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

[Bborie Park]

It sounds like it might be a problem with the GDAL PostGIS Raster driver.
>From the GDAL driver page, it looks like they recommend 1.10.1...

http://trac.osgeo.org/gdal/wiki/frmts_wtkraster.html


On Fri, Mar 7, 2014 at 7:42 AM, Rémi Cura <remi.cura at gmail.com> wrote:

> 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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