Geopandas and Spatial Data Support

[iki77]

Currently, LatLong logical type only supports object dtype. However, it is very common that LatLong is stored as a spatial data, which will have geometry dtype if loaded using Geopandas. The geometry dtype that represents LatLong:

• Point(x, y): Point in a 2D plane. x=longitude, y=latitude
• Point(x, y, z): Point in a 3D plane. x=longitude, y=latitude, z=elevation

Requested features:

• Utilities to convert geometry dtype to the correct format object dtype
• LatLong logical type support both object and geometry dtype
• LatLongElev logical type,which support both object and geometry dtype

[gsheni]

@iki77 thank for creating this issue. We understand the situation you mentioned, and need to do some more exploration on how we can handle geometry dtype.