NumberMapFunctions (tablesaw-core 0.24.1 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	Description
`default NumberColumn`	`abs()`	Returns a doubleColumn with the absolute value of each value in this column
`default double`	`add(double val1, double val2)`
`default NumberColumn`	`add(Number value)`
`default NumberColumn`	`add(NumberColumn column2)`
`default NumberColumn`	`asPercent()`	Return the elements of this column as the percentages of their value relative to the sum of all elements
`default NumberColumn`	`asRatio()`	Return the elements of this column as the ratios of their value and the sum of all elements
`default NumberColumn`	`bin(int binCount)`
`default NumberColumn`	`cube()`
`default NumberColumn`	`cubeRoot()`
`default NumberColumn`	`cumProd()`	Returns a new column with a cumulative product calculated
`default NumberColumn`	`cumSum()`	Returns a new column with a cumulative sum calculated
`default NumberColumn`	`difference()`
`default double`	`divide(double val1, double val2)`
`default NumberColumn`	`divide(Number value)`
`default NumberColumn`	`divide(NumberColumn column2)`
`double`	`get(int i)`
`default NumberColumn`	`log10()`	Returns the base 10 log of the values in this column as a NumberColumn.
`default NumberColumn`	`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 NumberColumn`	`logN()`	Returns the natural log of the values in this column as a NumberColumn.
`default double`	`multiply(double val1, double val2)`
`default NumberColumn`	`multiply(Number value)`
`default NumberColumn`	`multiply(NumberColumn column2)`
`default NumberColumn`	`neg()`	For each item in the column, returns the same number with the sign changed.
`default NumberColumn`	`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 NumberColumn`	`pctChange()`	Returns a new column with a percent change calculated
`default NumberColumn`	`power(double power)`	Returns a doubleColumn with the exponential power of each value in this column
`default NumberColumn`	`remainder(NumberColumn column2)`
`default NumberColumn`	`round()`
`default NumberColumn`	`roundInt()`	Returns the rounded values as a NumberColumn.
`default NumberColumn`	`sqrt()`
`default NumberColumn`	`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 NumberColumn`	`subtract(Number value)`
`default NumberColumn`	`subtract(NumberColumn column2)`
`double`	`sum()`

Methods inherited from interface tech.tablesaw.columns.Column
append, appendCell, appendMissing, asBytes, asDoubleArray, asObjectArray, byteSize, clear, columnWidth, copy, countMissing, countUnique, create, emptyCopy, emptyCopy, first, getDouble, 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 NumberColumn 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 NumberColumn asRatio()
```
Return the elements of this column as the ratios of their value and the sum of all elements

sum
```
double sum()
```

asPercent
```
default NumberColumn asPercent()
```
Return the elements of this column as the percentages of their value relative to the sum of all elements

subtract

default NumberColumn subtract(NumberColumn column2)

add

default NumberColumn add(NumberColumn column2)

multiply

default NumberColumn multiply(NumberColumn column2)

divide

default NumberColumn divide(NumberColumn column2)

add

default NumberColumn add(Number value)

subtract

default NumberColumn subtract(Number value)

divide

default NumberColumn divide(Number value)

multiply

default NumberColumn 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 NumberColumn power(double power)
```
Returns a doubleColumn with the exponential power of each value in this column

square
```
default NumberColumn square()
```
Returns a doubleColumn with the square of each value in this column

sqrt
```
default NumberColumn sqrt()
```

cubeRoot
```
default NumberColumn cubeRoot()
```

cube
```
default NumberColumn cube()
```

remainder

default NumberColumn remainder(NumberColumn column2)

logN
```
default NumberColumn logN()
```
Returns the natural log of the values in this column as a NumberColumn.

log10
```
default NumberColumn log10()
```
Returns the base 10 log of the values in this column as a NumberColumn.

log1p
```
default NumberColumn 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 NumberColumn round()
```

roundInt
```
default NumberColumn 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 NumberColumn abs()
```
Returns a doubleColumn with the absolute value of each value in this column

neg
```
default NumberColumn 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 NumberColumn difference()
```

cumSum
```
default NumberColumn cumSum()
```
Returns a new column with a cumulative sum calculated

cumProd
```
default NumberColumn cumProd()
```
Returns a new column with a cumulative product calculated

pctChange
```
default NumberColumn pctChange()
```
Returns a new column with a percent change calculated

bin

default NumberColumn 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