LineSymbol | References | ArcGIS Maps SDK for JavaScript

import LineSymbol from "@arcgis/core/symbols/LineSymbol.js";

Inheritance:: LineSymbol→Symbol→Accessor

Subclasses:: SimpleLineSymbol

Since: ArcGIS Maps SDK for JavaScript 4.0

Line symbols are used to draw Polyline features in a FeatureLayer in a 2D MapView.

The only subclass of LineSymbol is SimpleLineSymbol.

SimpleLineSymbol may also be used to symbolize 2D polyline features in a 3D SceneView. However, it is recommended you use LineSymbol3D instead.

See also

Properties

Any properties can be set, retrieved or listened to. See the Watch for changes topic.

Property	Type	Class
`color` inherited	`Color \| null \| undefined`	Symbol
`declaredClass` readonly inherited	`string`	Accessor
`type` readonly	`"simple-line"`
`width`	`number`

color

autocast inherited Property

Type: Color | null | undefined

Inherited from: Symbol

The color of the symbol. This can be autocast with an array of rgb(a) values, named string, hex string or an hsl(a) string, an object with r, g, b, and a properties, or a Color object.

Default value: "black"

Examples

// CSS color string
symbol.color = "dodgerblue";

// HEX string
symbol.color = "#33cc33";

// array of RGBA values
symbol.color = [51, 204, 51, 0.3];

// object with rgba properties
symbol.color = {
  r: 51,
  g: 51,
  b: 204,
  a: 0.7
};

declaredClass

readonlyinherited Property

Type: string

Inherited from: Accessor

Since: ArcGIS Maps SDK for JavaScript 4.7

The name of the class. The declared class name is formatted as esri.folder.className.

type

readonly Property

Type: "simple-line"

The symbol type.

width

autocast Property

Type: number

The width of the symbol in points. This value may be autocast with a string expressing size in points or pixels (e.g. 12px).

Default value: 0.75

Examples

// width in points
symbol.width = 4;

// width in pixels
symbol.width = "2px";

// width in points
symbol.width = "4pt";

Methods

Method	Signature	Class
`fromJSON` inherited static	`fromJSON(json: any): any`	JSONSupportMixin
`toJSON` inherited	`toJSON(): any`	JSONSupportMixin

fromJSON

inheritedstatic Method

Signature: fromJSON (json: any): any

Inherited from: JSONSupportMixin

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Parameters

Parameter	Type	Description	Required
json	`any`	A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns: any
Returns a new instance of this class.

toJSON

inherited Method

Signature: toJSON (): any

Inherited from: JSONSupportMixin

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns: any
The ArcGIS portal JSON representation of an instance of this class.