ee.Geometry.area

  • Calculates the area of a given geometry, with the area of points and lines being 0.

  • For multi-geometries, the total area is the sum of its components' areas, including overlaps.

  • Returns the area in square meters by default or in the units of a specified projection.

  • Accepts an optional maxError parameter for reprojection tolerance and a proj parameter for specifying the output projection.

 Returns the area of the geometry. Area of points and line strings is 0 and the area of multi geometries is the sum of the areas of their components (intersecting areas are counted multiple times).

UsageReturns
Geometry.area(maxError, proj)Float
ArgumentTypeDetails
this: geometryGeometryThe geometry input.
maxErrorErrorMargin, default: nullThe maximum amount of error tolerated when performing any necessary reprojection.
projProjection, default: nullIf specified, the result will be in the units of the coordinate system of this projection. Otherwise it will be in square meters.

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

// Print the result to the console.
print('geometry.area(...) =', geometryArea);

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

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

# Apply the area method to the Geometry object.
geometry_area = geometry.area(maxError=1)

# Print the result.
display('geometry.area(...) =', geometry_area)

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