Pranav Toggi created SEDONA-756:
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Summary: Python UDFs cannot return raster objects without lossy
workaround
Key: SEDONA-756
URL: https://issues.apache.org/jira/browse/SEDONA-756
Project: Apache Sedona
Issue Type: New Feature
Reporter: Pranav Toggi
Returning raster data from Python UDFs requires .tolist() + RS_MakeRaster,
which forces Float64 promotion, creates 262K Python float objects per 512×512
tile, and loses all raster metadata (CRS, nodata, affine transform). Added
RasterType.serialize() and InDbSedonaRaster.with_bands() so UDFs can return
rasters directly — 18-23× faster, ~6× less memory, native dtype preservation,
and full metadata survival.
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