layerDefinition
An object that defines the attribute schema and drawing information for a layer drawn using client-side graphics.
Referenced by: CSV Layer (CSV), Feature Layer (ArcGISFeatureLayer), Image Service Layer (ArcGISImageServiceLayer), Image Service Vector Layer (ArcGISImageServiceVectorLayer), layer, Stream Layer (ArcGISStreamLayer), Subtype Group Layer (SubtypeGroupLayer), table, Tiled Image Service Layer (ArcGISTiledImageServiceLayer), Web Feature Service Layer (WFS)
Properties
| Property | Details |
|---|---|
| allowGeometryUpdates | Boolean value indicating whether the geometry of the features in the layer can be edited. |
| capabilities | A comma separated list of supported capabilities, e.g. Query,Editing. |
| copyrightText | String value for the copyright text information for the layer. |
| currentVersion | Numeric value indicating the server version of the layer. |
| defaultVisibility | Boolean value indicating whether the layer's visibility is turned on. |
| definitionEditor | Stores interactive filters. |
| definitionExpression | SQL-based definition expression string that narrows the data to be displayed in the layer. |
| description | String value of the layer as defined in the map service. |
| displayField | A string value that summarizes the feature. |
| drawingInfo | Contains the drawing and labeling information. |
| extent | An object defining the rectangular area. Must be one of the following values:
|
| featureReduction | Feature reductions declutter the screen by hiding features that would otherwise intersect with other features on screen. |
| fieldOverrides | The layer-specific overrides of field properties. Used by SubtypeGroupLayer to modify field information for each subtype. Any field missing from this array should be hidden. |
| fields | An array of field objects containing information about the attribute fields for the feature collection or layer. |
| geometryType | A string defining the type of geometry. Possible geometry types are: esriGeometryPoint, esriGeometryMultipoint, esriGeometryPolyline, esriGeometryPolygon, and esriGeometryEnvelope. |
| globalIdField | The unique identifier for a feature or table row within a geodatabase. |
| hasAttachments | Indicates whether attachments should be loaded for the layer. |
| hasM | Boolean value indicating whether layer has M values. |
| hasStaticData | Boolean value indicating whether data changes. True if it does not. |
| hasZ | Boolean value indicating whether layer has Z values. |
| htmlPopupType | String value indicating the HTML popup type. If property is present, must be one of the following values:
|
| id | The identifier assigned to the layer. |
| isDataVersioned | Boolean value indicating whether the data is versioned. |
| maxRecordCount | Numeric value indicating tbe maximum number of records that will be returned at once for a query. |
| maxScale | Integer property used to determine the maximum scale at which the layer is displayed. |
| minScale | Integer property used to determine the minimum scale at which the layer is displayed. |
| name | Contains a unique name for the layer that can be displayed in a legend. |
| objectIdField | Indicates the name of the object ID field in the dataset. |
| overrideSymbols | Dictates whether a client can support having an end user modify symbols on individual features. |
| rangeInfos | Indicates range information |
| source | An object indicating the layerDefinition's layer source. |
| spatialReference | An object containing the WKID or WKT identifying the spatial reference of the layer's geometry. |
| supportedQueryFormats | String value indicating the output formats that are supported in a query. |
| supportsAdvancedQueries | Boolean value indicating whether the layer supports orderByFields in a query operation. |
| supportsAttachmentsByUploadId | Boolean value indicating whether the layer supports uploading attachments with the Uploads operation. This can then be used in the Add Attachment and Update Attachment operations. |
| supportsCalculate | Boolean value indicating whether the layer supports the Calculate REST operation when updating features. |
| supportsRollbackOnFailureParameter | Boolean value indicating whether the layer supports rolling back edits made on a feature layer if some of the edits fail. |
| supportsStatistics | Boolean value indicating whether feature layer query operations support statistical functions. |
| supportsValidateSql | Boolean value indicating whether the validateSQL operation is supported across a feature service layer. |
| templates | A property of the layer definition when there are no types defined; otherwise, templates are defined as properties of the types. |
| timeInfo | The time info metadata of the layer. May be set for feature layers inside a feature collection item. |
| type | Indicates whether the layerDefinition applies to a Feature Layer or a Table. If property is present, must be one of the following values:
|
| typeIdField | Contains the name of the field holding the type ID for the features. |
| types | Contains information about an attribute field. |
| visibilityField | String value indicating the attribute field that is used to control the visibility of a feature. If applicable, when rendering a feature the client should use this field to control visibility. The field's values are 0 = do not display, 1 = display. |
Example
{
"layerDefinition": {
"drawingInfo": {
"renderer": {
"rotationType": "geographic",
"rotationExpression": "[AZIMUTH]",
"visualVariables": [
{
"type": "rotationInfo",
"rotationType": "geographic",
"field": "AZIMUTH"
}
],
"type": "simple",
"label": "renderer label",
"description": "renderer description",
"symbol": {
"angle": 0,
"xoffset": 0,
"yoffset": 0,
"type": "esriPMS",
"url": "9c4163ed7e32b5b36721bd9b34190ae4",
"imageData": "...",
"contentType": "image/png",
"width": 60,
"height": 60
}
},
"labelingInfo": [
{
"labelExpression": "[AZIMUTH]",
"useCodedValues": true,
"maxScale": 0,
"minScale": 0,
"labelPlacement": "esriServerPointLabelPlacementAboveRight",
"symbol": {
"color": [
0,
0,
0,
255
],
"type": "esriTS",
"horizontalAlignment": "center",
"angle": 0,
"xoffset": 0,
"yoffset": 0,
"text": "",
"rotated": false,
"kerning": true,
"font": {
"size": 13.333333333333332,
"style": "normal",
"weight": "normal",
"family": "serif"
}
}
}
]
}
}
}
Feedback on this topic?