DataFrame<R, C>.AddColumn Method

public DataFrame<R, C> AddColumn(
	C key,
	IVector values
)

Public Function AddColumn ( 
	key As C,
	values As IVector
) As DataFrame(Of R, C)

public:
DataFrame<R, C>^ AddColumn(
	C key, 
	IVector^ values
)

member AddColumn : 
        key : 'C * 
        values : IVector -> DataFrame<'R, 'C> 

Parameters

key  C

The key of the column.

values  IVector

The data for the column.

Return Value

If values has a row index with the same element type as the data frame, a left join between the data frame's index and that index is used to determine the order of the elements of values in the new column.

If values has no index, or if the index has a different element type, elements are added in the order provided and their count must equal the existing row count. A first column in a completely empty data frame establishes its row count.

The new column has no explicit dataframe-owned metadata. Use SetColumnRole(C, ColumnRole) or SetColumnSemantics(C, ColumnSemanticInfo) to assign metadata after adding the column.

public DataFrame<R, C> AddColumn<T>(
	C key,
	Vector<T> values
)

Public Function AddColumn(Of T) ( 
	key As C,
	values As Vector(Of T)
) As DataFrame(Of R, C)

public:
generic<typename T>
DataFrame<R, C>^ AddColumn(
	C key, 
	Vector<T>^ values
)

member AddColumn : 
        key : 'C * 
        values : Vector<'T> -> DataFrame<'R, 'C> 

Parameters

key  C

The key of the column.

values  Vector<T>

The data for the column.

Type Parameters

T

Return Value

If values has a row index with the same element type as the data frame, a left join between the data frame's index and that index is used to determine the order of the elements of values in the new column.

If values has no index, or if the index has a different element type, elements are added in the order provided and their count must equal the existing row count. A first column in a completely empty data frame establishes its row count.

The new column has no explicit dataframe-owned metadata. Use SetColumnRole(C, ColumnRole) or SetColumnSemantics(C, ColumnSemanticInfo) to assign metadata after adding the column.

public DataFrame<R, C> AddColumn<T>(
	C key,
	IList<T> values
)

Public Function AddColumn(Of T) ( 
	key As C,
	values As IList(Of T)
) As DataFrame(Of R, C)

public:
generic<typename T>
DataFrame<R, C>^ AddColumn(
	C key, 
	IList<T>^ values
)

member AddColumn : 
        key : 'C * 
        values : IList<'T> -> DataFrame<'R, 'C> 

Parameters

key  C

The key of the column.

values  IList<T>

A list containing the data for the column.

Type Parameters

T

Return Value

If values has a row index with the same element type as the data frame, a left join between the data frame's index and that index is used to determine the order of the elements of values in the new column.

If values has no index, or if the index has a different element type, elements are added in the order provided and their count must equal the existing row count. A first column in a completely empty data frame establishes its row count.

The new column has no explicit dataframe-owned metadata. Use SetColumnRole(C, ColumnRole) or SetColumnSemantics(C, ColumnSemanticInfo) to assign metadata after adding the column.

Reference