The REST API of HBase Ganos uses the GeoJson format to describe spatio-temporal data. For more information, see GEOJSON RFC.

The following sample code shows the spatio-temporal Point data, which can be considered as a track point:

  "type": "Feature",
  "geometry": {
    "type": "Point",
    "coordinates": [125.6, 10.1]
  "properties": {
    "name": "Dinagat Islands",
	"dtg": 1536041936000,
	"id":  "1"

The data consists of three parts:

  • Time data: The data is stored as properties information in properties.dtg. In this example, the time data is a timestamp in milliseconds, which is a 13-digit integer.
  • Spatial data: The geometry.type parameter indicates that the spatial data is a Point data, and the geometry.coordinates indicates the latitude and longitude coordinates of the Point.
  • Other properties: Other properties are stored in properties, such as and, which indicate the property information of the Point.

GeoJson libraries

You can use common GeoJson libraries to generate GeoJson strings.

  • The GeoJson library geojson-jackson for Java. For more information, visit Run the following command to use the library.
FeatureCollection featureCollection = new FeatureCollection();
featureCollection.add(new Feature());

String json= new ObjectMapper().writeValueAsString(featureCollection);
  • The GeoJson library geojson-jackson for Python.

Run the following command to include the geojson package.

	pip install geojson

Run the following command to use the library.

	point_feature = Feature(id="1",geometry=Point((1.6432, -19.123)),properties={"id":"1","dtg":1536041936000,"name": "Dinagat Islands"})
	polygon_feature = Feature(id="my_feature2",geometry=Polygon([(0,0),(0,1),(1,1),(1,0),(0,0)]),properties={"id":"2","dtg":1536041936000,"name": "Dinagat Islands"})
	feature_collection = FeatureCollection([point_feature,polygon_feature])