Matrix<T>.AggregateRowsBy Method

Definition

Namespace: Extreme.Mathematics
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23

Overload List

AggregateRowsBy<U>(IGrouping, AggregatorGroup<U>) Returns a new matrix that aggregates the rows according to the specified grouping.
AggregateRowsBy<C, U>(C, AggregatorGroup<U>) Returns a new matrix that aggregates the rows grouped by the specified row.
AggregateRowsBy<K, U>(IList<K>, AggregatorGroup<U>) Returns a new matrix that aggregates the rows grouped by the specified vector.
AggregateRowsBy<R, U>(R, Func<Vector<T>, U>) Applies the specified aggregation function to the values in each row grouped by the specified grouping row.

AggregateRowsBy<C, U>(C, AggregatorGroup<U>)

Returns a new matrix that aggregates the rows grouped by the specified row.
C# 
public Matrix<U> AggregateRowsBy<C, U>(
	C groupingRowKey,
	AggregatorGroup<U> aggregator
)

Parameters

groupingRowKey  C
The key of the grouping row.
aggregator  AggregatorGroup<U>
The aggregator to apply to each group.

Type Parameters

C
The type of the row keys.
U
The type of the result of the aggregator.

Return Value

Matrix<U>
A new matrix, with columns indexed by the unique elements of the row with key groupingRowKey, and values the result of applying aggregator to each group of the remaining rows.

AggregateRowsBy<U>(IGrouping, AggregatorGroup<U>)

Returns a new matrix that aggregates the rows according to the specified grouping.
C# 
public Matrix<U> AggregateRowsBy<U>(
	IGrouping grouping,
	AggregatorGroup<U> aggregator
)

Parameters

grouping  IGrouping
The grouping object.
aggregator  AggregatorGroup<U>
The aggregator to apply to each group.

Type Parameters

U
The type of the result of the aggregator.

Return Value

Matrix<U>
A new matrix, with columns indexed by the index associated with grouping, and as values the result of applying aggregator to each group of each row.

AggregateRowsBy<K, U>(IList<K>, AggregatorGroup<U>)

Returns a new matrix that aggregates the rows grouped by the specified vector.
C# 
public Matrix<U> AggregateRowsBy<K, U>(
	IList<K> groupingVector,
	AggregatorGroup<U> aggregator
)

Parameters

groupingVector  IList<K>
The vector that contains the group memberships.
aggregator  AggregatorGroup<U>
The aggregator to apply to each group.

Type Parameters

K
The element type of the grouping vector.
U
The type of the result of the aggregator.

Return Value

Matrix<U>
A new matrix, with columns indexed by the unique elements of groupingVector, and as values the result of applying aggregator to each group of each row.

AggregateRowsBy<R, U>(R, Func<Vector<T>, U>)

Applies the specified aggregation function to the values in each row grouped by the specified grouping row.
C# 
public Matrix<U> AggregateRowsBy<R, U>(
	R groupingRowKey,
	Func<Vector<T>, U> aggregator
)

Parameters

groupingRowKey  R
The key of the grouping row.
aggregator  Func<Vector<T>, U>
A function that transforms a vector of type T to a value of type U.

Type Parameters

R
The element type of the row index of the matrix.
U
The type of the result of the aggregation.

Return Value

Matrix<U>
A new matrix with columns indexed by the unique elements of row groupingRowKey and values the result of aggregator applied to each grouping.

See Also