ee.Geometry.LinearRing.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 |
---|
LinearRing.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
// Define a LinearRing object.
var linearRing = ee.Geometry.LinearRing(
[[-122.091, 37.420],
[-122.085, 37.422],
[-122.080, 37.430]]);
// Apply the length method to the LinearRing object.
var linearRingLength = linearRing.length();
// Print the result to the console.
print('linearRing.length(...) =', linearRingLength);
// 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
# Define a LinearRing object.
linearring = ee.Geometry.LinearRing(
[[-122.091, 37.420], [-122.085, 37.422], [-122.080, 37.430]]
)
# Apply the length method to the LinearRing object.
linearring_length = linearring.length()
# Print the result.
display('linearring.length(...) =', linearring_length)
# 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
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Last updated 2023-10-06 UTC.
[null,null,["Last updated 2023-10-06 UTC."],[[["Calculates the total length of the linear segments within a geometry, excluding any polygonal areas."],["For multi-geometries, the total length is the sum of the lengths of their individual components."],["The length is returned in meters by default but can be calculated in the units of a specified projection using the `proj` argument."],["The `maxError` argument allows controlling the tolerance for error during reprojection if necessary."]]],["The `length` method calculates the length of linear parts within a geometry, excluding polygonal sections. For multi-geometries, it sums the lengths of individual components. The method accepts an optional `maxError` argument to specify reprojection tolerance and a `proj` argument to define the output coordinate system. Without `proj`, the result is in meters. The method is demonstrated in both JavaScript and Python examples using `LinearRing` objects.\n"]]