tech.tablesaw.aggregate

Class AggregateFunctions

java.lang.Object

tech.tablesaw.aggregate.AggregateFunctions

public class AggregateFunctions
extends Object

Contains common utilities for double and long types

Field Summary

Fields

Modifier and Type	Field and Description
static AggregateFunction	count A function that calculates the count of the values in the column param
static AggregateFunction	first A function that returns the first item
static AggregateFunction	geometricMean
static AggregateFunction	kurtosis
static AggregateFunction	last A function that returns the last item
static AggregateFunction	max
static AggregateFunction	mean A function that calculates the mean of the values in the column param
static AggregateFunction	median
static AggregateFunction	min
static AggregateFunction	n
static AggregateFunction	percentile90
static AggregateFunction	percentile95
static AggregateFunction	percentile99
static AggregateFunction	populationVariance
static AggregateFunction	product
static AggregateFunction	quadraticMean Returns the quadratic mean, aka, the root-mean-square
static AggregateFunction	quartile1
static AggregateFunction	quartile3
static AggregateFunction	range
static AggregateFunction	skewness
static AggregateFunction	stdDev
static AggregateFunction	sum A function that calculates the sum of the values in the column param
static AggregateFunction	sumOfLogs
static AggregateFunction	sumOfSquares
static AggregateFunction	variance

Constructor Summary

Constructors

Constructor and Description
AggregateFunctions()

Method Summary

Modifier and Type	Method and Description
static double	meanDifference(FloatColumn column1, FloatColumn column2)
static double	percentile(double[] data, double percentile)
static double	sumDifference(FloatColumn column1, FloatColumn column2)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

first

public static AggregateFunction first

A function that returns the first item

last

public static AggregateFunction last

A function that returns the last item

count

public static AggregateFunction count

A function that calculates the count of the values in the column param

mean

public static AggregateFunction mean

A function that calculates the mean of the values in the column param

sum

public static AggregateFunction sum

A function that calculates the sum of the values in the column param

median

public static AggregateFunction median

n

public static AggregateFunction n

quartile1

public static AggregateFunction quartile1

quartile3

public static AggregateFunction quartile3

percentile90

public static AggregateFunction percentile90

percentile95

public static AggregateFunction percentile95

percentile99

public static AggregateFunction percentile99

range

public static AggregateFunction range

min

public static AggregateFunction min

max

public static AggregateFunction max

product

public static AggregateFunction product

geometricMean

public static AggregateFunction geometricMean

populationVariance

public static AggregateFunction populationVariance

quadraticMean

public static AggregateFunction quadraticMean

Returns the quadratic mean, aka, the root-mean-square

kurtosis

public static AggregateFunction kurtosis

skewness

public static AggregateFunction skewness

sumOfSquares

public static AggregateFunction sumOfSquares

sumOfLogs

public static AggregateFunction sumOfLogs

variance

public static AggregateFunction variance

stdDev

public static AggregateFunction stdDev

Constructor Detail

AggregateFunctions

public AggregateFunctions()

Method Detail

percentile

public static double percentile(double[] data,
                                double percentile)

meanDifference

public static double meanDifference(FloatColumn column1,
                                    FloatColumn column2)

sumDifference

public static double sumDifference(FloatColumn column1,
                                   FloatColumn column2)