jiayuasu commented on PR #773:
URL: https://github.com/apache/sedona/pull/773#issuecomment-1439502825

   @umartin 
   
   Martin, thanks for this great contribution! Your insights are always helpful 
to this community! I am Ok with this major change to Sedona Raster module. I 
think this will make everything easier in Sedona raster. A few more questions:
   
   1. With this new raster implementation, is it possible that we can easily 
create similar PostGIS raster functions in Sedona? 
(https://postgis.net/docs/RT_reference.html)
   2. Is it possible that we can write GeoTiff DataFrame back to disk, e.g., 
RS_AsTiff(https://postgis.net/docs/RT_ST_AsTIFF.html)? The current Sedona 
Raster implementation can write raster back to GeoTiff: 
https://sedona.apache.org/latest-snapshot/api/sql/Raster-loader/#geotiff-dataframe-writer
   3. Is it possible that in the future PRs, we move the existing RS function 
implementation to this new Raster UDT? Or do you think we should just leave 
them as is?
   
   @kanchanchy Kanchan, downstream projects such as GeoTorchAI 
(https://github.com/DataSystemsLab/GeoTorchAI) heavily depends on Sedona raster 
funcs. What are the most important RS functions that are used by GeoTorchAI?
   
   


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