Announcement: On
November 13, 2024, all users will need to
use a Cloud project in order to access Earth Engine. After this date, continued individual access without a Cloud project will require
an exception.
ee.Geometry.Point.dissolve
Returns the union of the geometry. This leaves single geometries untouched, and unions multi geometries.
Usage | Returns | Point.dissolve(maxError, proj) | Geometry |
Argument | Type | Details | this: geometry | Geometry | The geometry to union. |
maxError | ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |
proj | Projection, default: null | If specified, the union will be performed in this projection. Otherwise it will be performed in a spherical coordinate system. |
Examples
Code Editor (JavaScript)
// Define a Point object.
var point = ee.Geometry.Point(-122.082, 37.42);
// Apply the dissolve method to the Point object.
var pointDissolve = point.dissolve({'maxError': 1});
// Print the result to the console.
print('point.dissolve(...) =', pointDissolve);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(point,
{'color': 'black'},
'Geometry [black]: point');
Map.addLayer(pointDissolve,
{'color': 'red'},
'Result [red]: point.dissolve');
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 Point object.
point = ee.Geometry.Point(-122.082, 37.42)
# Apply the dissolve method to the Point object.
point_dissolve = point.dissolve(maxError=1)
# Print the result.
display('point.dissolve(...) =', point_dissolve)
# 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.add_layer(point_dissolve, {'color': 'red'}, 'Result [red]: point.dissolve')
m
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Last updated 2023-10-06 UTC.
[null,null,["Last updated 2023-10-06 UTC."],[[["`dissolve()` returns the union of a geometry, leaving single geometries unchanged and uniting multi-geometries."],["It is applicable to `Point`, `MultiPoint`, `LineString`, `MultiLineString`, `LinearRing`, `Polygon`, and `MultiPolygon` geometries."],["`maxError` and `proj` are optional parameters to control the precision and projection of the dissolve operation."],["For single geometries like `Point`, `dissolve()` effectively returns the original geometry."],["When applied to multi-geometries, `dissolve()` combines the individual geometries into a single, unified geometry."]]],[]]