Extract a band from a raster as an array of doubles.
Signatures
RS_BandAsArray(raster: Raster, bandIndex: Integer)
Parameters
The 1-indexed band to extract.
Return type
An array of double values representing the pixel values of the specified band.
Example
SELECT RS_BandAsArray(raster, 1) FROM raster_table
+--------------------+
| band|
+--------------------+
|[0.0, 0.0, 0.0, 0...|
+--------------------+