ee.Geometry.Polygon.toGeoJSON

  • The toGeoJSON() method transforms Earth Engine Geometry objects into their GeoJSON representation.

  • This function specifically applies to Polygon geometries and returns a GeoJSONGeometry object.

  • You can use this method within both JavaScript and Python environments in Google Earth Engine.

  • This facilitates interoperability with other geospatial tools and libraries that utilize the GeoJSON format.

Returns a GeoJSON representation of the geometry.

UsageReturns
Polygon.toGeoJSON()GeoJSONGeometry
ArgumentTypeDetails
this: geometryGeometryThe Geometry instance.

Examples

Code Editor (JavaScript)

// Define a Polygon object.
var polygon = ee.Geometry.Polygon(
    [[[-122.092, 37.424],
      [-122.086, 37.418],
      [-122.079, 37.425],
      [-122.085, 37.423]]]);

// Apply the toGeoJSON method to the Polygon object.
var polygonToGeoJSON = polygon.toGeoJSON();

// Print the result to the console.
print('polygon.toGeoJSON(...) =', polygonToGeoJSON);

// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(polygon,
             {'color': 'black'},
             'Geometry [black]: polygon');

Python setup

See the Python Environment page for information on the Python API and using geemap for interactive development.

import ee
import geemap.core as geemap

Colab (Python)

# Define a Polygon object.
polygon = ee.Geometry.Polygon([[
    [-122.092, 37.424],
    [-122.086, 37.418],
    [-122.079, 37.425],
    [-122.085, 37.423],
]])

# Apply the toGeoJSON method to the Polygon object.
polygon_to_geojson = polygon.toGeoJSON()

# Print the result.
display('polygon.toGeoJSON(...) =', polygon_to_geojson)

# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(polygon, {'color': 'black'}, 'Geometry [black]: polygon')
m