AI-generated Key Takeaways
-
The
perimetermethod 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 components.
-
The method can take optional arguments for maximum error tolerance during reprojection and a projection for specifying the output units.
-
The output of the
perimetermethod is a float value.
| Usage | Returns |
|---|---|
Point.
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 Point object. var point = ee . Geometry . Point ( - 122.082 , 37.42 ); // Apply the perimeter method to the Point object. var pointPerimeter = point . perimeter ({ 'maxError' : 1 }); // Print the result to the console. print ( 'point.perimeter(...) =' , pointPerimeter ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( point , { 'color' : 'black' }, 'Geometry [black]: point' );
import ee import geemap.core as geemap
Colab (Python)
# Define a Point object. point = ee . Geometry . Point ( - 122.082 , 37.42 ) # Apply the perimeter method to the Point object. point_perimeter = point . perimeter ( maxError = 1 ) # Print the result. display ( 'point.perimeter(...) =' , point_perimeter ) # 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
