference, divide, divide, divide, isMissing, log10, log1p, logN, multiply, multiply, multiply, name, neg, normalize, pctChange, power, power, reciprocal, remainder, remainder, round, roundInt, size, sqrt, square, subtract, subtract, subtract

Methods inherited from interface tech.tablesaw.api.NumericColumn
allMatch, anyMatch, asDoubleArray, asDoubleColumn, asFloatColumn, asIntColumn, asLongColumn, asShortColumn, asStringColumn, autoCorrelation, autoCorrelation, copy, count, count, eval, eval, geometricMean, getDouble, interpolate, isEmpty, isIn, isMissing, isNotIn, isNotMissing, kendalls, kurtosis, lag, lead, mapInto, max, max, mean, median, min, min, noneMatch, pctChange, pearsons, percentile, populationVariance, product, quadraticMean, quartile1, quartile3, range, reduce, reduce, rolling, skewness, spearmans, standardDeviation, stats, sum, summarize, summary, sumOfLogs, sumOfSquares, variance, where

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

- Field Detail
  - locale
```
protected Locale locale
```
  - comparator
```
protected final it.unimi.dsi.fastutil.ints.IntComparator comparator
```
- Constructor Detail
  - NumberColumn
```
protected NumberColumn(ColumnType type,
                       String name,
                       AbstractColumnParser<T> parser)
```
- Method Detail
  - createCol
```
protected abstract C createCol(String name,
                               int size)
```
  - createCol
```
protected abstract C createCol(String name)
```
  - set
```
public NumberColumn<C,T> set(DoublePredicate condition,
                             NumberColumn<C,T> other)
```
    Updates this column where values matching the selection are replaced with the corresponding value from the given column
  - set
```
public NumberColumn<C,T> set(DoublePredicate condition,
                             T newValue)
```
    Sets the value of all elements in this column matching condition to be equal to newValue and returns this column
  - setPrintFormatter
```
public void setPrintFormatter(NumberFormat format,
                              String missingValueIndicator)
```
    Sets the print formatter to a new ColumnFormatter constructed from the given number format and missing value indicator TODO: make these return the column?
    
    Specified by:
    
    setPrintFormatter in interface NumericColumn<C extends NumberColumn<C,T>>
  - setPrintFormatter
```
public void setPrintFormatter(NumberColumnFormatter formatter)
```
    Sets the print formatter to the argument
    
    Specified by:
    
    setPrintFormatter in interface NumericColumn<C extends NumberColumn<C,T>>
  - getPrintFormatter
```
protected NumberColumnFormatter getPrintFormatter()
```
    Returns the NumbetPrintFormatter for this column, or null
  - top
```
public abstract NumericColumn<T> top(int n)
```
    Returns the largest ("top") n values in the column TODO(lwhite): Consider whether this should exclude missing
    
    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 abstract NumericColumn<T> bottom(int n)
```
    Returns the smallest ("bottom") n values in the column TODO(lwhite): Consider whether this should exclude missing
    
    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
  - getString
```
public String getString(int row)
```
    Returns a string representation of the value at the given row.
    
    Specified by:
    
    getString in interface Column<C extends NumberColumn<C,T>>
    
    Parameters:
    
    row - The index of the row.
    
    Returns:
    
    value as String
  - emptyCopy
```
public C emptyCopy()
```
    Returns a copy of the receiver with no data. The column name and type are the same.
    
    Specified by:
    
    emptyCopy in interface Column<C extends NumberColumn<C,T>>
    
    Specified by:
    
    emptyCopy in class AbstractColumn<C extends NumberColumn<C,T>,T extends Number>
    
    Returns:
    
    a empty copy of Column
  - emptyCopy
```
public C emptyCopy(int rowSize)
```
    Returns an empty copy of the receiver, with its internal storage initialized to the given row size.
    
    Specified by:
    
    emptyCopy in interface Column<C extends NumberColumn<C,T>>
    
    Parameters:
    
    rowSize - the initial row size
    
    Returns:
    
    a Column
  - rowComparator
```
public it.unimi.dsi.fastutil.ints.IntComparator rowComparator()
```
    Compares the given ints, which refer to the indexes of the doubles in this column, according to the values of the doubles themselves
    
    Specified by:
    
    rowComparator in interface Column<C extends NumberColumn<C,T>>
  - byteSize
```
public int byteSize()
```
    Returns the width of a cell in this column, in bytes.
    
    Specified by:
    
    byteSize in interface Column<C extends NumberColumn<C,T>>
    
    Returns:
    
    width in bytes
  - countMissing
```
public int countMissing()
```
    Returns the count of missing values in this column
    
    Specified by:
    
    countMissing in interface Column<C extends NumberColumn<C,T>>
    
    Returns:
    
    missing values as int

Class NumberColumn<C extends NumberColumn<C,T>,T extends Number>

Field Summary

Fields inherited from class tech.tablesaw.columns.AbstractColumn

Constructor Summary

Method Summary

Methods inherited from class tech.tablesaw.columns.AbstractColumn

Methods inherited from interface tech.tablesaw.columns.Column

Methods inherited from interface java.util.Comparator

Methods inherited from interface java.lang.Iterable

Methods inherited from interface tech.tablesaw.columns.numbers.NumberFilters

Methods inherited from interface tech.tablesaw.columns.numbers.NumberMapFunctions

Methods inherited from interface tech.tablesaw.api.NumericColumn

Methods inherited from class java.lang.Object

Field Detail

locale

comparator

Constructor Detail

NumberColumn

Method Detail

createCol

createCol

set

set

setPrintFormatter

setPrintFormatter

getPrintFormatter

top

bottom

getString

emptyCopy

emptyCopy

rowComparator

byteSize

countMissing