| FRAMES | NO FRAMES | Description | Parameters | Examples | Response |
| URL | http://<geometryservice-url>/lengths |
|---|---|
| Parent Resource | Geometry Service |
The lengths operation is performed on a geometry service resource. This operation calculates the lengths of each polyline specified in the input array.
You can provide arguments to the lengths operation as query parameters defined in the parameters table below.
| Parameter | Details |
|---|---|
| f | Description: The response format.
The default response format is html. Values: html | json |
| polylines | Description: The array of
polylines whose lengths are to be computed. The spatial
reference of the polylines is specified by sr. The structure of each polyline in the array is same as the
structure of the JSON polyline
objects returned by the ArcGIS REST API. Syntax and Examples: JSON Structures:Syntax:[ <polyline1>, <polyline2> ] Example: [
{
"paths" : [
[[-117,34],[-116,34],[-117,33]],
[[-115,44],[-114,43],[-115,43]]
]
},
{
"paths" : [
[[32.49,17.83],[31.96,17.59],[30.87,17.01],[30.11,16.86]]
]
}
]
URL based:For a large set of geometries, you can specify a URL to the input geometries stored in a JSON structure in a file on a public server.
Syntax: |
| sr | Description: The well-known ID of
the spatial reference or a spatial reference json object for the input polylines. For a list of valid
WKID values, see Projected coordinate Systems
and Geographic coordinate Systems. |
| lengthUnit |
Description: The length unit in which perimeters of polygons will be calculated. It can be any esriUnits constant.
If unit is not specified, the units are derived from sr. For a list of valid units, see esriSRUnitTypeconstants and esriSRUnit2Type Constants.
|
| geodesic |
Description: If polylines are in geographic coordinate system, then geodesic needs to be set to true in order to
calculate the ellipsoidal shortest path distance between each pair of the vertices in the polylines. If lengthUnit is not specificed, then output is always returned in meters.
|
Example 1: In this example, the length of two input polylines are calculated.
http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer/lengths?{
"lengths" : [ <length1>, <length2> ]
}
{
"lengths" : [ 456.036465954783, 277.294288451794 ]
}