public class Grouping
extends Object
implements Iterable<Map.Entry<Object,SparseBitSet>>

构造器
构造器	说明
`Grouping()`
`Grouping(DataFrame df, Integer... columns)`
`Grouping(DataFrame df, KeyFunction<V> function, Integer... columns)`
`Grouping(DataFrame df, WindowFunction function)`
`Grouping(Series series)`
`Grouping(Series series, KeyFunction<V> function)`
`Grouping(Series series, TimeFunction<LocalDateTime,String> function)`
`Grouping(Series series, WindowFunction function)`

所有方法实例方法具体方法
修饰符和类型	方法	说明
`<V> DataFrame`	`apply(DataFrame df, Function<?,?> function)`
`<V> Series`	`apply(Series series, Function<?,?> function)`
`Set<Integer>`	`columns()`
`SparseBitSet`	`getGroup(Object key)`	Get a group
`Iterator<Map.Entry<Object,SparseBitSet>>`	`iterator()`
`Set<Object>`	`keys()`

public Grouping(Series series,
                KeyFunction<V> function)

public Grouping(Series series,
                TimeFunction<LocalDateTime,String> function)

public Grouping(Series series,
                WindowFunction function)

public Grouping(DataFrame df,
                KeyFunction<V> function,
                Integer... columns)

public Grouping(DataFrame df,
                Integer... columns)

public Grouping(DataFrame df,
                WindowFunction function)

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

public <V> DataFrame apply(DataFrame df,
                           Function<?,?> function)

类 Grouping