GeoJsonDataSource

new Cesium.GeoJsonDataSource(name)

A DataSource which processes both GeoJSON and TopoJSON data. simplestyle-spec properties will also be used if they are present.
Name Type Description
name String optional The name of this data source. If undefined, a name will be taken from the name of the GeoJSON file.
Example:
var viewer = new Cesium.Viewer('cesiumContainer');
viewer.dataSources.add(Cesium.GeoJsonDataSource.load('../../SampleData/ne_10m_us_states.topojson', {
  stroke: Cesium.Color.HOTPINK,
  fill: Cesium.Color.PINK,
  strokeWidth: 3,
  markerSymbol: '?'
}));
Demo:

Members

staticCesium.GeoJsonDataSource.clampToGround : Boolean

Gets or sets default of whether to clamp to the ground.
Default Value: false

staticCesium.GeoJsonDataSource.crsLinkHrefs : Object

Gets 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.

staticCesium.GeoJsonDataSource.crsLinkTypes : Object

Gets 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.

staticCesium.GeoJsonDataSource.crsNames : Object

Gets 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'.

staticCesium.GeoJsonDataSource.fill : Color

Gets or sets default color for polygon interiors.
Default Value: Color.YELLOW

staticCesium.GeoJsonDataSource.markerColor : Color

Gets or sets the default color of the map pin created for each point.
Default Value: Color.ROYALBLUE

staticCesium.GeoJsonDataSource.markerSize : Number

Gets or sets the default size of the map pin created for each point, in pixels.
Default Value: 48

staticCesium.GeoJsonDataSource.markerSymbol : String

Gets or sets the default symbol of the map pin created for each point. This can be any valid Maki identifier, any single character, or blank if no symbol is to be used.

staticCesium.GeoJsonDataSource.stroke : Color

Gets or sets the default color of polylines and polygon outlines.
Default Value: Color.BLACK

staticCesium.GeoJsonDataSource.strokeWidth : Number

Gets or sets the default width of polylines and polygon outlines.
Default Value: 2.0

changedEvent : Event

Gets an event that will be raised when the underlying data changes.

clock : DataSourceClock

This DataSource only defines static data, therefore this property is always undefined.

clustering : EntityCluster

Gets or sets the clustering options for this data source. This object can be shared between multiple data sources.

entities : EntityCollection

Gets the collection of Entity instances.

errorEvent : Event

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

isLoading : Boolean

Gets a value indicating if the data source is currently loading data.

loadingEvent : Event

Gets an event that will be raised when the data source either starts or stops loading.

name : String

Gets a human-readable name for this instance.

show : Boolean

Gets whether or not this data source should be displayed.

Methods

staticCesium.GeoJsonDataSource.load(data, options) → Promise.<GeoJsonDataSource>

Creates a Promise to a new instance loaded with the provided GeoJSON or TopoJSON data.
Name Type Description
data String | Object A url, GeoJSON object, or TopoJSON object to be loaded.
options Object optional An object with the following properties:
Name Type Default Description
sourceUri String optional Overrides the url to use for resolving relative links.
markerSize Number GeoJsonDataSource.markerSize optional The default size of the map pin created for each point, in pixels.
markerSymbol String GeoJsonDataSource.markerSymbol optional The default symbol of the map pin created for each point.
markerColor Color GeoJsonDataSource.markerColor optional The default color of the map pin created for each point.
stroke Color GeoJsonDataSource.stroke optional The default color of polylines and polygon outlines.
strokeWidth Number GeoJsonDataSource.strokeWidth optional The default width of polylines and polygon outlines.
fill Color GeoJsonDataSource.fill optional The default color for polygon interiors.
clampToGround Boolean GeoJsonDataSource.clampToGround optional true if we want the geometry features (polygons or linestrings) clamped to the ground. If true, lines will use corridors so use Entity.corridor instead of Entity.polyline.
Returns:
A promise that will resolve when the data is loaded.

load(data, options) → Promise.<GeoJsonDataSource>

Asynchronously loads the provided GeoJSON or TopoJSON data, replacing any existing data.
Name Type Description
data String | Object A url, GeoJSON object, or TopoJSON object to be loaded.
options Object optional An object with the following properties:
Name Type Default Description
sourceUri String optional Overrides the url to use for resolving relative links.
describe GeoJsonDataSource~describe GeoJsonDataSource.defaultDescribeProperty optional A function which returns a Property object (or just a string), which converts the properties into an html description.
markerSize Number GeoJsonDataSource.markerSize optional The default size of the map pin created for each point, in pixels.
markerSymbol String GeoJsonDataSource.markerSymbol optional The default symbol of the map pin created for each point.
markerColor Color GeoJsonDataSource.markerColor optional The default color of the map pin created for each point.
stroke Color GeoJsonDataSource.stroke optional The default color of polylines and polygon outlines.
strokeWidth Number GeoJsonDataSource.strokeWidth optional The default width of polylines and polygon outlines.
fill Color GeoJsonDataSource.fill optional The default color for polygon interiors.
clampToGround Boolean GeoJsonDataSource.clampToGround optional true if we want the features clamped to the ground.
Returns:
a promise that will resolve when the GeoJSON is loaded.

Type Definitions

describe(properties, nameProperty)

This callback is displayed as part of the GeoJsonDataSource class.
Name Type Description
properties Object The properties of the feature.
nameProperty String The property key that Cesium estimates to have the name of the feature.