ee.Geometry.dissolve

Returns the union of the geometry. This leaves single geometries untouched, and unions multi geometries.
UsageReturns
Geometry.dissolve(maxError, proj)Geometry
ArgumentTypeDetails
this: geometryGeometryThe geometry to union.
maxErrorErrorMargin, default: nullThe maximum amount of error tolerated when performing any necessary reprojection.
projProjection, default: nullIf specified, the union will be performed in this projection. Otherwise it will be performed in a spherical coordinate system.

Examples

Code Editor (JavaScript)

// Define a Geometry object.
var geometry = ee.Geometry({
  'type': 'Polygon',
  'coordinates':
    [[[-122.081, 37.417],
      [-122.086, 37.421],
      [-122.084, 37.418],
      [-122.089, 37.416]]]
});

// Apply the dissolve method to the Geometry object.
var geometryDissolve = geometry.dissolve({'maxError': 1});

// Print the result to the console.
print('geometry.dissolve(...) =', geometryDissolve);

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