PostGIS Raster driver: Low range pixel type band should be converted to higher range one

[pracine]

Low range pixel type band should be converted to higher range one when processing a multiple band raster. For example, doing:

C:\Windows\System32>gdal_translate -oF GTiff "PG:host='localhost' dbname='test3' user='postgres' password='1postgres' ta
ble='test09_3'" c:/temp/test09_3-mode1.tif

on this table:

CREATE TABLE test09_3 AS
SELECT 1 rid, ST_AddBand(ST_AddBand(ST_MakeEmptyRaster(10, 10, 0, 0, 0.1, 0.1, 0, 0, 4269), '8BUI'::text, 1, 0), '32BSI'::text, 2, 1) rast;

results in a raster having two 8 bit bands. A clever choice would be to convert the first band to 32 bit, not the opposite. The rule should be convert everything to the pixel type having the broadest range of values.

[Even Rouault]

Removing obsolete milestone

[Even Rouault]

This ticket has been automatically closed because Trac is no longer used for GDAL bug tracking, since the project has migrated to GitHub?. If you believe this ticket is still valid, you may file it to ​https://github.com/OSGeo/gdal/issues if it is not already reported there.