WMSSublayer | API Reference | ArcGIS Maps SDK for JavaScript 4.31

Represents a sublayer in a WMSLayer.

Constructors

WMSSublayer Constructor new WMSSublayer(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.

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Type	Summary	Class
String	The name of the class.	Accessor
String	Description for the WMS sublayer.	WMSSublayer
Array<(TimeDimension\|ElevationDimension\|GenericDimension)>	An array of time, elevation and other dimensions for the sublayer.	WMSSublayer
Extent	The full extent of the layer.	WMSSublayer
Number	The id for the WMS sublayer.	WMSSublayer
WMSLayer	The WMSLayer to which the sublayer belongs.	WMSSublayer
Boolean	Indicates whether the layer will be included in the legend.	WMSSublayer
String	A string url pointing to a legend image for the layer.	WMSSublayer
Number	The maximum scale (most zoomed in) at which the layer is visible in the view.	WMSSublayer
Number	The minimum scale (most zoomed out) at which the layer is visible in the view.	WMSSublayer
String	Name of the WMS sublayer.	WMSSublayer
WMSSublayer\|WMSLayer	Returns a reference to the parent WMS sublayer or layer.	WMSSublayer
Boolean	Indicates whether to display popups when features in the layer are clicked.	WMSSublayer
Boolean	Indicates if the layer can be queried, i.e.	WMSSublayer
Number []	List of spatialReferences (WKID) derived from the CRS elements of the first layer in the GetCapabilities request.	WMSSublayer
Collection<WMSSublayer>	A collection of WMSSublayers.	WMSSublayer
String	The title of the WMS sublayer used to identify it in places such as the LayerList and Legend widgets.	WMSSublayer
Boolean	Indicates if the layer is visible in the view.	WMSSublayer

Property Details

declaredClass Inherited Property declaredClass Stringreadonly Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.7 Accessor since 4.0, declaredClass added at 4.7.

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

description Property description String

Description for the WMS sublayer. This defaults to the value of the Abstract property from the WMS GetCapabilities request.

dimensions Property dimensions Array<(TimeDimension|ElevationDimension|GenericDimension)>readonly Since: ArcGIS Maps SDK for JavaScript 4.20 WMSSublayer since 4.4, dimensions added at 4.20.

An array of time, elevation and other dimensions for the sublayer. Information from a TimeDimension can be used to update View.timeExtent, WMSLayer.timeExtent, or to configure a TimeSlider widget.

A WMSLayer or WMSSublayer can only have one time dimension. The following example shows how to find the time dimension (if any) for the base layer.

const layer = new WMSLayer({
  url: "https://public-wms.met.no/verportal/verportal.map?request=GetCapabilities&service=WMS&version=1.3.0"
});
await layer.load();
const precipitation = layer.allSublayers.find((sl) => sl.name === "precipitation_3h_global");
layer.sublayers = [precipitation];
const timeDimension = precipitation.dimensions.find((dimension) => dimension.name === "time");

Data can exist at specific times or time ranges. We can access this information from the extent property of the TimeDimension as either an array of discrete dates or TimeDimensionIntervals. For example, continuing from the previous example, a TimeSlider is configured using the extent from a TimeDimension.

const dates = timeDimension.extent; // This time dimension is expressed as an array of dates.
const start = dates[0]; // Get the first and earliest date
const end = dates[dates.length -1]; // Get last date
const timeSlider = new TimeSlider({
  container: "timeSliderDiv",
  view: view,
  mode: "instant",
  timeVisible: true,
  loop: true,
  fullTimeExtent: { // The TimeSlider UI will span all dates
    start,
    end
  },
  stops: {
    dates // The TimeSlider thumb will snap exactly to each valid date
  }
})

fullExtent Property fullExtent Extent

The full extent of the layer.

id Property id Number

The id for the WMS sublayer.

layer Property layer WMSLayer

The WMSLayer to which the sublayer belongs.

legendEnabled Property legendEnabled Boolean

Indicates whether the layer will be included in the legend. When false, the layer will be excluded from the legend.

Default Value:true

legendUrl Property legendUrl String

A string url pointing to a legend image for the layer.

maxScale Property maxScale Number Since: ArcGIS Maps SDK for JavaScript 4.14 WMSSublayer since 4.4, maxScale added at 4.14.

The maximum scale (most zoomed in) at which the layer is visible in the view. If the map is zoomed in beyond this scale, the layer will not be visible. A value of zero means the layer does not have a maximum scale.

Default Value:0

minScale Property minScale Number Since: ArcGIS Maps SDK for JavaScript 4.14 WMSSublayer since 4.4, minScale added at 4.14.

The minimum scale (most zoomed out) at which the layer is visible in the view. If the map is zoomed out beyond this scale, the layer will not be visible. A value of zero means the layer does not have a minimum scale.

Default Value:0

name Property name String

Name of the WMS sublayer. This defaults to the value of the Name property from the WMS GetCapabilities request.

parent Property parent WMSSublayer |WMSLayer Since: ArcGIS Maps SDK for JavaScript 4.17 WMSSublayer since 4.4, parent added at 4.17.

Returns a reference to the parent WMS sublayer or layer.

Example

// Display the title and description for the WMS sublayer named "RADAR_1KM_RDBR".
const wmsLayer = new WMSLayer({
  url: "https://geo.weather.gc.ca/geomet"
});
wmsLayer.load().then(() => {
  const subLayer = layer.findSublayerByName("RADAR_1KM_RDBR");
  let parent = wmsSubLayer.parent;
  while(parent) {
    parent.visible = true;
    parent = parent.parent;
  }
});

popupEnabled Property popupEnabled Boolean

Indicates whether to display popups when features in the layer are clicked.

Default Value:false

queryable Property queryable Boolean

Indicates if the layer can be queried, i.e. the service supports GetFeatureInfo with either text/html or text/plain formats.

Default Value:false

spatialReferences Property spatialReferences Number[]

List of spatialReferences (WKID) derived from the CRS elements of the first layer in the GetCapabilities request.

sublayers Property sublayers Collection<WMSSublayer>

A collection of WMSSublayers.

title Property title String

The title of the WMS sublayer used to identify it in places such as the LayerList and Legend widgets. This defaults to the value of the Title property from the WMS GetCapabilities request.

visible Property visible Boolean

Indicates if the layer is visible in the view.

Method Overview

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Return Type	Summary	Class
	Adds one or more handles which are to be tied to the lifecycle of the object.	Accessor
WMSSublayer	Creates a deep clone of the WMS sublayer.	WMSSublayer
Boolean	Returns true if a named group of handles exist.	Accessor
	Removes a group of handles owned by the object.	Accessor

Method Details

addHandles Inherited Method addHandles(handleOrHandles, groupKey) Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, addHandles added at 4.25.

Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.

// Manually manage handles
const handle = reactiveUtils.when(
  () => !view.updating,
  () => {
    wkidSelect.disabled = false;
  },
  { once: true }
);

this.addHandles(handle);

// Destroy the object
this.destroy();

Parameters

handleOrHandles WatchHandle|WatchHandle []

Handles marked for removal once the object is destroyed.

groupKey *

optional

Key identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.

clone Method clone(){WMSSublayer}

Creates a deep clone of the WMS sublayer.

Returns

Type	Description
WMSSublayer	A deep clone of the WMS sublayer instance that invoked this method.

hasHandles Inherited Method hasHandles(groupKey){Boolean} Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, hasHandles added at 4.25.

Returns true if a named group of handles exist.

Parameter

groupKey *

optional

A group key.

Returns

Type	Description
Boolean	Returns `true` if a named group of handles exist.

Example

// Remove a named group of handles if they exist.
if (obj.hasHandles("watch-view-updates")) {
  obj.removeHandles("watch-view-updates");
}

removeHandles Inherited Method removeHandles(groupKey) Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, removeHandles added at 4.25.

Removes a group of handles owned by the object.

Parameter

groupKey *

optional

A group key or an array or collection of group keys to remove.

Example

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");

Type Definitions

ElevationDimension Type Definition ElevationDimension Object

Elevation dimension information.

Property: name String

Name of dimensional axis.

The value is always "elevation".

GenericDimension Type Definition GenericDimension Object

Generic dimension information.

Property: name String

Name of dimensional axis.

TimeDimension Type Definition TimeDimension Object

Time dimension information. For example, the WMS service might be published to show hourly weather information. The TimeDimension can be used to update View.timeExtent, WMSLayer.timeExtent, or to configure a TimeSlider widget.

Properties: name String

Name of dimensional axis.

The value is always "time".

units String

Units of dimensional axis.

The value is always "ISO8601".

extent Date []|TimeDimensionInterval []

Available value(s) for the time dimension.

default Date []|TimeDimensionInterval []

Default value(s) for the time dimension. The default value will be used if the request does not include a value for the time dimension.

multipleValues Boolean

Indicates whether multiple values of the dimension may be requested.

nearestValue Boolean

Indicates whether the nearest value of the dimension will be returned in response to a request for a nearby value.

TimeDimensionInterval Type Definition TimeDimensionInterval Object

The time dimension interval.

Properties

min Date

Start of interval.

max Date

End of interval.

resolution Object

Interval duration defined by the following properties.

Specification: years Number

Number of years.

months Number

Number of months.

days Number

Number of days.

hours Number

Number of hours.

minutes Number

Number of minutes.

seconds Number

Number of seconds.