ee.Geometry.centroid

Returns a point at the center of the highest-dimension components of the geometry. Lower-dimensional components are ignored, so the centroid of a geometry containing two polygons, three lines and a point is equivalent to the centroid of a geometry containing just the two polygons.

UsageReturns
Geometry.centroid(maxError, proj)Geometry
ArgumentTypeDetails
this: geometryGeometry

Calculates the centroid of this geometry.

maxErrorErrorMargin, default: null

The maximum amount of error tolerated when performing any necessary reprojection.

projProjection, default: null

If specified, the result will be in this projection. Otherwise it will be in WGS84.

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 centroid method to the Geometry object.
var geometryCentroid = geometry.centroid({'maxError': 1});

// Print the result to the console.
print('geometry.centroid(...) =', geometryCentroid);

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