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line_merge

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line_merge#

line_merge(lines: GeoDataFrame, **kwargs) → GeoDataFrame[source]#

shapely.line_merge algorithm applied to a GeoDataFrame.

See the corresponding documentation for more insights about the details of this function.

Parameters:

lines (gpd.GeoDataFrame) – MultiLineString as a GeoDataFrame.

Returns:

GeoDataFrame composed of (Multi)LineStrings formed by combining the lines of the input GeoDataFrame

Return type:

gpd.GeoDataFrame

Example

>>> import geopandas as gpd
>>> from sertit import geometry
>>> lines = gpd.read("my_lines.shp")
>>> poly = gpd.read("my_poly.shp")
                                            geometry
0  POLYGON ((491460.248 5616687.073, 491460.248 5...
>>> geometry.split(poly, splitter=lines)
The lines are discontinuous and don't intersect totally the input polygon: nothing is splitted
                                            geometry
0  POLYGON ((491460.248 5616687.073, 491460.248 5...

>>> lines = geometry.line_merge(lines)
>>> geometry.split(poly, splitter=lines)
The lines are now merged into one and now intersect totally the input polygon: split is done
                                                    geometry
0  POLYGON ((491460.248 5616687.073, 491460.248 5...
0  POLYGON ((491055.017 5616255.823, 491053.998 5...
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