程序包 org.meteoinfo.dataframe

类 SeriesGroupBy

java.lang.Object

org.meteoinfo.dataframe.GroupBy

org.meteoinfo.dataframe.SeriesGroupBy

所有已实现的接口:

Iterable<Map.Entry<Object,Series>>

public class SeriesGroupBy
extends GroupBy
implements Iterable<Map.Entry<Object,Series>>

作者:

Yaqiang Wang

字段概要

从类继承的字段 org.meteoinfo.dataframe.GroupBy

groups

构造器概要

构造器

构造器	说明
SeriesGroupBy(Grouping groups, Series series)	Constructor

方法概要

修饰符和类型	方法	说明
<V> Series	apply(Function<?,?> function)	Apply a function
Series	count()	Compute the sum of the numeric columns for each group.
Series	getGroup(Object key)	Get a group as DataFrame
Iterator<Map.Entry<Object,Series>>	iterator()
Series	max()	Compute the Maximum of the numeric columns for each group.
Series	mean()	Compute the mean of the numeric columns for each group.
Series	median()	Compute the median of the numeric columns for each group.
Series	min()	Compute the minimum of the numeric columns for each group.
Series	percentile(double quantile)	Compute the percentile of the numeric columns for each group.
Series	stdDev()	Compute the standard deviation of the numeric columns for each group.
Series	sum()	Compute the sum of the numeric columns for each group.

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.lang.Iterable

forEach, spliterator

构造器详细资料

SeriesGroupBy

public SeriesGroupBy(Grouping groups,
                     Series series)

Constructor

参数:

groups - The groups

series - The series

方法详细资料

getGroup

public Series getGroup(Object key)
                throws InvalidRangeException

Get a group as DataFrame

参数:

key - The group key

返回:

DataFrame

抛出:

InvalidRangeException

apply

public <V> Series apply(Function<?,?> function)

Apply a function

类型参数:

V - Data type

参数:

function - The function

返回:

Series

count

public Series count()

Compute the sum of the numeric columns for each group.

指定者:

count 在类中 GroupBy

返回:

the new series

sum

public Series sum()

Compute the sum of the numeric columns for each group.

指定者:

sum 在类中 GroupBy

返回:

the new series

mean

public Series mean()

Compute the mean of the numeric columns for each group.

指定者:

mean 在类中 GroupBy

返回:

the new series

min

public Series min()

Compute the minimum of the numeric columns for each group.

指定者:

min 在类中 GroupBy

返回:

the new data frame

max

public Series max()

Compute the Maximum of the numeric columns for each group.

指定者:

max 在类中 GroupBy

返回:

the new series

median

public Series median()

Compute the median of the numeric columns for each group.

指定者:

median 在类中 GroupBy

返回:

the new series

stdDev

public Series stdDev()

Compute the standard deviation of the numeric columns for each group.

指定者:

stdDev 在类中 GroupBy

返回:

the new series

percentile

public Series percentile(double quantile)

Compute the percentile of the numeric columns for each group.

指定者:

percentile 在类中 GroupBy

参数:

quantile - Quantile value

返回:

the new series

iterator

public Iterator<Map.Entry<Object,Series>> iterator()

指定者:

iterator 在接口中 Iterable<Map.Entry<Object,Series>>