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Geopandas: Implement concave_hull #2527

@chay0112

Description

@chay0112

Use case:

  • Add support for Geoseries.concave_hull

Description:

  • Implements GeoSeries.concave_hull, which computes the concave hull for each geometry in the series. The concave hull is the smallest concave polygon that contains all points of the geometry, controlled by a ratio parameter that determines the level of concavity and an option to allow holes. For geometries with fewer than three points, the result is a LineString or Point. This method ensures each geometry in the series is replaced by its concave hull representation, matching the behavior of GeoPandas.

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