L.supermap.GeoFeatureThemeLayer(name, options)

GeoFeatureThemeLayer.js, line 10

Name Type Description

name

string

The name of the thematic layer.

options

Object

The parameters object need to be set.

Name	Type	Default	Description
`id`	string		optional Theme layer ID. The theme layer ID is created by default using CommonUtil.createUniqueID("themeLayer_").
`opacity`	number	1	optional Layer opacity.
`alwaysMapCRS`	boolean	false	optional Whether the feature coordinates are consistent with the map coordinate system, and the feature defaults to the latitude and longitude coordinates.
`TFEvents`	Array		optional Thematic feature events are temporarily stored.
`nodesClipPixel`	number	2	optional Pixel distance of vacuation node.
`isHoverAble`	boolean	false	optional Whether the graphics are bright in hover.
`isMultiHover`	boolean	false	optional Whether multiple graphics are bright at the same time. It is used to highlight all the features that correspond to the same data (such as multi region).
`isClickAble`	boolean	true	optional Whether the graphics can be clicked.
`isAllowFeatureStyle`	boolean	false	optional Whether the valid attributes in the feature style are allowed to be applied to the thematic layer.
`attribution`	string	'Map Data <span>© <a href='http://support.supermap.com.cn/product/iServer.aspx' title='SuperMap iServer' target='_blank'>SuperMap iServer</a></span>'	optional Copyright information. It prohibits from using style of data (feature) for thematic features. This property can compulsively apply the valid attributes in the feature style to the thematic features. And it has a higher priority than the layer style and styleGroups, making the style of the thematic features out of the control of the thematic layer.

Fires

L.supermap.GeoFeatureThemeLayer#event:beforefeaturesadded You can give an independent style to special data (feature) in this way.

Extends

L.supermap.ThemeLayer

Events

beforefeaturesadded GeoFeatureThemeLayer.js, line 72

Fires before adding data to the thematic map layer.

Properties:

Name	Type	Description
`features`	SuperMap.ServerFeature \| L.supermap.themeFeature \| GeoJSONObject	Event object.

inherited changelayer ThemeLayer.js, line 509

Fires after the layer property changes.

Properties:

Name	Type	Description
`layer`	Object	Layer.
`property`	string	Layer properties.

inherited featuresremoved ThemeLayer.js, line 204

Triggered after the deleted feature succeeds.

Properties:

Name	Type	Description
`features`	Array.<SuperMap.Feature.Vector>	Event object.
`succeed`	boolean	To delete whether the deletion is successful, true is the deletion succeeds, false is the deletion failure.

Methods

addFeatures(features) GeoFeatureThemeLayer.js, line 65

Add data to the thematic layer. Supports type of the feature is the feature json object returned by iServer or the L.supermap.themeFeature.

Name	Type	Description
`features`	SuperMap.ServerFeature \| L.supermap.themeFeature \| GeoJSONObject	The feature to be added.

clear() GeoFeatureThemeLayer.js, line 236

Clear all the content including data(features), the thematic elements, the cache.

clearCache() GeoFeatureThemeLayer.js, line 227

Clear data in cache.

createThematicFeature(feature) GeoFeatureThemeLayer.js, line 187

Create the thematic feature(chart).

Name	Type	Description
`feature`	L.feature	The thematic feature to be created.

inherited destroyFeatures(features) ThemeLayer.js, line 136

Destroy features.

Name	Type	Description
`features`	Array.<SuperMap.Feature.Vector>	Features to be destroy.

getCacheCount(){number} GeoFeatureThemeLayer.js, line 248

Get counts of current cache.

Returns:

Type	Description
number	Return the counts of current cache.

inherited getEvents(){Object} ThemeLayer.js, line 50

Get the event of the layer.

Returns:

Type	Description
Object	Return the event supported by the layer.

inherited getFeatureBy(property, value) ThemeLayer.js, line 241

Ergodic every feature of the features array in the thematic map. If feature[property] === value, return this feature (and only return the first one).

Name	Type	Description
`property`	string	The property name of the feature.
`value`	string	The value corresponding to property.

inherited getFeatureById(featureId) ThemeLayer.js, line 261

Return the corresponding vector features by the specified id. If it does not exist, return to null.

Name	Type	Description
`featureId`	number	The id property of the vector feature.

inherited getFeatures(){Array} ThemeLayer.js, line 226

Get valid features in the current layer.

Returns:

Type	Description
Array	Return valid features in the layer.

inherited getFeaturesByAttribute(attrName, attrValue){Array} ThemeLayer.js, line 270

Retucrn an array contains all the matched features by giving a key and a value of a an attribute.

Name	Type	Description
`attrName`	string	The key name of the attribute.
`attrValue`	string	The value of the attribute.

Returns:

Type	Description
Array	Return all the matched feature arrays.

inherited getLocalXY(coordinate) ThemeLayer.js, line 407

Convert the Geographic coordinates to Pixel coordinates.

Name	Type	Description
`coordinate`	Array	The coordinate object.

getShapesByFeatureID(featureID) GeoFeatureThemeLayer.js, line 270

Get all graphics associated with the feature by FeatureID. The function will return all the graphics if no parameter pass in.

Name	Type	Description
`featureID`	number	ID of the feature.

inherited off(event, callback, context) ThemeLayer.js, line 375

Remove event listeners from the thematic features

Name	Type	Description
`event`	Event	The event listener.
`callback`	function	The callback.
`context`	string	The context,

inherited on(event, callback, context) ThemeLayer.js, line 359

Add event listeners on the thematic features.

Name	Type	Description
`event`	Event	The event listener.
`callback`	function	The callback.
`context`	string	The context.

inherited onRemove(map) ThemeLayer.js, line 68

Remove the map.

Name	Type	Description
`map`	L.Map	The map to be removed.

redraw() GeoFeatureThemeLayer.js, line 218

Redraw this layer.

redrawThematicFeatures(bounds) GeoFeatureThemeLayer.js, line 116

Redraw all the thematic elements. This function contains all the steps to draw a thematic element, including the conversion of user data to thematic elements, thinning, caching and other steps. This function is called for layer refresh when map roaming.

Name	Type	Description
`bounds`	L.bounds	The redrawn region.

removeAllFeatures() GeoFeatureThemeLayer.js, line 107

Remove all vector features in the current layer.

removeFeatures(features) GeoFeatureThemeLayer.js, line 97

Remove features from the thematic map. This function deletes all passed vector features (data). Each item in the array of features must the feature that has been added to the current layer.

Name	Type	Description
`features`	SuperMap.Feature.Vector	The feature object to be removed。

setMaxCacheCount(cacheCount) GeoFeatureThemeLayer.js, line 257

Set the maximum count of cache

Name	Type	Description
`cacheCount`	number	The maximum count of cache.

inherited setOpacity(opacity) ThemeLayer.js, line 325

Set opacity of the layer. The value is between 0 and 1.

Name	Type	Description
`opacity`	number	The opacity.

inherited toFeature(features){SuperMap.Feature.Vector} ThemeLayer.js, line 467

Convert to the iClient features, this method will be deprecated and replaced by L.supermap.ThemeLayer#toiClientFeature.

Name	Type	Description
`features`	SuperMap.ServerFeature \| L.supermap.themeFeature \| GeoJSONObject	The pending features include the `L.supermap.ThemeFeature` type and the GeoJOSN specification data type.

Deprecated

Returns:

Type	Description
SuperMap.Feature.Vector	The converted iClient features.

inherited toiClientFeature(features){Array.<SuperMap.Feature.Vector>} ThemeLayer.js, line 432

Convert to the iClient features.

Name	Type	Description
`features`	SuperMap.ServerFeature \| L.supermap.themeFeature \| GeoJSONObject	The pending features include the `L.supermap.ThemeFeature` type and the GeoJOSN specification data type.

Returns:

Type	Description
Array.<SuperMap.Feature.Vector>	The converted iClient features.

inherited update(bounds) ThemeLayer.js, line 290

Update the layer.

Name	Type	Description
`bounds`	L.bounds	Bounds of the layer.

Class: GeoFeatureThemeLayer

L.supermap.GeoFeatureThemeLayer(name, options)

Fires

Extends

Events

beforefeaturesadded

Properties:

inherited changelayer

Properties:

inherited featuresremoved

Properties:

Methods

addFeatures(features)

clear()

clearCache()

createThematicFeature(feature)

inherited destroyFeatures(features)

getCacheCount(){number}

Returns:

inherited getEvents(){Object}

Returns:

inherited getFeatureBy(property, value)

inherited getFeatureById(featureId)

inherited getFeatures(){Array}

Returns:

inherited getFeaturesByAttribute(attrName, attrValue){Array}

Returns:

inherited getLocalXY(coordinate)

getShapesByFeatureID(featureID)

inherited off(event, callback, context)

inherited on(event, callback, context)

inherited onRemove(map)

redraw()

redrawThematicFeatures(bounds)

removeAllFeatures()

removeFeatures(features)

setMaxCacheCount(cacheCount)

inherited setOpacity(opacity)

inherited toFeature(features){SuperMap.Feature.Vector}

Returns:

inherited toiClientFeature(features){Array.<SuperMap.Feature.Vector>}

Returns:

inherited update(bounds)