Returns a hierarchical index consisting of the current index grouped
by the specified column.
Namespace:
Extreme.DataAnalysis
Assembly:
Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.1
public IGrouping GroupBy<R1>(
C columnKey
)
Public Function GroupBy(Of R1) (
columnKey As C
) As IGrouping
public:
generic<typename R1>
IGrouping^ GroupBy(
C columnKey
)
member GroupBy :
columnKey : 'C -> IGrouping
Parameters
- columnKey
- Type: C
The name of the grouping column.
Type Parameters
- R1
- The element type of the grouping column.
Return Value
Type:
IGroupingA hierarchical index.
Reference