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ee.Geometry.Rectangle.perimeter
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Returns the length of the perimeter of the polygonal parts of the geometry. The perimeter of multi geometries is the sum of the perimeters of their components.
| 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');
Python setup
See the
Python Environment page for information on the Python API and using
geemap for interactive development.
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
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Last updated 2023-10-06 UTC.
[null,null,["Last updated 2023-10-06 UTC."],[[["\u003cp\u003e\u003ccode\u003eperimeter()\u003c/code\u003e calculates the total length of the outside edges of a geometry, like a rectangle or polygon.\u003c/p\u003e\n"],["\u003cp\u003eFor complex shapes with multiple parts, it adds up the perimeter of each individual part.\u003c/p\u003e\n"],["\u003cp\u003eYou can choose to get the perimeter in meters or in the units of a specific map projection.\u003c/p\u003e\n"],["\u003cp\u003eAn optional \u003ccode\u003emaxError\u003c/code\u003e parameter controls the accuracy of calculations, especially during projection.\u003c/p\u003e\n"]]],["The `perimeter()` method calculates the total perimeter of a geometry's polygonal parts. For multi-geometries, it sums the perimeters of individual components. It takes `maxError` (tolerated reprojection error) and `proj` (output projection units) as optional arguments. The default `proj` is meters. The method, applied to a rectangle object, returns a float representing the calculated perimeter, which can be displayed with other parameters.\n"],null,["# ee.Geometry.Rectangle.perimeter\n\nReturns the length of the perimeter of the polygonal parts of the geometry. The perimeter of multi geometries is the sum of the perimeters of their components.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|------------------------------------------------|---------|\n| Rectangle.perimeter`(`*maxError* `, `*proj*`)` | Float |\n\n| Argument | Type | Details |\n|------------------|----------------------------|----------------------------------------------------------------------------------------------------------------------------|\n| this: `geometry` | Geometry | The input geometry. |\n| `maxError` | ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |\n| `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. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Define a Rectangle object.\nvar rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43);\n\n// Apply the perimeter method to the Rectangle object.\nvar rectanglePerimeter = rectangle.perimeter({'maxError': 1});\n\n// Print the result to the console.\nprint('rectangle.perimeter(...) =', rectanglePerimeter);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(rectangle,\n {'color': 'black'},\n 'Geometry [black]: rectangle');\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\n# Define a Rectangle object.\nrectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43)\n\n# Apply the perimeter method to the Rectangle object.\nrectangle_perimeter = rectangle.perimeter(maxError=1)\n\n# Print the result.\ndisplay('rectangle.perimeter(...) =', rectangle_perimeter)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(rectangle, {'color': 'black'}, 'Geometry [black]: rectangle')\nm\n```"]]