dtoolkit.geoaccessor.geoseries.duplicated_geometry#

dtoolkit.geoaccessor.geoseries.duplicated_geometry(s: GeoDataFrame, /, predicate: Literal['intersects', 'crosses', 'overlaps', 'touches', 'covered_by', 'contains_properly', 'contains', 'within', 'covers'] | None = None, keep: Literal['first', 'last', False] = 'first') → Series[source]#

Return boolean Series denoting duplicate geometries.

Parameters:

predicate{‘intersects’, ‘crosses’, ‘overlaps’, ‘touches’, ‘covered_by’, ‘contains_properly’, ‘contains’, ‘within’, ‘covers’, None}, default None

The binary predicate is used to validate whether the geometries are duplicates or not. If None, the geometries will directly compares via value relation instead of the spatial relation.

Changed in version 0.0.19: The ‘predicate’ default value is changed from ‘intersects’ to None.

keep{‘first’, ‘last’, False}, default ‘first’

first : Mark duplicates as True except for the first occurrence.
last : Mark duplicates as True except for the last occurrence.
False : Mark all duplicates as True.

Returns:

Series(bool)

See also

pandas.Series.duplicated
geopandas.sjoin
dtoolkit.geoaccessor.geoseries.duplicated_geometry
dtoolkit.geoaccessor.geodataframe.duplicated_geometry

Examples

>>> import dtoolkit.geoaccessor
>>> import geopandas as gpd

Drop duplicated geometries by value equal.

>>> from shapely import Point
>>> df = gpd.GeoDataFrame(geometry=[Point(0, 0), Point(0, 0), Point(1, 1)])
>>> df
                  geometry
0  POINT (0.00000 0.00000)
1  POINT (0.00000 0.00000)
2  POINT (1.00000 1.00000)
>>> df.duplicated_geometry()
0    False
1     True
2    False
Name: geometry, dtype: bool

Drop duplicated geometries by sptial relation.

>>> from shapely import Polygon
>>> df = gpd.GeoDataFrame(
...     geometry=[
...         Polygon([(0,0), (1,0), (1,1), (0,1)]),
...         Polygon([(1,1), (2,1), (2,2), (1,2)]),
...         Polygon([(2,2), (3,2), (3,3), (2,3)]),
...         Polygon([(2, 0), (3, 0), (3, 1)]),
...     ],
... )
>>> df
                                            geometry
0  POLYGON ((0.00000 0.00000, 1.00000 0.00000, 1....
1  POLYGON ((1.00000 1.00000, 2.00000 1.00000, 2....
2  POLYGON ((2.00000 2.00000, 3.00000 2.00000, 3....
3  POLYGON ((2.00000 0.00000, 3.00000 0.00000, 3....
>>> df.duplicated_geometry('intersects')
0    False
1     True
2     True
3    False
dtype: bool