MapPointBuilderEx Constructor(Double,Double,SpatialReference)

In This Topic

Creates a new MapPointBuilderEx instance with the given X and Y coordinates.

Syntax

C#
Visual Basic (Declaration)

public MapPointBuilderEx( 
   double x,
   double y,
   SpatialReference spatialReference
)

Public Function New( _
   ByVal x As Double, _
   ByVal y As Double, _
   Optional ByVal spatialReference As SpatialReference _
)

Parameters

x: The X-value.
y: The Y-value.
spatialReference: (Optional) The SpatialReference. The default value is null.

Remarks

No attribute awareness properties are set.

Example

Construct a MapPoint

// Use a builder convenience method or use a builder constructor.

// Create a 2D point without a spatial reference
MapPoint point2D = MapPointBuilderEx.CreateMapPoint(1, 2);
SpatialReference sr = point2D.SpatialReference; // sr = null
bool hasZ = point2D.HasZ;   // hasZ = false
bool hasM = point2D.HasM;   // hasM = false
bool hasID = point2D.HasID; // hasID = false
double x = point2D.X;   // x = 1
double y = point2D.Y;   // y = 2
double z = point2D.Z;   // z = 0 default value
double m = point2D.M;   // m is NaN default value
double id = point2D.ID; // id = 0 default value

// Or use a builderEx which doesn't need to run on the MCT. 
MapPointBuilderEx builderEx = new MapPointBuilderEx(1, 2);

// do something with the builder
builderEx.Y = 3;
point2D = builderEx.ToGeometry();
sr = point2D.SpatialReference; // sr = null
hasZ = point2D.HasZ;   // hasZ = false
hasM = point2D.HasM;   // hasM = false
hasID = point2D.HasID; // hasID = false
x = point2D.X;   // x = 1
y = point2D.Y;   // y = 3
z = point2D.Z;   // z = 0 default value
m = point2D.M;   // m is NaN default value
id = point2D.ID; // id = 0 default value

// Create a 2D point with a spatial reference
SpatialReference spatialReference = SpatialReferenceBuilder.CreateSpatialReference(4269);
point2D = MapPointBuilderEx.CreateMapPoint(1, 2, spatialReference);
sr = point2D.SpatialReference; // sr != null
int wkid = sr.Wkid; // wkid = 4269

// Or use a builder
builderEx = new MapPointBuilderEx(1, 2, spatialReference);

// Do something with the builder
builderEx.SetValues(3, 5);
point2D = builderEx.ToGeometry();
sr = point2D.SpatialReference; // sr != null
wkid = sr.Wkid; // wkid = 4269
x = point2D.X; // x = 3
y = point2D.Y; // y = 5

// Change the spatial reference of the builder
builderEx.SpatialReference = SpatialReferences.WGS84;
point2D = builderEx.ToGeometry();
sr = point2D.SpatialReference; // sr != null
wkid = sr.Wkid; // wkid = 4326
x = point2D.X; // x = 3
y = point2D.Y; // y = 5

// Create a 3D point with M
MapPoint pointZM = MapPointBuilderEx.CreateMapPoint(1, 2, 3, 4);
sr = pointZM.SpatialReference; // sr = null
hasZ = pointZM.HasZ;   // hasZ = true
hasM = pointZM.HasM;   // hasM = true
hasID = pointZM.HasID; // hasID = false
x = pointZM.X;   // x = 1
y = pointZM.Y;   // y = 2
z = pointZM.Z;   // z = 3
m = pointZM.M;   // m = 4
id = pointZM.ID; // id = 0 default value

// Create a 3D point with M and a spatial reference
pointZM = MapPointBuilderEx.CreateMapPoint(1, 2, 3, 4, spatialReference);
sr = pointZM.SpatialReference; // sr != null
wkid = sr.Wkid; // wkid = 4269

// Create a point from another point in three ways
MapPoint clone = pointZM.Clone() as MapPoint; // Has the same values including the spatial reference as pointZM
MapPoint anotherZM = MapPointBuilderEx.CreateMapPoint(pointZM);  // Has the same values including the spatial reference as pointZM
        
builderEx = new MapPointBuilderEx(pointZM); // Has the same values including the spatial reference as pointZM
// Do something with the builder
builderEx.HasM = false;
builderEx.ID = 7; // Setting the id also sets HasID = true
MapPoint pointZId = builderEx.ToGeometry();
sr = pointZId.SpatialReference; // sr != null
wkid = sr.Wkid; // wkid = 4269
hasZ = pointZId.HasZ;   // hasZ = true
hasM = pointZId.HasM;   // hasM = false
hasID = pointZId.HasID; // hasID = true
x = pointZId.X;   // x = 1
y = pointZId.Y;   // y = 2
z = pointZId.Z;   // z = 3
m = pointZId.M;   // m is NaN, default value
id = pointZId.ID; // id = 7

// Create a point with Z, M, and ID-values
MapPoint pointZMId = MapPointBuilderEx.CreateMapPoint(1, 2, 3, 4, 5, spatialReference);
sr = pointZMId.SpatialReference; // sr != null
wkid = sr.Wkid; // wkid = 4269
hasZ = pointZMId.HasZ;   // hasZ = true
hasM = pointZMId.HasM;   // hasM = true
hasID = pointZMId.HasID; // hasID = true
x = pointZMId.X;   // x = 1
y = pointZMId.Y;   // y = 2
z = pointZMId.Z;   // z = 3
m = pointZMId.M;   // m = 4
id = pointZMId.ID; // id = 5

// Pick and choose which attributes to include
MapPoint point = MapPointBuilderEx.CreateMapPoint(1, 2, false, 3, true, 4, true, 5);
sr = point.SpatialReference; // sr = null
hasZ = point.HasZ;   // hasZ = false
hasM = point.HasM;   // hasM = true
hasID = point.HasID; // hasID = true
x = point.X;   // x = 1
y = point.Y;   // y = 2
z = point.Z;   // z = 0, default value
m = point.M;   // m = 4
id = point.ID; // id = 5

// Or use a builder
builderEx = new(1, 2, true, 3, false, 4, true, 5);
// Do something with the builder
builderEx.ID = 7;
builderEx.SpatialReference = SpatialReferences.WGS84;
point = builderEx.ToGeometry();
sr = point.SpatialReference; // sr != null
wkid = sr.Wkid; // wkid = 4326
hasZ = point.HasZ;   // hasZ = true
hasM = point.HasM;   // hasM = false
hasID = point.HasID; // hasID = true
x = point.X;   // x = 1
y = point.Y;   // y = 2
z = point.Z;   // z = 0, default value
m = point.M;   // m is NaN, default value
id = point.ID; // id = 7

MapPoint Builder Properties

// MapPointBuilderEx constructors can run on any thread.

MapPoint point1 = null;
MapPoint point2 = null;

SpatialReference spatialReference = SpatialReferenceBuilder.CreateSpatialReference(54004);
        
MapPointBuilderEx mapPointBuilder = new MapPointBuilderEx(100, 200, spatialReference);
SpatialReference sr = mapPointBuilder.SpatialReference; // sr != null
int wkid = sr.Wkid; // wkid = 54004
bool hasZ = mapPointBuilder.HasZ;   // hasZ = false
bool hasM = mapPointBuilder.HasM;   // hasM = false
bool hasID = mapPointBuilder.HasID; // hasID = false
bool isEmpty = mapPointBuilder.IsEmpty; // isEmpty = false
double x = mapPointBuilder.X;   // x = 100
double y = mapPointBuilder.Y;   // y = 200
double z = mapPointBuilder.Z;   // z = 0, default value
double m = mapPointBuilder.M;   // m is NaN, default value
double id = mapPointBuilder.ID; // id = 0, default value

// Do something with the builder
mapPointBuilder.Z = 12; // Setting the z-value automatically sets HasZ property to true

point1 = mapPointBuilder.ToGeometry();
sr = point1.SpatialReference; // sr != null
wkid = sr.Wkid; // wkid = 54004
hasZ = point1.HasZ;   // hasZ = true
hasM = point1.HasM;   // hasM = false
hasID = point1.HasID; // hasID = false
x = point1.X;   // x = 100
y = point1.Y;   // y = 200
z = point1.Z;   // z = 12
m = point1.M;   // m is NaN, default value
id = point1.ID; // id = 0, default value

// Change some of the builder properties
mapPointBuilder.SetValues(11, 22);
mapPointBuilder.HasZ = false;
mapPointBuilder.HasM = true;
mapPointBuilder.M = 44;
        
// Create another point
point2 = mapPointBuilder.ToGeometry();

bool isEqual = point1.IsEqual(point2); // isEqual = false

// Set the builder to empty
// Sets X and Y to NaN. Sets other attributes to the default values.
// Does not change the attribute awareness.
mapPointBuilder.SetEmpty();

MapPoint point3 = mapPointBuilder.ToGeometry();
sr = point3.SpatialReference; // sr != null
wkid = sr.Wkid; // wkid = 54004
hasZ = point3.HasZ;        // hasZ = false
hasM = point3.HasM;        // hasM = true
hasID = point3.HasID;      // hasID = false
isEmpty = point3.IsEmpty;  // isEmpty = true
x = point3.X;              // x is NaN
y = point3.Y;              // y is NaN
z = point3.Z;              // z = 0, default value
m = point3.M;              // m is NaN, default value
id = point3.ID;            // ID = 0, default value

// Create a builder from a point
mapPointBuilder = new MapPointBuilderEx(point2); // point1 = (11, 22, 0, 44, 0)
sr = mapPointBuilder.SpatialReference; // sr != null
wkid = sr.Wkid; // wkid = 54004
hasZ = mapPointBuilder.HasZ;        // hasZ = false
hasM = mapPointBuilder.HasM;        // hasM = true
hasID = mapPointBuilder.HasID;      // hasID = false
isEmpty = mapPointBuilder.IsEmpty;  // isEmpty = false
x = mapPointBuilder.X;              // x = 11
y = mapPointBuilder.Y;              // y = 22
z = mapPointBuilder.Z;              // z = 0, default value
m = mapPointBuilder.M;              // m = 44
id = mapPointBuilder.ID;            // ID = 0, default value

// Setting attribute values automatically sets the corresponding flag to true
mapPointBuilder.Z = 150;
mapPointBuilder.ID = 2;

// Remove the spatial reference
mapPointBuilder.SpatialReference = null;
        
MapPoint point4 = mapPointBuilder.ToGeometry() as MapPoint;
sr = point3.SpatialReference; // sr = null
hasZ = point3.HasZ;        // hasZ = true
hasM = point3.HasM;        // hasM = true
hasID = point3.HasID;      // hasID = true
isEmpty = point3.IsEmpty;  // isEmpty = false
x = point3.X;              // x = 11
y = point3.Y;              // y = 22
z = point3.Z;              // z = 150
m = point3.M;              // m = 44
id = point3.ID;            // ID = 2

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.0 or higher.

Reference

MapPointBuilderEx Class
MapPointBuilderEx Members
Overload List

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