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  • LookupNearest Method Overloads
    • LookupNearest Method (IEnumerable(T), Direction)
    • LookupNearest Method (T, Direction)
  • LookupNearest Method (T, Direction)
IndexTLookupNearest Method (T, Direction)Extreme Optimization Numerical Libraries for .NET Professional
Finds the key nearest to the specified value in the index.

Namespace: Extreme.DataAnalysis
Assembly: Extreme.Numerics.Net40 (in Extreme.Numerics.Net40.dll) Version: 6.0.16073.0 (6.0.17114.0)
Syntax

C#
VB
C++
F#
Copy
public int LookupNearest(
	T key,
	Direction direction
)
Public Function LookupNearest ( 
	key As T,
	direction As Direction
) As Integer
public:
int LookupNearest(
	T key, 
	Direction direction
)
member LookupNearest : 
        key : 'T * 
        direction : Direction -> int 

Parameters

key
Type: T
The key to locate.
direction
Type: Extreme.DataAnalysisDirection
The direction to look for the key if an exact match is not found.

Return Value

Type: Int32
If a key was found, the zero-based position of the key closest to key in the direction specified by direction; otherwise -1.
Exceptions

ExceptionCondition
InvalidOperationExceptionThe index is not sorted.
Remarks

This operation is only allowed on sorted indexes.

The only situation where a lookup can fail is if key is smaller than the first key (if direction is Forward) or greater than the last key (if direction is Backward).

Version Information

Numerical Libraries

Supported in: 6.0
See Also

Reference

IndexT Class
LookupNearest Overload
Extreme.DataAnalysis Namespace

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