NumberMapFunctions (tablesaw-core 0.42.0 API)

All Known Subinterfaces:

NumericColumn<T>

All Known Implementing Classes:

DoubleColumn, FloatColumn, IntColumn, LongColumn, NumberColumn, ShortColumn
```
public interface NumberMapFunctions
```

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default DoubleColumn`	`abs()`	Returns a NumberColumn 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(NumericColumn<?> column2)`
`double[]`	`asDoubleArray()`
`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`	`cumMax()`	Returns a new column with a cumulative maximum calculated
`default DoubleColumn`	`cumMin()`	Returns a new column with a cumulative maximum calculated
`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(NumericColumn<?> column2)`
`double`	`getDouble(int i)`
`boolean`	`isEmpty()`
`boolean`	`isMissing(int rowNumber)`
`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(NumericColumn<?> column2)`
`String`	`name()`
`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 NumberColumn with the exponential power of each value in this column
`default DoubleColumn`	`power(NumericColumn<?> powerColumn)`
`default DoubleColumn`	`reciprocal()`	Returns a NumberColumn with the reciprocal (1/n) for each value n in this column
`default DoubleColumn`	`remainder(double val2)`
`default DoubleColumn`	`remainder(DoubleColumn column2)`
`default DoubleColumn`	`round()`
`default DoubleColumn`	`roundInt()`	Returns the rounded values as a NumberColumn.
`int`	`size()`
`default DoubleColumn`	`sqrt()`
`default DoubleColumn`	`square()`	Returns a NumberColumn 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(NumericColumn<?> column2)`
`double`	`sum()`

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

name
```
String name()
```

size
```
int size()
```

isEmpty
```
boolean isEmpty()
```

asDoubleArray
```
double[] asDoubleArray()
```

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(NumericColumn<?> column2)

add

default DoubleColumn add(NumericColumn<?> column2)

multiply

default DoubleColumn multiply(NumericColumn<?> column2)

divide

default DoubleColumn divide(NumericColumn<?> 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 NumberColumn with the exponential power of each value in this column

power

default DoubleColumn power(NumericColumn<?> powerColumn)

reciprocal
```
default DoubleColumn reciprocal()
```
Returns a NumberColumn with the reciprocal (1/n) for each value n in this column

square
```
default DoubleColumn square()
```
Returns a NumberColumn 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(DoubleColumn column2)

remainder

default DoubleColumn remainder(double val2)

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 NumberColumn 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

cumMax
```
default DoubleColumn cumMax()
```
Returns a new column with a cumulative maximum calculated

cumMin
```
default DoubleColumn cumMin()
```
Returns a new column with a cumulative maximum calculated

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

bin

default DoubleColumn bin(int binCount)

getDouble
```
double getDouble(int i)
```

isMissing
```
boolean isMissing(int rowNumber)
```

Interface NumberMapFunctions

Method Summary

Method Detail

normalize

name

size

isEmpty

asDoubleArray

asRatio

sum

asPercent

subtract

add

multiply

divide

add

subtract

divide

multiply

add

multiply

divide

subtract

power

power

reciprocal

square

sqrt

cubeRoot

cube

remainder

remainder

logN

log10

log1p

round

roundInt

abs

neg

difference

cumSum

cumProd

cumMax

cumMin

pctChange

bin

getDouble

isMissing