arcgis-geometry-operations

ArcGIS Geometry Operations

Use this skill for creating geometries and performing spatial operations with geometry operators.

Important: The geometryEngine and geometryEngineAsync modules were removed in v5.0 (deprecated since 4.29). Use geometry operators exclusively.

Import Patterns

Direct ESM Imports

import Point from "@arcgis/core/geometry/Point.js";
import Polygon from "@arcgis/core/geometry/Polygon.js";
import bufferOperator from "@arcgis/core/geometry/operators/bufferOperator.js";
import unionOperator from "@arcgis/core/geometry/operators/unionOperator.js";

Dynamic Imports (CDN)

const Point = await $arcgis.import("@arcgis/core/geometry/Point.js");
const [bufferOperator, unionOperator] = await $arcgis.import([
  "@arcgis/core/geometry/operators/bufferOperator.js",
  "@arcgis/core/geometry/operators/unionOperator.js",
]);

Geometry Classes Overview

Class	Use Case	Import Path
Point	Single location (x, y, z, m)	geometry/Point.js
Polyline	Lines and paths	geometry/Polyline.js
Polygon	Areas with rings	geometry/Polygon.js
Multipoint	Collection of points	geometry/Multipoint.js
Extent	Bounding box	geometry/Extent.js
Circle	Circular geometry	geometry/Circle.js
Mesh	3D mesh with vertices and faces	geometry/Mesh.js

Creating Geometries

Point

// Using autocast (plain object)
const point = {
  type: "point",
  longitude: -118.80657,
  latitude: 34.02749,
  z: 1000,
  spatialReference: { wkid: 4326 },
};

// Using x, y coordinates (projected)
const point = {
  type: "point",
  x: -13044706,
  y: 4036320,
  spatialReference: { wkid: 102100 },
};

Polyline

const polyline = {
  type: "polyline",
  paths: [
    [
      [-118.821, 34.014],
      [-118.815, 34.014],
      [-118.809, 34.01],
    ],
  ],
  spatialReference: { wkid: 4326 },
};

// Multi-path
const multiPath = {
  type: "polyline",
  paths: [
    [
      [-118.821, 34.014],
      [-118.815, 34.014],
    ],
    [
      [-118.815, 34.022],
      [-118.813, 34.022],
    ],
  ],
};