ee.Geometry.LineString.perimeter

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Examples

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
`LineString.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)Colab (Python)

// Define a LineString object.
var lineString = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]]);

// Apply the perimeter method to the LineString object.
var lineStringPerimeter = lineString.perimeter({'maxError': 1});

// Print the result to the console.
print('lineString.perimeter(...) =', lineStringPerimeter);

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

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

# Define a LineString object.
linestring = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]])

# Apply the perimeter method to the LineString object.
linestring_perimeter = linestring.perimeter(maxError=1)

# Print the result.
display('linestring.perimeter(...) =', linestring_perimeter)

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