Depend on geoarrow-rust?

[kylebarron]

There are probably a few places where geoarrow-rust could be useful to Lonboard.

One is getting the total bounds of the input:

lonboard/lonboard/_geoarrow/ops/bbox.py

Lines 36 to 98 in 667dfed

	def total_bounds(field: Field, column: ChunkedArray) -> Bbox:
	"""Compute the total bounds of a geometry column"""
	extension_type_name = field.metadata[b"ARROW:extension:name"]
	if extension_type_name == EXTENSION_NAME.POINT:
	return _total_bounds_nest_0(column)
	if extension_type_name in [EXTENSION_NAME.LINESTRING, EXTENSION_NAME.MULTIPOINT]:
	return _total_bounds_nest_1(column)
	if extension_type_name in [EXTENSION_NAME.POLYGON, EXTENSION_NAME.MULTILINESTRING]:
	return _total_bounds_nest_2(column)
	if extension_type_name == EXTENSION_NAME.MULTIPOLYGON:
	return _total_bounds_nest_3(column)
	assert False
	def _coords_bbox(arr: Array) -> Bbox:
	assert DataType.is_fixed_size_list(arr.type)
	list_size = arr.type.list_size
	assert list_size is not None
	np_arr = list_flatten(arr).to_numpy().reshape(-1, list_size)
	min_vals = np.min(np_arr, axis=0)
	max_vals = np.max(np_arr, axis=0)
	return Bbox(minx=min_vals[0], miny=min_vals[1], maxx=max_vals[0], maxy=max_vals[1])
	def _total_bounds_nest_0(column: ChunkedArray) -> Bbox:
	bbox = Bbox()
	for coords in column.chunks:
	bbox.update(_coords_bbox(coords))
	return bbox
	def _total_bounds_nest_1(column: ChunkedArray) -> Bbox:
	bbox = Bbox()
	flat_array = list_flatten(column)
	for coords in flat_array:
	bbox.update(_coords_bbox(coords))
	return bbox
	def _total_bounds_nest_2(column: ChunkedArray) -> Bbox:
	bbox = Bbox()
	flat_array = list_flatten(list_flatten(column))
	for coords in flat_array:
	bbox.update(_coords_bbox(coords))
	return bbox
	def _total_bounds_nest_3(column: ChunkedArray) -> Bbox:
	bbox = Bbox()
	flat_array = list_flatten(list_flatten(list_flatten(column)))
	for coords in flat_array:
	bbox.update(_coords_bbox(coords))
	return bbox

That apparently takes two seconds with 12.5M points, which seems awfully slow: xarray-contrib/xdggs#67 (comment)

The main blocker here is that we want to ensure that geoarrow-rust is stable enough to depend on here in Lonboard.