AI-generated Key Takeaways
-
The perimeter method returns the length of the perimeter of polygonal parts of a geometry.
-
For multi geometries, the perimeter is the sum of the perimeters of their components.
-
The
maxErrorargument specifies the maximum tolerated error during reprojection. -
The
projargument determines the units of the result, defaulting to meters if not specified.
| Usage | Returns |
|---|---|
Rectangle.
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 Rectangle object. var rectangle = ee . Geometry . Rectangle ( - 122.09 , 37.42 , - 122.08 , 37.43 ); // Apply the perimeter method to the Rectangle object. var rectanglePerimeter = rectangle . perimeter ({ 'maxError' : 1 }); // Print the result to the console. print ( 'rectangle.perimeter(...) =' , rectanglePerimeter ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( rectangle , { 'color' : 'black' }, 'Geometry [black]: rectangle' );
import ee import geemap.core as geemap
Colab (Python)
# Define a Rectangle object. rectangle = ee . Geometry . Rectangle ( - 122.09 , 37.42 , - 122.08 , 37.43 ) # Apply the perimeter method to the Rectangle object. rectangle_perimeter = rectangle . perimeter ( maxError = 1 ) # Print the result. display ( 'rectangle.perimeter(...) =' , rectangle_perimeter ) # Display relevant geometries on the map. m = geemap . Map () m . set_center ( - 122.085 , 37.422 , 15 ) m . add_layer ( rectangle , { 'color' : 'black' }, 'Geometry [black]: rectangle' ) m
