kylebarron commented on issue #12644: URL: https://github.com/apache/datafusion/issues/12644#issuecomment-2379306495
I'm not very knowledgeable about DataFusion internals or database theory, so it's hard for me to provide feedback on the proposal, but I'm very excited about the prospect of extension types to enable spatial types (https://github.com/apache/datafusion/issues/7859). I've been collaborating on the [GeoArrow](https://geoarrow.org/) spec, which defines Arrow extension types for spatial data. It's important to have additional logical types because the same physical layout can be interpreted in multiple logical ways (e.g. an array of `LineString` and `MultiPoint`), and to store [coordinate reference system](https://en.wikipedia.org/wiki/Spatial_reference_system) information (what physical locations on earth these numbers represent) as part of the type. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
