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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
Polygon.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.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-06-05 UTC."],[[["\u003cp\u003e\u003ccode\u003ecentroid()\u003c/code\u003e returns the center point of the highest-dimension components of a geometry, ignoring lower dimensions.\u003c/p\u003e\n"],["\u003cp\u003eIt is applicable to \u003ccode\u003ePolygon\u003c/code\u003e geometries and can be customized with \u003ccode\u003emaxError\u003c/code\u003e for reprojection tolerance and \u003ccode\u003eproj\u003c/code\u003e for output projection.\u003c/p\u003e\n"],["\u003cp\u003eThe result is a new \u003ccode\u003eGeometry\u003c/code\u003e object representing the calculated centroid.\u003c/p\u003e\n"],["\u003cp\u003eIf \u003ccode\u003eproj\u003c/code\u003e is not specified, the centroid coordinates will be in EPSG:4326.\u003c/p\u003e\n"]]],[],null,["# ee.Geometry.Polygon.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| Polygon.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 Polygon object.\nvar polygon = ee.Geometry.Polygon(\n [[[-122.092, 37.424],\n [-122.086, 37.418],\n [-122.079, 37.425],\n [-122.085, 37.423]]]);\n\n// Apply the centroid method to the Polygon object.\nvar polygonCentroid = polygon.centroid({'maxError': 1});\n\n// Print the result to the console.\nprint('polygon.centroid(...) =', polygonCentroid);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(polygon,\n {'color': 'black'},\n 'Geometry [black]: polygon');\nMap.addLayer(polygonCentroid,\n {'color': 'red'},\n 'Result [red]: polygon.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 Polygon object.\npolygon = ee.Geometry.Polygon([[\n [-122.092, 37.424],\n [-122.086, 37.418],\n [-122.079, 37.425],\n [-122.085, 37.423],\n]])\n\n# Apply the centroid method to the Polygon object.\npolygon_centroid = polygon.centroid(maxError=1)\n\n# Print the result.\ndisplay('polygon.centroid(...) =', polygon_centroid)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(polygon, {'color': 'black'}, 'Geometry [black]: polygon')\nm.add_layer(\n polygon_centroid, {'color': 'red'}, 'Result [red]: polygon.centroid'\n)\nm\n```"]]
