ee.Geometry.MultiLineString.dissolve

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

Usage	Returns
MultiLineString.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 MultiLineString object.
var multiLineString = ee.Geometry.MultiLineString(
   [[[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],
    [[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]]]);

// Apply the dissolve method to the MultiLineString object.
var multiLineStringDissolve = multiLineString.dissolve({'maxError': 1});

// Print the result to the console.
print('multiLineString.dissolve(...) =', multiLineStringDissolve);

// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(multiLineString,
             {'color': 'black'},
             'Geometry [black]: multiLineString');
Map.addLayer(multiLineStringDissolve,
             {'color': 'red'},
             'Result [red]: multiLineString.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 MultiLineString object.
multilinestring = ee.Geometry.MultiLineString([
    [[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],
    [[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]],
])

# Apply the dissolve method to the MultiLineString object.
multilinestring_dissolve = multilinestring.dissolve(maxError=1)

# Print the result.
display('multilinestring.dissolve(...) =', multilinestring_dissolve)

# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(
    multilinestring, {'color': 'black'}, 'Geometry [black]: multilinestring'
)
m.add_layer(
    multilinestring_dissolve,
    {'color': 'red'},
    'Result [red]: multilinestring.dissolve',
)
m