ee.Geometry.MultiLineString.cutLines

  • The cutLines method converts LineString, MultiLineString, and LinearRing geometries into a MultiLineString by segmenting them into shorter lengths.

  • Segmentation is based on specified distances provided as a list to the distances parameter.

  • The maxError parameter controls the tolerance for reprojection errors, while proj defines the projection for distance measurements and results.

  • All geometry types other than LineString, MultiLineString, and LinearRing are converted to an empty MultiLineString when cutLines is applied.

 Converts LineString, MultiLineString, and LinearRing geometries into a MultiLineString by cutting them into parts no longer than the given distance along their length. All other geometry types will be converted to an empty MultiLineString.

UsageReturns
MultiLineString.cutLines(distances, maxError, proj)Geometry
ArgumentTypeDetails
this: geometryGeometryCuts the lines of this geometry.
distancesListDistances along each LineString to cut the line into separate pieces, measured in units of the given proj, or meters if proj is unspecified.
maxErrorErrorMargin, default: nullThe maximum amount of error tolerated when performing any necessary reprojection.
projProjection, default: nullProjection of the result and distance measurements, or EPSG:4326 if unspecified.

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 cutLines method to the MultiLineString object.
var multiLineStringCutLines = multiLineString.cutLines({'distances': [10, 100], 'maxError': 1});

// Print the result to the console.
print('multiLineString.cutLines(...) =', multiLineStringCutLines);

// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(multiLineString,
             {'color': 'black'},
             'Geometry [black]: multiLineString');
Map.addLayer(multiLineStringCutLines,
             {'color': 'red'},
             'Result [red]: multiLineString.cutLines');

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 cutLines method to the MultiLineString object.
multilinestring_cut_lines = multilinestring.cutLines(
    distances=[10, 100], maxError=1
)

# Print the result.
display('multilinestring.cutLines(...) =', multilinestring_cut_lines)

# 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_cut_lines,
    {'color': 'red'},
    'Result [red]: multilinestring.cutLines',
)
m