Opened 6 years ago

Last modified 2 years ago

#4562 assigned enhancement

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

Reported by: pracine Owned by: jorgearevalo
Priority: normal Milestone:
Component: GDAL_Raster Version: 1.9.0
Severity: normal Keywords: postgis_raster, postgisraster, wktraster,
Cc: jorgearevalo, dzwarg

Description

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.

Change History (5)

comment:1 Changed 6 years ago by jorgearevalo

Milestone: 1.9.1
Status: newassigned

comment:2 Changed 6 years ago by Mateusz Łoskot

Keywords: postgisraster wktraster added

comment:3 Changed 5 years ago by jorgearevalo

Milestone: 1.9.12.0.0

comment:4 Changed 5 years ago by jorgearevalo

Milestone: 1.10.02.0

comment:5 Changed 2 years ago by Even Rouault

Cc: jorgearevalo dzwarg added; jorgearevalo dzwarg removed
Milestone: 2.0

Removing obsolete milestone

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