ImportFromWKT Method

Creates a geometry from the input well-known text string.

Syntax

C#
Visual Basic (Declaration)

Geometry ImportFromWKT( 
   WKTImportFlags importFlags,
   string wktString,
   SpatialReference spatialReference
)

Function ImportFromWKT( _
   ByVal importFlags As WKTImportFlags, _
   ByVal wktString As String, _
   ByVal spatialReference As SpatialReference _
) As Geometry

Parameters

importFlags: A combination of WKTImportFlags which determines how the geometry is imported.
wktString: The input WKT string. The string must be OGC compliant.
spatialReference: The spatial reference of the output geometry.

Return Value

A Geometry that corresponds to the .

Exceptions

Exception	Description
System.ArgumentNullException	wktString is null or empty.

Example

// create a point with z, m
MapPoint point = MapPointBuilder.CreateMapPoint(100, 200, 300, 400, SpatialReferences.WebMercator);

// set the flags
WKTExportFlags wktExportFlags = WKTExportFlags.wktExportDefaults;
WKTImportFlags wktImportFlags = WKTImportFlags.wktImportDefaults;

// export and import
string wktString = GeometryEngine.Instance.ExportToWKT(wktExportFlags, point);
MapPoint importPoint = GeometryEngine.Instance.ImportFromWKT(wktImportFlags, wktString, SpatialReferences.WebMercator) as MapPoint;

double x = importPoint.X;       // x = 100
double y = importPoint.Y;       // y = 200
bool hasZ = importPoint.HasZ;   // hasZ = true
double z = importPoint.Z;       // z = 300
bool hasM = importPoint.HasM;   // hasM = true
double m = importPoint.M;       // m = 400

// export without z
WKTExportFlags exportFlagsNoZ = WKTExportFlags.wktExportStripZs;
wktString = GeometryEngine.Instance.ExportToWKT(exportFlagsNoZ, point);
importPoint = GeometryEngine.Instance.ImportFromWKT(wktImportFlags, wktString, SpatialReferences.WebMercator) as MapPoint;

x = importPoint.X;        // x = 100
y = importPoint.Y;        // y = 200
hasZ = importPoint.HasZ;  // hasZ = false
z = importPoint.Z;        // z = 0
hasM = importPoint.HasM;  // hasM = true
m = importPoint.M;        // m = 400

// export without m
WKTExportFlags exportFlagsNoM = WKTExportFlags.wktExportStripMs;
wktString = GeometryEngine.Instance.ExportToWKT(exportFlagsNoM, point);
importPoint = GeometryEngine.Instance.ImportFromWKT(wktImportFlags, wktString, SpatialReferences.WebMercator) as MapPoint;

x = importPoint.X;        // x = 100
y = importPoint.Y;        // y = 200
hasZ = importPoint.HasZ;  // hasZ = true
z = importPoint.Z;        // z = 300
hasM = importPoint.HasM;  // hasM = false
m = importPoint.M;        // m = Nan

// export without z, m
wktString = GeometryEngine.Instance.ExportToWKT(exportFlagsNoZ | exportFlagsNoM, point);
importPoint = GeometryEngine.Instance.ImportFromWKT(wktImportFlags, wktString, SpatialReferences.WebMercator) as MapPoint;

x = importPoint.X;        // x = 100
y = importPoint.Y;        // y = 200
hasZ = importPoint.HasZ;  // hasZ = false
z = importPoint.Z;        // z = 0
hasM = importPoint.HasM;  // hasM = false
m = importPoint.M;        // m = Nan

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

Reference

IGeometryEngine Interface
IGeometryEngine Members