ee.Geometry.Point.dissolve

  • dissolve() returns the union of the input geometry, primarily impacting MultiGeometries while leaving single geometries like Points unchanged.

  • It can be applied to a Geometry object with optional parameters like maxError for reprojection tolerance and proj for specifying the projection to use during the union operation.

  • When applied to a single Point, dissolve() essentially returns the original Point.

  • This method is useful for simplifying complex geometries by merging their components into a single, unified shape.

 Returns the union of the geometry. This leaves single geometries untouched, and unions multi geometries.

UsageReturns
Point.dissolve(maxError, proj)Geometry
ArgumentTypeDetails
this: geometryGeometryThe geometry to union.
maxErrorErrorMargin, default: nullThe maximum amount of error tolerated when performing any necessary reprojection.
projProjection, default: nullIf 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