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    • Accumulator(T, U) Class
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  • Item Property Overloads
    • Item Property (C)
    • Item Property (Int32)
  • Item Property (C)

DataFrameR, CItem Property (C)

Extreme Optimization Numerical Libraries for .NET Professional
Gets, sets or adds a column with the specified key.

Namespace:  Extreme.DataAnalysis
Assembly:  Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.1
Syntax

C#
VB
C++
F#
Copy
public IVector this[
	C key
] { get; set; }
Public Default Property Item ( 
	key As C
) As IVector
	Get
	Set
public:
property IVector^ default[C key] {
	IVector^ get (C key);
	void set (C key, IVector^ value);
}
member Item : IVector with get, set

Parameters

key
Type: C
The key of the column.

Return Value

Type: IVector
The column with the specified key.
Exceptions

ExceptionCondition
KeyNotFoundException

The column could not be retrieved because no column with the specified key could be found.

DimensionMismatchException

The new value for the column does not have an index, and the length of the new column does not equal the number of rows in the data frame.

InvalidOperationException

The value is the first column added to the data frame and it does not have a valid index.

Remarks

When setting a value, if a column with the specified key already exists, this column is replaced with the new value. Otherwise, a new column is added.

See Also

Reference

DataFrameR, C Class
Item Overload
Extreme.DataAnalysis Namespace

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