GeoJsonDataSource

//Use a billboard instead of a point.
var dataSource = new GeoJsonDataSource();
var defaultPoint = dataSource.defaulPoint;
defaultPoint.point = undefined;
var billboard = new DynamicBillboard();
billboard.image = new ConstantProperty('image.png');
defaultPoint.billboard = billboard;
dataSource.loadUrl('sample.geojson');

Members

defaultLine :DynamicObject

Gets or sets the default graphics to be applied to GeoJSON LineString and MultiLineString geometries.

defaultPoint :DynamicObject

Gets or sets the default graphics to be applied to GeoJSON Point and MultiPoint geometries.

defaultPolygon :DynamicObject

Gets or sets the default graphics to be applied to GeoJSON Polygon and MultiPolygon geometries.

<static> crsLinkHrefs :Object

An object that maps the href property of a crs link to a callback function which takes the crs properties object and returns a Promise that resolves to a function that takes a GeoJSON coordinate and transforms it into a WGS84 Earth-fixed Cartesian. Items in this object take precedence over those defined in crsLinkHrefs, assuming the link has a type specified.

<static> crsLinkTypes :Object

An object that maps the type property of a crs link to a callback function which takes the crs properties object and returns a Promise that resolves to a function that takes a GeoJSON coordinate and transforms it into a WGS84 Earth-fixed Cartesian. Items in crsLinkHrefs take precedence over this object.

<static> crsNames :Object

An object that maps the name of a crs to a callback function which takes a GeoJSON coordinate and transforms it into a WGS84 Earth-fixed Cartesian. Older versions of GeoJSON which supported the EPSG type can be added to this list as well, by specifying the complete EPSG name, for example 'EPSG:4326'.

Methods

getChangedEvent

Gets an event that will be raised when non-time-varying data changes or if the return value of getIsTimeVarying changes.

Returns:

Event The event.

getClock

Since GeoJSON is a static format, this function always returns undefined.

getDynamicObjectCollection

Gets the DynamicObjectCollection generated by this data source.

Returns:

DynamicObjectCollection The collection of objects generated by this data source.

getErrorEvent

Gets an event that will be raised if an error is encountered during processing.

Returns:

Event The event.

getIsTimeVarying

Gets a value indicating if the data varies with simulation time. If the return value of this function changes, the changed event will be raised.

Returns:

Boolean True if the data is varies with simulation time, false otherwise.

getName

Gets the name of this data source.

Returns:

String The name.

<static> prototype.load

Asynchronously loads the provided GeoJSON object, replacing any existing data.

Parameters:

Name	Type	Argument	Description
geoJson	Object		The object to be processed.
source	String	<optional>	The base URI of any relative links in the geoJson object.

Throws:

• DeveloperError : geoJson is required.
• DeveloperError : Unsupported GeoJSON object type.
• RuntimeError : crs is null.
• RuntimeError : crs.properties is undefined.
• RuntimeError : Unknown crs name.
• RuntimeError : Unable to resolve crs link.
• RuntimeError : Unknown crs type.

Returns:

Promise a promise that will resolve when the GeoJSON is loaded.

<static> prototype.loadUrl

Asynchronously loads the GeoJSON at the provided url, replacing any existing data.

Parameters:

Name	Type	Description
url	Object	The url to be processed.

Throws:

DeveloperError : url is required.

Returns:

Promise a promise that will resolve when the GeoJSON is loaded.