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Geometry Service

Description

A Geometry Service contains utility methods that provide access to sophisticated and frequently used geometric operations. An ArcGIS Server website can only expose one geometry service with the static name Geometry.

Note:

Geometry input and output, where required, are usually packaged as an array. See the Geometry Objects topic.

Use a geometry service to do the following:

  • Buffer, project, and simplify geometry.
  • Calculate areas and lengths for geometry.
  • Determine spatial relations and label points.
  • Determine distances between geometries.
  • Apply Union, Intersection, and Difference operations between geometries.
  • Autocomplete, generalize, reshape, offset, trim or extend, and compute convex hulls of geometries.
  • Convert to or from geographic coordinate strings.

Supported operations

The Geometry Service resource is primarily a processing and algorithmic resource that supports operations related to geometries. The Geometry Service resource has the following operations:

OperationDetails
Areas and Lengths

Calculates areas and perimeter lengths for each polygon specified in the input array.

Auto Complete

Simplifies the process of constructing polygons that are adjacent to other polygons.

Buffer

Returns an array of polygons at the specified distances for the input geometry. An option is available to union buffer polygons at each distance.

Convex Hull

Returns the convex hull of the input geometry.

Cut

Splits the input polyline or polygon where it crosses a cutting polyline.

Densify

Densifies geometries by plotting intermediate points between existing vertices.

Difference

Constructs the set-theoretic difference between an array of geometries and another geometry.

Distance

Calculates the distance between two geometries.

Find Transformations

Gets a list of geographic transformations.

From GeoCoordinateString

Converts a list of strings in a well-known format to x,y coordinates.

Generalize

Returns generalized (Douglas-Peucker) versions of the input geometries.

Intersect

Constructs the set-theoretic intersection between an array of geometries and another geometry.

Label Points

Calculates an interior point for each polygon specified in the input array.

Lengths

Calculates the length of each polyline specified in the input array.

Offset

Constructs the offset of the given input polyline based on an offset distance.

Project

Returns an array of projected geometries.

Relation

Determines the pairs of geometries from the input geometry arrays that participate in the specified spatial relation.

Reshape

Reshapes a polyline or a part of a polygon using a reshaping line.

Simplify

Returns an array of topologically correct geometries.

To GeoCoordinateString

Converts a list of coordinates into strings in a well-known format based on the specified conversion type.

Trim/Extend

Trims or extends each polyline specified in the input array using the user-specified guide polylines.

Union

Constructs the set-theoretic union of the input geometries.

Request parameters

ParameterDetails
f

Description: The response format. The default response format is html.

Values: html | json

Example usage

URL for the geometry service on sampleserver6.

https://sampleserver6.arcgisonline.com/ArcGIS/rest/services/Utilities/Geometry/GeometryServer

JSON Response syntax

{"serviceDescription" : "<serviceDescription>"}

JSON Response example

{"serviceDescription" : "Test Geometry Service Description"}