Feature input

Raster analysis tasks use feature and raster data as input. The tasks that use features as input include:

For more information on tools that takes raster data as input see raster input.

Features can be input in one of several ways:

  1. Specify a URL to a feature service layer (or a map service layer that has query as one of its capabilities) along with an optional filter.
  2. Specify a feature collection.

URL to a feature service

You can give the URL to a feature service layer or a map service layer that has query capability.

The URL syntax is:

{
"url": "<url to feature or map service layer>"

"filter": "<attribute query string to select features to process>"
}

If your layer is on a secure server, you will need to provide a token that allows the analysis service to access your layer.

In addition to supplying the URL, you can supply a filter string for an SQL WHERE clause but without the WHERE statement. For example:

{
  "url": "http://services.arcgis.com/f126c8da131543019b05e4bfab6fc6ac/arcgis/rest/services/hospitals/FeatureServer/0",
  "filter": "STATE='CA'"
}

If no filter is supplied, all features will be analyzed.

Feature collection

The other option is to send a featureCollection instead of a layer. Filters are supported with feature collections. For more information on feature collections and feature sets, see the Javascript documentation:

Following is an example of feature collection of points with an Id and Name attribute.

{
    "layerDefinition": {
        "geometryType": "esriGeometryPoint",
        "fields": [
            {
                "name": "Id",
                "type": "esriFieldTypeOID",
                "alias": "Id"
            },
            {
                "name": "Name",
                "type": "esriFieldTypeString",
                "alias": "Name"
            }
        ]
    },
    "featureSet": {
        "geometryType": "esriGeometryPoint",
        "spatialReference": {
            "wkid": 4326
        },
        "features": [
            {
                "geometry": {
                    "x": -104.44,
                    "y": 34.83
                },
                "attributes": {
                    "Id": 43,
                    "Name": "Feature 1"
                }
            },
            {
                "geometry": {
                    "x": -100.65,
                    "y": 33.69
                },
                "attributes": {
                    "Id": 67,
                    "Name": "Feature 2"
                }
            }
        ]
    },
    "filter": "Name = 'Feature 1'"
}

Related topics

10/6/2017