AI-generated Key Takeaways
-
The perimeter method returns the length of the perimeter of the polygonal parts of a geometry.
-
For multi geometries, the perimeter is the sum of the perimeters of their component parts.
-
The method accepts optional
maxErrorandprojarguments to control reprojection and the units of the result.
| Usage | Returns |
|---|---|
MultiPoint.
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)
// Define a MultiPoint object. var multiPoint = ee . Geometry . MultiPoint ([[ - 122.082 , 37.420 ], [ - 122.081 , 37.426 ]]); // Apply the perimeter method to the MultiPoint object. var multiPointPerimeter = multiPoint . perimeter ({ 'maxError' : 1 }); // Print the result to the console. print ( 'multiPoint.perimeter(...) =' , multiPointPerimeter ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( multiPoint , { 'color' : 'black' }, 'Geometry [black]: multiPoint' );
import ee import geemap.core as geemap
Colab (Python)
# Define a MultiPoint object. multipoint = ee . Geometry . MultiPoint ([[ - 122.082 , 37.420 ], [ - 122.081 , 37.426 ]]) # Apply the perimeter method to the MultiPoint object. multipoint_perimeter = multipoint . perimeter ( maxError = 1 ) # Print the result. display ( 'multipoint.perimeter(...) =' , multipoint_perimeter ) # Display relevant geometries on the map. m = geemap . Map () m . set_center ( - 122.085 , 37.422 , 15 ) m . add_layer ( multipoint , { 'color' : 'black' }, 'Geometry [black]: multipoint' ) m
