SqlSpatialFunctions Methods

.NET Framework (current version)
 

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

NameDescription
System_CAPS_pubmethodSystem_CAPS_staticAsTextZM(DbGeography)

Returns the Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation of a geography instance augmented with any Z (elevation) and M (measure) values carried by the instance.

System_CAPS_pubmethodSystem_CAPS_staticAsTextZM(DbGeometry)

Returns the Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation of a geography instance augmented with any Z (elevation) and M (measure) values carried by the instance.

System_CAPS_pubmethodSystem_CAPS_staticBufferWithTolerance(DbGeography, Nullable<Double>, Nullable<Double>, Nullable<Boolean>)

Returns a geometric object representing the union of all point values whose distance from a geography instance is less than or equal to a specified value, allowing for a specified tolerance.

System_CAPS_pubmethodSystem_CAPS_staticBufferWithTolerance(DbGeometry, Nullable<Double>, Nullable<Double>, Nullable<Boolean>)

Returns a geometric object representing the union of all point values whose distance from a geometry instance is less than or equal to a specified value, allowing for a specified tolerance.

System_CAPS_pubmethodSystem_CAPS_staticEnvelopeAngle(DbGeography)

Returns the maximum angle between the point returned by EnvelopeCenter() and a point in the geography instance in degrees.

System_CAPS_pubmethodSystem_CAPS_staticEnvelopeCenter(DbGeography)

Returns a point that can be used as the center of a bounding circle for the geography instance.

System_CAPS_pubmethodSystem_CAPS_staticFilter(DbGeography, DbGeography)

Offers a fast, index-only intersection method to determine if a geography instance intersects another SqlGeography instance, assuming an index is available.

System_CAPS_pubmethodSystem_CAPS_staticFilter(DbGeometry, DbGeometry)

Offers a fast, index-only intersection method to determine if a geography instance intersects another SqlGeometry instance, assuming an index is available.

System_CAPS_pubmethodSystem_CAPS_staticInstanceOf(DbGeography, String)

Tests if the SqlGeography instance is the same as the specified type.

System_CAPS_pubmethodSystem_CAPS_staticInstanceOf(DbGeometry, String)

Tests if the SqlGeometry instance is the same as the specified type.

System_CAPS_pubmethodSystem_CAPS_staticMakeValid(DbGeometry)

Converts an invalid geometry instance into a geometry instance with a valid Open Geospatial Consortium (OGC) type.

System_CAPS_pubmethodSystem_CAPS_staticNumRings(DbGeography)

Returns the total number of rings in a Polygon instance.

System_CAPS_pubmethodSystem_CAPS_staticPointGeography(Nullable<Double>, Nullable<Double>, Nullable<Int32>)

Constructs a geography instance representing a Point instance from its x and y values and a spatial reference ID (SRID).

System_CAPS_pubmethodSystem_CAPS_staticPointGeometry(Nullable<Double>, Nullable<Double>, Nullable<Int32>)

Constructs a geometry instance representing a Point instance from its x and y values and a spatial reference ID (SRID).

System_CAPS_pubmethodSystem_CAPS_staticReduce(DbGeography, Nullable<Double>)

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

System_CAPS_pubmethodSystem_CAPS_staticReduce(DbGeometry, Nullable<Double>)

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

System_CAPS_pubmethodSystem_CAPS_staticRingN(DbGeography, Nullable<Int32>)

Returns the specified ring of the SqlGeography instance: 1 ≤ n ≤ NumRings().

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