Trim/Extend

polylines

Specifies 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 the same as the structure of the JSON polyline objects returned by the ArcGIS REST API.

Syntax

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[<polyline1>, <polyline2>, ..., <polylineN>]

Example:

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[
  {
    "paths" :
    [
      [[-117,34],[-116,34],[-117,33]],
      [[-115,44],[-114,43],[-115,43]]
    ]
  },
  {
    "paths" :
    [
      [[32,17],[31,17],[30,17],[30,16]]
    ]
  }
]

trimExtendTo

Specifies a polyline that is used as a guide for trimming or extending input polylines. The spatial reference of the polylines is specified by sr. The structure of each polyline is the same as the structure of the JSON polyline objects returned by the ArcGIS REST API.

Syntax

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<polyline>

Example

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{
  "paths": [
    [[-117,34],[-116,34],[-117,33]],
    [[-115,44],[-114,43],[-115,43]]
  ]
}

sr

Specifies 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 Using a spatial reference.

extendHow (optional)

Sets a flag that is used along with the trimExtend operation.

• 0 — By default, an extension considers both ends of a path. 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 endpoint 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. It is 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 empty. It is incompatible with esriKeepAttributes.
• 8 — Do not extend the "from" end of any path.
• 16 — Do not extend the "to" end of any path.

f

The response format. The default format is html.

Values: html | json | pjson