SimpleLineSymbol

require(["esri/symbols/SimpleLineSymbol"], function(SimpleLineSymbol) { /* code goes here */ });
Class: esri/symbols/SimpleLineSymbol
Inheritance: SimpleLineSymbol LineSymbol Symbol Accessor
Since: ArcGIS API for JavaScript 4.0

SimpleLineSymbol is used for rendering 2D polyline geometries in a 2D MapView. SimpleLineSymbol is also used for rendering outlines for marker symbols and fill symbols.

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

The image below depicts a FeatureLayer whose graphics are styled with SimpleLineSymbols.

sls-sample

See also:
Example:
// this symbol can be used to visualize polyline
// features or the outline of a fill symbol
let symbol = {
  type: "simple-line",  // autocasts as new SimpleLineSymbol()
  color: "lightblue",
  width: "2px",
  style: "short-dot"
};

Constructors

new SimpleLineSymbol(properties)
Parameter:
properties Object
optional

See the properties for a list of all the properties that may be passed into the constructor.

Property Overview

Any properties can be set, retrieved or listened to. See the Working with Properties topic.
Show inherited properties Hide inherited properties
Name Type Summary Class
String

Specifies the cap style.

more details
more detailsSimpleLineSymbol
Color

The color of the symbol.

more details
more detailsSymbol
String

The name of the class.

more details
more detailsAccessor
String

Specifies the join style.

more details
more detailsSimpleLineSymbol
LineSymbolMarker

Specifies the color, style, and placement of a symbol marker on the line.

more details
more detailsSimpleLineSymbol
Number

Maximum allowed ratio of the width of a miter join to the line width.

more details
more detailsSimpleLineSymbol
String

Specifies the line style.

more details
more detailsSimpleLineSymbol
String

The symbol type.

more details
more detailsSimpleLineSymbol
Number

The width of the symbol in points.

more details
more detailsLineSymbol

Property Details

cap String

Specifies the cap style. The cap is the end node of a polyline, or the end of a line segment that does not connect with another segment of the same polyline.

See the table below for possible values.

Possible Value Example
butt sls-cap-butt
round sls-cap-round
square sls-cap-square

Known Limitations

  • This property does not persist when applied to a symbol used in a layer saved to a web map or portal item. See the web map specification for more details about properties that persist when a SimpleLineSymbol is saved to an ArcGIS Online or Portal item.

Possible Values:"butt"|"round"|"square"

Default Value:round
Example:
symbol.cap = "square";
Autocasts from Object|Number[]|String

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 Stringreadonly inherited
Since: ArcGIS API for JavaScript 4.7

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

join String

Specifies the join style. A join refers to the joint of a polyline, or the end of a line segment that connects to another segment of the same polyline. See the table below for possible values.

Possible Value Example
bevel sls-join-bevel
miter sls-join-miter
round sls-join-round

Possible Values:"miter"|"round"|"bevel"

Default Value:round
Example:
symbol.join = "bevel";
Since: ArcGIS API for JavaScript 4.16

Specifies the color, style, and placement of a symbol marker on the line.

Known Limitations

  • This is not currently supported within a 3D SceneView.
Example:
// Places a blue diamond marker at the beginning of the line symbol
simpleLineSymbol.marker = {
   color: "blue",
   placement: "begin",
   style: "diamond"
}
miterLimit Number

Maximum allowed ratio of the width of a miter join to the line width. Miter joins can get very wide at sharp line angles; this can be visually unpleasant or interfere with cartography. In the example below, the width of the miter join is about 3.6 times the width of the line.

SimpleLineSymbol.miterLimit

A miter limit of X means that a miter join can be at most X times as wide as the line itself. Beyond that threshold, it is replaced with a bevel join. Referring to the previous example, setting the miter limit to 3.6 or greater has no effect on the generated visuals; setting the miter limit to 3.5 or smaller causes the replacement with a bevel join.

Enforcing miterLimit

Known Limitations

This property is currently not supported in 3D SceneViews.

Default Value:2
Example:
// Miter joins that would be twice as wide as the line itself are
// replaced by bevel joins.
symbol.miterLimit = 2;
style String

Specifies the line style. Possible values are listed in the table below:

Value Description
dash sls-dash
dash-dot sls-dash-dot
dot sls-dot
long-dash sls-long-dash
long-dash-dot sls-long-dash-dot
long-dash-dot-dot sls-dash-dot-dot
none The line has no symbol.
short-dash sls-short-dash
short-dash-dot sls-short-dash-dot
short-dash-dot-dot sls-short-dash-dot-dot
short-dot sls-short-dot
solid sls-solid

Known Limitations

This property is currently not supported in 3D SceneViews.

Possible Values:"dash"|"dash-dot"|"dot"|"long-dash"|"long-dash-dot"|"long-dash-dot-dot"|"none"|"short-dash"|"short-dash-dot"|"short-dash-dot-dot"|"short-dot"|"solid"

Default Value:solid
Example:
symbol.style = "short-dash-dot";
type Stringreadonly

The symbol type.

For SimpleLineSymbol the type is always "simple-line".

Autocasts from Number|String

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";

Method Overview

Show inherited methods Hide inherited methods
Name Return Type Summary Class
SimpleLineSymbol

Creates a deep clone of the symbol.

more details
more detailsSimpleLineSymbol
*

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product.

more details
more detailsSymbol
Object

Converts an instance of this class to its ArcGIS portal JSON representation.

more details
more detailsSymbol

Method Details

clone(){SimpleLineSymbol}

Creates a deep clone of the symbol.

Returns:
Type Description
SimpleLineSymbol A deep clone of the object that invoked this method.
Example:
// Creates a deep clone of the graphic's symbol
let symLyr = graphic.symbol.clone();
fromJSON(json){*}static

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.

Parameter:
json Object

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:
Type Description
* Returns a new instance of this class.
toJSON(){Object}inherited

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

Returns:
Type Description
Object The ArcGIS portal JSON representation of an instance of this class.

Your browser is no longer supported. Please upgrade your browser for the best experience. See our browser deprecation post for more details.