Densify
- URL:https://<geometryservice-url>/densify
- Version Introduced:10.0
Description
The densify operation is performed on a geometry service resource. This operation densifies geometries by plotting points between existing vertices. At 10.1 and later, this operation calls simplify on the input geometries values when geodesic=true. You can provide arguments to the densify operation as query parameters defined in the following parameters table.
Request parameters
|
Parameter |
Details |
|---|---|
| geometries |
Specifies the array of geometries to densify. The structure of each geometry in the array is the same as the structure of the JSON geometry objects returned by ArcGIS REST API.  Note:The "geometries" property is an array of input geometries. All geometries in this array should be of the type defined by "geometryType". Syntax Example |
| sr |
Specifies the well-known ID (WKID) or a spatial reference JSON object for the input polylines values. For a list of valid WKID values, see Using spatial references. |
| maxSegmentLength |
Specifies that all segments longer than maxSegmentLength are replaced with sequences of lines no longer than maxSegmentLength. |
|
geodesic
(Optional) |
If geodesic is set to true, geodesic distance is used to calculate maxSegmentLength. Geodesic distance is the shortest path between two points along the ellipsoid of the earth. If geodesic is set to false, 2D Euclidean distance is used to calculate maxSegmentLength. The default is false. Values: true | false |
|
lengthUnit
(Optional) |
Specifies the length unit of maxSegmentLength. If geodesic is set to false, the units are derived from sr, and lengthUnit is ignored. If geodesic is set to true, lengthUnit must be a linear unit. If lengthUnit is not specified and sr is a projected coordinate system, the units are derived from sr. If lengthUnit is not specified and sr is a geographic coordinate system, the units are meters. For a list of valid units, see esriSRUnitType Constants and esriSRUnit2Type Constants. |
| f |
The response format. The default response format is html. Values: html | json | pjson |
Example usage
The following is a sample request URL for densify that demonstrates densifying a polyline such that the geodesic length of every segment is less than or equal to 1,000 miles:
https://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer/densify?sr=3395&geometries={"geometryType":"esriGeometryPolyline","geometries":[{"paths":[[[-17313284,2209625],[-14501308,7392483],[-13773503,6003036]]]}]}&maxSegmentLength=1000&geodesic=true&lengthUnit=9035&f=pjson
JSON Response syntax
{
"geometryType" : "<esriGeometryPoint | esriGeometryMultipoint | esriGeometryPolyline | esriGeometryPolygon>"
"geometries" : [ <geometry1>, <geometry1>, ..., <geometryN> ]
}
JSON Response example
{
"geometryType": "esriGeometryPolyline",
"geometries": [
{
"paths": [
[
[
-17313284,
2209624.9999999986
],
[
-16655062.049837345,
3744690.7461717259
],
[
-15791586.920996182,
5449830.3807660341
],
[
-14501308,
7392482.9999999981
],
[
-13773503.000000002,
6003036
]
]
]
}
]
}