ENH: expose all shapely functions as GeoSeries/GeometryArray methods

pygeos now contains some functions which could be exposed as methods on GeoSeries/GeometryArray levels. Some of them have shapely (1.7) versions, most do not.

I would not mind supporting them only if pygeos is installed and mark them as experimental until shapely 2.0 is out. The implementation of these should be relatively easy and straightforward then.

Probably incomplete list of candidates:

Measurement:

• frechet_distance
• hausdorff_distance
• minimum_bounding_radius
• minimum_clearance

Predicates:

• contains_properly
• is_ccw
• is_closed
• is_prepared
• is_valid_reason

Set operations:

• coverage_union
• coverage_union_all
• intersection_all
• symmetric_difference_all

Constructive:

• build_area
• clip_by_rect (#1928)
• delaunay_triangles
• extract_unique_points
• make_valid (#2539)
• minimum_bounding_circle (#2621)
• minimum_rotated_rectangle (#2541)
• normalize
• offset_curve
• polygonize
• polygonize_full
• reverse
• segmentize
• snap
• voronoi_polygons

Linestring operations:

• line_interpolate_point
• line_locate_point
• line_merge
• shared_paths
• shortest_line

Coordinate ops:

• count_coordinates
• get_coordinates

Geometry properties:

• force_2d
• force_3d

And potentially also creation ops. We now expose points via points_from_xy.

• box
• destroy_prepared
• ~empty~
• ~geometrycollections~
• ~linearrings~
• ~linestrings~
• ~multilinestrings~
• ~multipoints~
• ~multipolygons~
• points
• ~polygons~
• prepare

[martinfleis]

Do you still think this estimate is accurate?

No, given the number and variety of shapely functions not exposed, it will be significantly longer with proper tests and documentation. Some are easy but a lot is not and we’ll need to figure out how to seamlessly implement them here.

We’re usually doing GSoC under the NumFOCUS umbrella so there’s a bit more time for us.

[EwoutH]

Probably not, the small-size GSoC project is 175 hours. Implementing all listed above will be a matter of <10 hours.

Do you still think this estimate is accurate?

It would be very nice to have all those functions exposed, and if this could be a potential GSoC project, the time to start thinking about that is around now.