| FRAMES | NO FRAMES | Description | Parameters | Examples | Response |
| URL | http://<geometryservice-url>/trimExtend |
|---|---|
| Parent Resource | Geometry Service |
The trimExtend operation is performed on a geometry service resource. This operation trims / extends each polyline specified in the input array, using the user specified guide polylines. When trimming features, the part to the left of the oriented cutting line is preserved in the output and the other part is discarded. An empty polyline is added to the output array if the corresponding input polyline is neither cut nor extended.
You can provide arguments to the trimExtend 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 :
An array of polylines to be trimmed or extended. 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]]
]
}
]
|
| trimExtendTo |
Description :
A polyline which is used as a guide for trimming / extending input polylines. The spatial
reference of the polylines is specified by sr. The structure of each polyline is same as the
structure of the JSON polyline
objects returned by the ArcGIS REST API. Syntax and Examples: JSON Structures:Syntax:Example:
{
"paths" : [
[[-117,34],[-116,34],[-117,33]],
[[-115,44],[-114,43],[-115,43]]
]
}
|
| 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. |
| extendHow (optional) |
Description: A flag which is used along with the trimExtend operation. 0 - By default, extension considers both ends of paths. The old ends remain and new points are added to the extended ends. The new points have attributes that are extrapolated
from adjacent existing segments. 1 - If an extension is performed at an end, relocate the end point to the new position instead of leaving the old point and adding a new point at the new position.2 - If an extension is performed at an end, do not extrapolate the end-segment's attributes for the new point. Instead, make its attributes the same as the current end. Incompatible with esriNoAttributes.4 - If an extension is performed at an end, do not extrapolate the end-segment's attributes for the new point. Instead, make its attributes be empty. Incompatible with esriKeepAttributes.8 - Do not extend the 'from' end of any path.16 - Do not extend the 'to' end of any path. |
Example 1: In this example, two input polyline segments are trimmed / extended.
http://sampleserver3.arcgisonline.com/arcgis/rest/services/Geometry/GeometryServer/trimExtend?
{
"geometryType" : "<esriGeometryPolyline>",
"geometries" : [ <geometry1>, <geometry2> ]
}
{
"geometries" :
[
{
"paths" :
[
[
[6805514.21365289, 1843607.51942632],
[6805512.65853788, 1843725.78460972],
[6805496.3885573, 1844963.01999615]
]
]
},
{
"paths" :
[
[
[6805532.38225172, 1842246.56250256],
[6805523.80680956, 1842901.2062064],
[6805514.55420339, 1843607.53812706]
]
]
}
]
}