jiayuasu opened a new pull request, #2633:
URL: https://github.com/apache/sedona/pull/2633

   ## Did you read the Contributor Guide?
   
   - Yes, I have read the [Contributor 
Rules](https://sedona.apache.org/latest/community/rule/) and [Contributor 
Development Guide](https://sedona.apache.org/latest/community/develop/)
   
   ## Is this PR related to a ticket?
   
   - Yes, and the PR name follows the format `[GH-XXX] my subject`. Closes #2407
   
   ## What changes were proposed in this PR?
   
   `SedonaUtils.display_image()` hangs when passed a raw raster DataFrame 
(e.g., 1400x800) because `__convert_to_gdf_or_pdf__` attempts to 
Arrow-serialize the full GridCoverage2D object.
   
   This PR adds raster UDT detection to `display_image()`:
   - Detects raster columns via `typeName() == "rastertype"`
   - Auto-applies `RS_AsImage()` to each raster column before rendering
   - Preserves all non-raster columns in the DataFrame
   - Falls through to the existing `__convert_to_gdf_or_pdf__` + `to_html()` 
path after conversion
   
   Users can now pass a raw raster DataUsers can now pass a raw raster 
DataUsers can now pass a raw raster DataUsers  this patch tested?
   
   - Tested manually in Jupyter notebook inside the Sedona Docker container
   - Verified with raw raster DataFrame (single and multi-column)
   - Verified with pre-applied `RS_AsImage()` DataFrame (regression check)
   - Existing test `test_sedonautils.py::test_display_image` continues to pass
   
   ## Did this PR include necessary documentation updates?
   
   - Yes, I have updated the documentation. Updated 
`docs/api/sql/Raster-visualizer.md` to show both the new direct raster display 
(recommended) and the explicit `RS_AsImage` workflow.


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