ee.Geometry.LinearRing.perimeter

Returns the length of the perimeter of the polygonal parts of the geometry. The perimeter of multi geometries is the sum of the perimeters of their components.

Usage	Returns
`LinearRing.perimeter(maxError, proj)`	Float

Argument	Type	Details
this: `geometry`	Geometry	The input geometry.
`maxError`	ErrorMargin, default: null	The maximum amount of error tolerated when performing any necessary reprojection.
`proj`	Projection, default: null	If specified, the result will be in the units of the coordinate system of this projection. Otherwise it will be in meters.

Examples

Code Editor (JavaScript)

// Define a LinearRing object.
var linearRing = ee.Geometry.LinearRing(
    [[-122.091, 37.420],
     [-122.085, 37.422],
     [-122.080, 37.430]]);

// Apply the perimeter method to the LinearRing object.
var linearRingPerimeter = linearRing.perimeter({'maxError': 1});

// Print the result to the console.
print('linearRing.perimeter(...) =', linearRingPerimeter);

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

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 LinearRing object.
linearring = ee.Geometry.LinearRing(
    [[-122.091, 37.420], [-122.085, 37.422], [-122.080, 37.430]]
)

# Apply the perimeter method to the LinearRing object.
linearring_perimeter = linearring.perimeter(maxError=1)

# Print the result.
display('linearring.perimeter(...) =', linearring_perimeter)

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