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SqlSpatialFunctions.Reduce Method (DbGeometry, Nullable<Double>)

.NET Framework 4.5

Returns an approximation of the given geography instance produced by running the Douglas-Peucker algorithm on the instance with the given tolerance.

Namespace:  System.Data.Objects.SqlClient
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

[EdmFunctionAttribute("SqlServer", "REDUCE")]
public static DbGeometry Reduce(
	DbGeometry geometryValue,
	Nullable<double> tolerance


Type: System.Data.Spatial.DbGeometry

The geometry value.

Type: System.Nullable<Double>

The tolerance to input to the Douglas-Peucker algorithm. tolerance must be a positive number.

Return Value

Type: System.Data.Spatial.DbGeometry
Returns DbGeometry.

.NET Framework

Supported in: 4.6, 4.5

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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