Generate Renderer (Feature Service)

Description

This operation is supported at 10.1 and later.

The generateRenderer operation is performed on a layer/table resource. This operation groups data using the supplied classificationDef (classification definition) and an optional where clause. The result is a renderer object. Use baseSymbol and colorRamp to define the symbols assigned to each class. If the operation is performed on a table, the result is a renderer object containing the data classes and no symbols.

You can provide arguments to the generateRenderer operation as defined in the following parameters table:

Request parameters

Parameter

Details

f

Description: The response format. The default response format is html.

Values: html | json

classificationDef

Description: The definition with which the renderer is generated.

Note: Use either the ClassBreaks or UniqueValue classification definition.

Syntax: classificationDef = classification definition

Example:

//classBreaks classification definition
classificationDef = {
  "type": "classBreaksDef",
  "classificationField": "POP2010",
  "classificationMethod": "esriClassifyNaturalBreaks",
  "breakCount": 5,
  "normalizationType": "esriNormalizeByField",
  "normalizationField": "Area"
}

//uniqueValue classification definition with symbology
classificationDef = {
  "type": "uniqueValueDef",
  "uniqueValueFields": ["Type", "AdminClass"],
  "fieldDelimiter": ",",
  "baseSymbol":
  {
    "type": "esriSLS",
    "style": "esriSLSSolid",
    "width": 2
  },
  "colorRamp":
  {
    "type": "algorithmic",
    "fromColor": [115,76,0,255],
    "toColor": [255,25,86,255],
    "algorithm": "esriHSVAlgorithm"
  }
}

where

Description: A where clause for which the data needs to be classified. Any legal SQL where clause operating on the fields in the layer/table is allowed.

Example: where = POP2000 > 350000

gdbVersion

Description: The geodatabase version from which the data will be rendered. This parameter applies only if the isDataVersioned property of the layer is true.

If this is not specified, the renderer will be generated from the published map’s version.

Syntax: gdbVersion=<version>

Example: gdbVersion=SDE.DEFAULT

Example usage

Generate Renderer using a unique value classification definition:

http://services.myserver.com/arcgis/rest/services/PoolPermits/FeatureServer/0/generateRenderer?classificationDef={"type":"uniqueValueDef","uniqueValueFields":["Has_Pool"],"fieldDelimiter": ",","baseSymbol":{"type": "esriSFS","style": "esriSLSSolid","width":2},"colorRamp":{"type":"algorithmic","fromColor":[115,76,0,255],"toColor":[255,25,86,255],"algorithm": "esriHSVAlgorithm"}}&where=&f=html

JSON response syntax (when symbol is included in classification definition)

{
 "type": "uniqueValue",
 "field1": "EVENTID",
 "field2": "",
 "field3": "",
 "fieldDelimiter": ",",
 "defaultSymbol": {
  "type": "esriSLS",
  "style": "esriSLSSolid",
  "width": 2
 },
 "defaultLabel": "",
 "uniqueValueInfos": [
  {
   "value": "",
   "label": "",
   "description": "",
   "symbol": {
    "type": "esriSLS",
    "style": "esriSLSSolid",
    "width": 2,
    "color": [
     115,77,0,255
    ]
   }
  },
  {
   "value": "Alberto",
   "label": "Alberto",
   "description": "",
   "symbol": {
    "type": "esriSLS",
    "style": "esriSLSSolid",
    "width": 2,
    "color": [
     120,122,1,255
    ]
   }
  },
  {
   "value": "Beryl",
   "label": "Beryl",
   "description": "",
   "symbol": {
    "type": "esriSLS",
    "style": "esriSLSSolid",
    "width": 2,
    "color": [
     83,133,3,255
    ]
   }
  },
  {
   "value": "Chris",
   "label": "Chris",
   "description": "",
   "symbol": {
    "type": "esriSLS",
    "style": "esriSLSSolid",
    "width": 2,
    "color": [
     39,143,4,255
    ]
   }
  },
  {
   "value": "Debby",
   "label": "Debby",
   "description": "",
   "symbol": {
    "type": "esriSLS",
    "style": "esriSLSSolid",
    "width": 2,
    "color": [
     255,25,86,255
    ]
   }
  }
]
}

9/13/2017