AI-generated Key Takeaways
-
The
distancemethod returns the minimum distance between two geometries. -
The method is applied to a Geometry (
left) and takes another Geometry (right), optionalmaxError,proj, andsphericalarguments. -
The result of the
distancemethod is a Float. -
The calculation can be performed spherically or elliptically, with the option to specify a projection.
-
Examples are provided in both JavaScript and Python demonstrating how to use the
distancemethod and display the geometries.
| Usage | Returns |
|---|---|
LinearRing.
distance
(right, maxError
, proj
, spherical
)
|
Float |
| Argument | Type | Details |
|---|---|---|
|
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 LinearRing object. var linearRing = ee . Geometry . LinearRing ( [[ - 122.091 , 37.420 ], [ - 122.085 , 37.422 ], [ - 122.080 , 37.430 ]]); // Define other inputs. var inputGeom = ee . Geometry . Point ( - 122.090 , 37.423 ); // Apply the distance method to the LinearRing object. var linearRingDistance = linearRing . distance ({ 'right' : inputGeom , 'maxError' : 1 }); // Print the result to the console. print ( 'linearRing.distance(...) =' , linearRingDistance ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( linearRing , { 'color' : 'black' }, 'Geometry [black]: linearRing' ); Map . addLayer ( inputGeom , { 'color' : 'blue' }, 'Parameter [blue]: inputGeom' );
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 ]] ) # Define other inputs. input_geom = ee . Geometry . Point ( - 122.090 , 37.423 ) # Apply the distance method to the LinearRing object. linearring_distance = linearring . distance ( right = input_geom , maxError = 1 ) # Print the result. display ( 'linearring.distance(...) =' , linearring_distance ) # 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 . add_layer ( input_geom , { 'color' : 'blue' }, 'Parameter [blue]: input_geom' ) m
