NumberMapFunctions (tablesaw-core 0.24.9 API)

All Superinterfaces:

Column, it.unimi.dsi.fastutil.doubles.DoubleIterable, Iterable<Double>

All Known Subinterfaces:

NumberColumn

All Known Implementing Classes:

DoubleColumn
```
public interface NumberMapFunctions
extends Column, it.unimi.dsi.fastutil.doubles.DoubleIterable
```

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default DoubleColumn`	`abs()` Returns a doubleColumn with the absolute value of each value in this column
`default double`	`add(double val1, double val2)`
`default DoubleColumn`	`add(Number value)`
`default DoubleColumn`	`add(NumberColumn column2)`
`default DoubleColumn`	`asPercent()` Return the elements of this column as the percentages of their value relative to the sum of all elements
`default DoubleColumn`	`asRatio()` Return the elements of this column as the ratios of their value and the sum of all elements
`default DoubleColumn`	`bin(int binCount)`
`default DoubleColumn`	`cube()`
`default DoubleColumn`	`cubeRoot()`
`default DoubleColumn`	`cumProd()` Returns a new column with a cumulative product calculated
`default DoubleColumn`	`cumSum()` Returns a new column with a cumulative sum calculated
`default DoubleColumn`	`difference()`
`default double`	`divide(double val1, double val2)`
`default DoubleColumn`	`divide(Number value)`
`default DoubleColumn`	`divide(NumberColumn column2)`
`double`	`get(int i)`
`default DoubleColumn`	`log10()` Returns the base 10 log of the values in this column as a NumberColumn.
`default DoubleColumn`	`log1p()` Returns the natural log of the values in this column, after adding 1 to each so that zero values don't return -Infinity
`default DoubleColumn`	`logN()` Returns the natural log of the values in this column as a NumberColumn.
`default double`	`multiply(double val1, double val2)`
`default DoubleColumn`	`multiply(Number value)`
`default DoubleColumn`	`multiply(NumberColumn column2)`
`default DoubleColumn`	`neg()` For each item in the column, returns the same number with the sign changed.
`default DoubleColumn`	`normalize()` Returns a transformation of the data in this column such that the result has a mean of 0, and a standard deviation of 1
`default DoubleColumn`	`pctChange()` Returns a new column with a percent change calculated
`default DoubleColumn`	`power(double power)` Returns a doubleColumn with the exponential power of each value in this column
`default DoubleColumn`	`remainder(NumberColumn column2)`
`default DoubleColumn`	`round()`
`default DoubleColumn`	`roundInt()` Returns the rounded values as a NumberColumn.
`default DoubleColumn`	`sqrt()`
`default DoubleColumn`	`square()` Returns a doubleColumn with the square of each value in this column
`default double`	`subtract(double val1, double val2)` Returns the result of subtracting val2 from val1, after handling missing values
`default DoubleColumn`	`subtract(Number value)`
`default DoubleColumn`	`subtract(NumberColumn column2)`
`double`	`sum()`

Methods inherited from interface tech.tablesaw.columns.Column
append, appendCell, appendCell, appendMissing, asBytes, asDoubleArray, asObjectArray, byteSize, clear, columnWidth, copy, countMissing, countUnique, create, emptyCopy, emptyCopy, first, getDouble, getObject, getString, getUnformattedString, inRange, isEmpty, isMissing, isMissing, isNotMissing, lag, last, lead, name, print, removeMissing, rolling, rowComparator, rows, sampleN, sampleX, setName, size, sortAscending, sortDescending, subset, summarizeIf, summary, title, type, unique, where

Methods inherited from interface it.unimi.dsi.fastutil.doubles.DoubleIterable
forEach, forEach, iterator

Methods inherited from interface java.lang.Iterable
spliterator

- Method Detail
  - normalize
```
default DoubleColumn normalize()
```
    Returns a transformation of the data in this column such that the result has a mean of 0, and a standard deviation of 1
  - asRatio
```
default DoubleColumn asRatio()
```
    Return the elements of this column as the ratios of their value and the sum of all elements
  - sum
```
double sum()
```
  - asPercent
```
default DoubleColumn asPercent()
```
    Return the elements of this column as the percentages of their value relative to the sum of all elements
  - subtract
```
default DoubleColumn subtract(NumberColumn column2)
```
  - add
```
default DoubleColumn add(NumberColumn column2)
```
  - multiply
```
default DoubleColumn multiply(NumberColumn column2)
```
  - divide
```
default DoubleColumn divide(NumberColumn column2)
```
  - add
```
default DoubleColumn add(Number value)
```
  - subtract
```
default DoubleColumn subtract(Number value)
```
  - divide
```
default DoubleColumn divide(Number value)
```
  - multiply
```
default DoubleColumn multiply(Number value)
```
  - add
```
default double add(double val1,
                   double val2)
```
  - multiply
```
default double multiply(double val1,
                        double val2)
```
  - divide
```
default double divide(double val1,
                      double val2)
```
  - subtract
```
default double subtract(double val1,
                        double val2)
```
    Returns the result of subtracting val2 from val1, after handling missing values
  - power
```
default DoubleColumn power(double power)
```
    Returns a doubleColumn with the exponential power of each value in this column
  - square
```
default DoubleColumn square()
```
    Returns a doubleColumn with the square of each value in this column
  - sqrt
```
default DoubleColumn sqrt()
```
  - cubeRoot
```
default DoubleColumn cubeRoot()
```
  - cube
```
default DoubleColumn cube()
```
  - remainder
```
default DoubleColumn remainder(NumberColumn column2)
```
  - logN
```
default DoubleColumn logN()
```
    Returns the natural log of the values in this column as a NumberColumn.
  - log10
```
default DoubleColumn log10()
```
    Returns the base 10 log of the values in this column as a NumberColumn.
  - log1p
```
default DoubleColumn log1p()
```
    Returns the natural log of the values in this column, after adding 1 to each so that zero values don't return -Infinity
  - round
```
default DoubleColumn round()
```
  - roundInt
```
default DoubleColumn roundInt()
```
    Returns the rounded values as a NumberColumn. Use roundLong() if larger
    
    Throws:
    
    ClassCastException - if the returned value will not fit in an int
  - abs
```
default DoubleColumn abs()
```
    Returns a doubleColumn with the absolute value of each value in this column
  - neg
```
default DoubleColumn neg()
```
    For each item in the column, returns the same number with the sign changed. For example: -1.3 returns 1.3, 2.135 returns -2.135 0 returns 0
  - difference
```
default DoubleColumn difference()
```
  - cumSum
```
default DoubleColumn cumSum()
```
    Returns a new column with a cumulative sum calculated
  - cumProd
```
default DoubleColumn cumProd()
```
    Returns a new column with a cumulative product calculated
  - pctChange
```
default DoubleColumn pctChange()
```
    Returns a new column with a percent change calculated
  - bin
```
default DoubleColumn bin(int binCount)
```
  - get
```
double get(int i)
```

Interface NumberMapFunctions

Method Summary

Methods inherited from interface tech.tablesaw.columns.Column

Methods inherited from interface it.unimi.dsi.fastutil.doubles.DoubleIterable

Methods inherited from interface java.lang.Iterable

Method Detail

normalize

asRatio

sum

asPercent

subtract

add

multiply

divide

add

subtract

divide

multiply

add

multiply

divide

subtract

power

square

sqrt

cubeRoot

cube

remainder

logN

log10

log1p

round

roundInt

abs

neg

difference

cumSum

cumProd

pctChange

bin

get