[postgis-users] in-base raster wrong use by gdalinfo and gdal_translate

[Rémi Cura]

Hey,
I am faced with a problem I can't solve :

I have a raster obtained by using st_setvalues and several points.

The raster has 2 bands, half of the pixel being set.

Using the st_pixelaspolygons and the ST_SummaryStats I am sure that some of
the pixels of the raster are set.

Now when I use gdalinfo or gdal_translate on this in-base raster, it gives
the correct information about the raster (size, position, band type, etc),
*but the raster has no pixel set!*

I tried several combination of parameters with non luck.


postgis version :

--POSTGIS="2.1.0 r11822" GEOS="3.5.0dev-CAPI-1.9.0 r3963" PROJ="Rel. 4.8.0,
6 March 2012" GDAL="GDAL 1.10.0, released 2013/04/24" LIBXML="2.8.0" RASTER

postgres version : 9.3.3


Summary :
Raster of 50x50 pixels has 2 bands and extent of BOX(1913.5 20887.5,1914.5
20888.5)
    band 1 of pixtype 32BSI is in-db with NODATA value of -100000
    band 2 of pixtype 32BSI is in-db with NODATA value of -100000

Band 1 contains(histogram, excluding null values):
41660    41666.6666666667    32    0.039360393603936
41666.6666666667    41673.3333333333    0    0
41673.3333333333    41680    0    0
41680    41686.6666666667    656    0.806888068880689
41686.6666666667    41693.3333333333    0    0
41693.3333333333    41700    125    0.153751537515375

gdalinfo :
 gdalinfo  "PG:host=localhost port=5433 dbname='test_pointcloud'
user='postgres' password='youguess' schema='test_raster'
table='patch_to_raster'" -stats
Driver: PostGISRaster/PostGIS Raster driver
Files: none associated
Size is 50, 50
Coordinate System is:
* CORRECT*
Origin = (1913.500000000000000,20887.500000000000000)
Pixel Size = (0.020000000000000,0.020000000000000)
Corner Coordinates:
Upper Left  (    1913.500,   20887.500) (  1d21'30.09"W,  5d51'10.78"S)
Lower Left  (    1913.500,   20888.500) (  1d21'30.09"W,  5d51'10.75"S)
Upper Right (    1914.500,   20887.500) (  1d21'30.06"W,  5d51'10.78"S)
Lower Right (    1914.500,   20888.500) (  1d21'30.07"W,  5d51'10.75"S)
Center      (    1914.000,   20888.000) (  1d21'30.08"W,  5d51'10.76"S)
Band 1 Block=50x50 Type=Int32, ColorInterp=Undefined
  Minimum=0.000, Maximum=0.000, Mean=0.000, StdDev=0.000
  NoData Value=-100000
  Metadata:
    STATISTICS_MAXIMUM=0
    STATISTICS_MEAN=0
    STATISTICS_MINIMUM=0
    STATISTICS_STDDEV=0
Band 2 Block=50x50 Type=Int32, ColorInterp=Undefined
  Minimum=0.000, Maximum=0.000, Mean=0.000, StdDev=0.000
  NoData Value=-100000
  Metadata:
    STATISTICS_MAXIMUM=0
    STATISTICS_MEAN=0
    STATISTICS_MINIMUM=0
    STATISTICS_STDDEV=0
remi at RemiCura-VirtualUbuntu:/media/sf_E_RemiCura/PROJETS/PC_in_DB/Raster/exported$
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