AI-generated Key Takeaways
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Calculates the minimum distance between two geometries, returning the result as a float.
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Accepts a right geometry as input, along with optional
maxError
for reprojection andproj
for specifying the projection. -
If a projection isn't specified, calculations are performed in a spherical coordinate system with distances in meters.
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Can be applied to Point geometries, as demonstrated in the examples.
Usage | Returns |
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Point.distance(right, maxError, proj, spherical) | Float |
Argument | Type | Details |
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this: left | Geometry | The geometry used as the left operand of the operation. |
right | Geometry | The geometry used as the right operand of the operation. |
maxError | ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |
proj | Projection, default: null | The projection in which to perform the operation. If not specified, the operation will be performed in a spherical coordinate system, and linear distances will be in meters on the sphere. |
spherical | Boolean, default: false | If true, the calculation will be done on the unit sphere. If false, the calculation will be elliptical, taking earth flattening into account. Ignored if proj is specified. Default is false. |
Examples
Code Editor (JavaScript)
// Define a Point object. var point = ee.Geometry.Point(-122.082, 37.42); // Define other inputs. var inputGeom = ee.Geometry.Point(-122.090, 37.423); // Apply the distance method to the Point object. var pointDistance = point.distance({'right': inputGeom, 'maxError': 1}); // Print the result to the console. print('point.distance(...) =', pointDistance); // Display relevant geometries on the map. Map.setCenter(-122.085, 37.422, 15); Map.addLayer(point, {'color': 'black'}, 'Geometry [black]: point'); Map.addLayer(inputGeom, {'color': 'blue'}, 'Parameter [blue]: inputGeom');
import ee import geemap.core as geemap
Colab (Python)
# Define a Point object. point = ee.Geometry.Point(-122.082, 37.42) # Define other inputs. input_geom = ee.Geometry.Point(-122.090, 37.423) # Apply the distance method to the Point object. point_distance = point.distance(right=input_geom, maxError=1) # Print the result. display('point.distance(...) =', point_distance) # Display relevant geometries on the map. m = geemap.Map() m.set_center(-122.085, 37.422, 15) m.add_layer(point, {'color': 'black'}, 'Geometry [black]: point') m.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom') m