ee.Geometry.Rectangle.length

AI-generated Key Takeaways

• The length() method returns the length of the linear parts of a geometry, ignoring polygonal parts.

• For multi geometries, the length is the sum of the lengths of their components.

• The method can take maxError and proj arguments to control reprojection and units of the result.

• The output is a float representing the calculated length.

Returns the length of the linear parts of the geometry. Polygonal parts are ignored. The length of multi geometries is the sum of the lengths of their components.

Usage	Returns
Rectangle.length(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 Rectangle object.
var rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43);

// Apply the length method to the Rectangle object.
var rectangleLength = rectangle.length();

// Print the result to the console.
print('rectangle.length(...) =', rectangleLength);

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

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 Rectangle object.
rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43)

# Apply the length method to the Rectangle object.
rectangle_length = rectangle.length()

# Print the result.
display('rectangle.length(...) =', rectangle_length)

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