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ee.Geometry.BBox.centroid
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Returns a point at the center of the highest-dimension components of the geometry. Lower-dimensional components are ignored, so the centroid of a geometry containing two polygons, three lines and a point is equivalent to the centroid of a geometry containing just the two polygons.
| Usage | Returns | BBox.centroid(maxError, proj) | Geometry |
| Argument | Type | Details | this: geometry | Geometry | Calculates the centroid of this 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 this projection. Otherwise it will be in EPSG:4326. |
Examples
Code Editor (JavaScript)
// Define a BBox object.
var bBox = ee.Geometry.BBox(-122.09, 37.42, -122.08, 37.43);
// Apply the centroid method to the BBox object.
var bBoxCentroid = bBox.centroid({'maxError': 1});
// Print the result to the console.
print('bBox.centroid(...) =', bBoxCentroid);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(bBox,
{'color': 'black'},
'Geometry [black]: bBox');
Map.addLayer(bBoxCentroid,
{'color': 'red'},
'Result [red]: bBox.centroid');
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 BBox object.
bbox = ee.Geometry.BBox(-122.09, 37.42, -122.08, 37.43)
# Apply the centroid method to the BBox object.
bbox_centroid = bbox.centroid(maxError=1)
# Print the result.
display('bbox.centroid(...) =', bbox_centroid)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(bbox, {'color': 'black'}, 'Geometry [black]: bbox')
m.add_layer(bbox_centroid, {'color': 'red'}, 'Result [red]: bbox.centroid')
m
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Last updated 2024-06-05 UTC.
[null,null,["Last updated 2024-06-05 UTC."],[[["\u003cp\u003e\u003ccode\u003ecentroid()\u003c/code\u003e returns a point at the center of the highest-dimension components of a geometry, ignoring lower dimensions.\u003c/p\u003e\n"],["\u003cp\u003eIt is applicable to various geometry types, such as polygons, lines, and points, but prioritizes the highest dimension.\u003c/p\u003e\n"],["\u003cp\u003eThe function accepts optional \u003ccode\u003emaxError\u003c/code\u003e and \u003ccode\u003eproj\u003c/code\u003e parameters for controlling reprojection and output projection.\u003c/p\u003e\n"],["\u003cp\u003eThe returned geometry represents the central point of the input geometry's primary components.\u003c/p\u003e\n"]]],[],null,["# ee.Geometry.BBox.centroid\n\nReturns a point at the center of the highest-dimension components of the geometry. Lower-dimensional components are ignored, so the centroid of a geometry containing two polygons, three lines and a point is equivalent to the centroid of a geometry containing just the two polygons.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|------------------------------------------|----------|\n| BBox.centroid`(`*maxError* `, `*proj*`)` | Geometry |\n\n| Argument | Type | Details |\n|------------------|----------------------------|-----------------------------------------------------------------------------------------|\n| this: `geometry` | Geometry | Calculates the centroid of this 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 this projection. Otherwise it will be in EPSG:4326. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Define a BBox object.\nvar bBox = ee.Geometry.BBox(-122.09, 37.42, -122.08, 37.43);\n\n// Apply the centroid method to the BBox object.\nvar bBoxCentroid = bBox.centroid({'maxError': 1});\n\n// Print the result to the console.\nprint('bBox.centroid(...) =', bBoxCentroid);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(bBox,\n {'color': 'black'},\n 'Geometry [black]: bBox');\nMap.addLayer(bBoxCentroid,\n {'color': 'red'},\n 'Result [red]: bBox.centroid');\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 BBox object.\nbbox = ee.Geometry.BBox(-122.09, 37.42, -122.08, 37.43)\n\n# Apply the centroid method to the BBox object.\nbbox_centroid = bbox.centroid(maxError=1)\n\n# Print the result.\ndisplay('bbox.centroid(...) =', bbox_centroid)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(bbox, {'color': 'black'}, 'Geometry [black]: bbox')\nm.add_layer(bbox_centroid, {'color': 'red'}, 'Result [red]: bbox.centroid')\nm\n```"]]