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Multipoint Class

An ordered collection of points that can be managed as a single geometry.
Inheritance Hierarchy

Namespace:  Esri.ArcGISRuntime.Geometry
Assembly:  Esri.ArcGISRuntime (in Esri.ArcGISRuntime.dll) Version: 100.9.0
Syntax
public class Multipoint : Geometry

The Multipoint type exposes the following members.

Constructors
Properties
  NameDescription
Public propertyDimension
Gets the number of dimensions for the geometry.
(Overrides GeometryDimension.)
Public propertyExtent
Gets the minimum enclosing Envelope of the instance
(Overrides GeometryExtent.)
Public propertyGeometryType
Gets the geometry type.
(Overrides GeometryGeometryType.)
Public propertyHasCurves
Gets a value indicating whether the geometry has any curves.
(Inherited from Geometry.)
Public propertyHasM
Gets a value indicating if the geometry has M
(Overrides GeometryHasM.)
Public propertyHasZ
Gets a value indicating if the geometry has Z.
(Overrides GeometryHasZ.)
Public propertyIsEmpty
Gets a value indicating whether or not the geometry is empty.
(Overrides GeometryIsEmpty.)
Public propertyPoints
Gets the read-only collection of MapPoint objects in the Multipoint instance.
Public propertyCode exampleSpatialReference
Gets the spatial reference of this geometry.
(Inherited from Geometry.)
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Methods
  NameDescription
Public methodEquals
Checks if two geometries are approximately same, within some tolerance.
(Inherited from Geometry.)
Public methodIsEqual
Compares two Multipoint for equality. This will check for a matching SpatialReference and points for a match.
(Overrides GeometryIsEqual(Geometry).)
Public methodToJson
Converts this geometry into an ArcGIS JSON representation.
(Inherited from Geometry.)
Public methodToString
Returns a String that represents the current Object.
(Overrides ObjectToString.)
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Remarks

Multipoint geometries represent an ordered collection of points. They can be used as the geometry of features and graphics, or as input or output for spatial operations. For features that consist of a very large number of points that share the same set of attribute values, multipoints may be more efficient to store and analyze in a geodatabase compared to using multiple point features.

A multipoint is composed of a single read-only collection of MapPoint. Use MultipointBuilder to build a multipoint one point at a time or to modify an existing multipoint.

Examples

WPF

Example Name: CreateGeometries

Create simple geometry types.

Code example screen shot.

C#
// Copyright 2018 Esri.
// 
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
// You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
// language governing permissions and limitations under the License.

using Esri.ArcGISRuntime.Geometry;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.Symbology;
using Esri.ArcGISRuntime.UI;

namespace ArcGISRuntime.WPF.Samples.CreateGeometries
{
    [ArcGISRuntime.Samples.Shared.Attributes.Sample(
        name: "Create geometries",
        category: "Geometry",
        description: "Create simple geometry types.",
        instructions: "Pan and zoom freely to see the different types of geometries placed onto the map.",
        tags: new[] { "area", "boundary", "line", "marker", "path", "shape" })]
    public partial class CreateGeometries
    {
        public CreateGeometries()
        {
            InitializeComponent();

            // Create the map, set the initial extent, and add the original point graphic.
            Initialize();
        }

        private void Initialize()
        {
            // Create a map with a topographic basemap.
            Map theMap = new Map(Basemap.CreateTopographic());

            // Assign the map to the MapView.
            MyMapView.Map = theMap;

            // Create a simple fill symbol - used to render a polygon covering Colorado.
            SimpleFillSymbol theSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Cross, System.Drawing.Color.Blue, null);

            // Create a simple line symbol - used to render a polyline border between California and Nevada.
            SimpleLineSymbol theSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, System.Drawing.Color.Blue, 3);

            // Create a simple marker symbol - used to render multi-points for various state capital locations in the Western United States.
            SimpleMarkerSymbol theSimpleMarkerSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Triangle, System.Drawing.Color.Blue, 14);

            // Create a simple marker symbol - used to render a map point where the Esri headquarters is located.
            SimpleMarkerSymbol theSimpleMarkerSymbol2 = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Diamond, System.Drawing.Color.Red, 18);

            // Create a graphics overlay to hold the various graphics.
            GraphicsOverlay theGraphicsOverlays = new GraphicsOverlay();

            // Get the graphic collection from the graphics overlay.
            GraphicCollection theGraphicCollection = theGraphicsOverlays.Graphics;

            // Add a graphic to the graphic collection - polygon with a simple fill symbol.
            theGraphicCollection.Add(new Graphic(CreatePolygon(), theSimpleFillSymbol));

            // Add a graphic to the graphic collection - polyline with a simple line symbol.
            theGraphicCollection.Add(new Graphic(CreatePolyline(), theSimpleLineSymbol));

            // Add a graphic to the graphic collection - map point with a simple marker symbol.
            theGraphicCollection.Add(new Graphic(CreateMapPoint(), theSimpleMarkerSymbol2));

            // Add a graphic to the graphic collection - multi-point with a simple marker symbol.
            theGraphicCollection.Add(new Graphic(CreateMultipoint(), theSimpleMarkerSymbol));

            // Set the map views graphics overlay to the created graphics overlay.
            MyMapView.GraphicsOverlays.Add(theGraphicsOverlays);

            // Zoom to the extent of an envelope with some padding (10 pixels).
            MyMapView.SetViewpointGeometryAsync(CreateEnvelope(), 10);
        }

        private Envelope CreateEnvelope()
        {
            // Create an envelope that covers the extent of the western United States.
            Envelope theEnvelope = new Envelope(-123.0, 33.5, -101.0, 48.0, SpatialReferences.Wgs84);

            // Return the geometry.
            return theEnvelope;
        }

        private Polygon CreatePolygon()
        {
            // Create a point collection with coordinates that approximates the boundary of Colorado.
            PointCollection thePointCollection = new PointCollection(SpatialReferences.Wgs84);
            thePointCollection.Add(-109.048, 40.998);
            thePointCollection.Add(-102.047, 40.998);
            thePointCollection.Add(-102.037, 36.989);
            thePointCollection.Add(-109.048, 36.998);

            // Create a polygon from the point collection.
            Polygon thePolygon = new Polygon(thePointCollection);

            // Return the geometry.
            return thePolygon;
        }

        private Polyline CreatePolyline()
        {
            // Create a point collection with coordinates that approximates the border between California and Nevada.
            PointCollection thePointCollection = new PointCollection(SpatialReferences.Wgs84);
            thePointCollection.Add(-119.992, 41.989);
            thePointCollection.Add(-119.994, 38.994);
            thePointCollection.Add(-114.620, 35.0);

            // Create a polyline from the point collection.
            Polyline thePolyline = new Polyline(thePointCollection);

            // Return the geometry.
            return thePolyline;
        }

        private MapPoint CreateMapPoint()
        {
            // Create a map point where the Esri headquarters is located.
            MapPoint theMapPoint = new MapPoint(-117.195800, 34.056295, SpatialReferences.Wgs84);

            // Return the geometry.
            return theMapPoint;
        }

        private Multipoint CreateMultipoint()
        {
            // Create a point collection with coordinates representing various state capital locations in the Western United States.
            PointCollection thePointCollection = new PointCollection(SpatialReferences.Wgs84);
            // - Sacramento, CA
            thePointCollection.Add(-121.491014, 38.579065);
            // - Olympia, WA
            thePointCollection.Add(-122.891366, 47.039231);
            // - Salem, OR
            thePointCollection.Add(-123.043814, 44.93326);
            // - Carson City, NV
            thePointCollection.Add(-119.766999, 39.164885);

            // Create a multi-point from the point collection.
            Multipoint theMultipoint = new Multipoint(thePointCollection);

            // Return the geometry.
            return theMultipoint;
        }

    }
}
XAML
<UserControl x:Class="ArcGISRuntime.WPF.Samples.CreateGeometries.CreateGeometries"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013">
    <Grid>
        <esri:MapView x:Name="MyMapView" />
    </Grid>
</UserControl>
See Also
Additional Examples
Hyperlink to ExampleDescription
ConvexHullCreate a convex hull for a given set of points. The convex hull is a polygon with shortest perimeter that encloses a set of points. As a visual analogy, consider a set of points as nails in a board. The convex hull of the points would be like a rubber band stretched around the outermost nails.
CreateGeometriesCreate simple geometry types.
DensifyAndGeneralizeA multipart geometry can be densified by adding interpolated points at regular intervals. Generalizing multipart geometry simplifies it while preserving its general shape. Densifying a multipart geometry adds more vertices at regular intervals.
DictionaryRendererGraphicsOverlayThis sample demonstrates applying a dictionary renderer to graphics, in order to display military symbology without the need for a feature table.