[gdal-dev] QGIS Loads Black Screen For PostGIS Out-Db Raster Data

Even Rouault even.rouault at spatialys.com
Tue Apr 25 04:55:25 PDT 2017

On mardi 25 avril 2017 12:37:43 CEST Osahon Oduware wrote:
> Hi All,
> I have an out-db raster on PostGIS which I tried to load in QGIS (v
> 2.14.12-Essen) utilizing the DB Manager to establish a connection. I could
> view the raster table, but when I try to "Add to canvas" it displays a
> black screen instead of the raster image.
> This raster file exist on the filesystem and when it is loaded directly
> into QGIS it displays the image (aerial photo). Also, when the same file is
> stored in PostGIS as a raster (IN-DB), it can be viewed in QGIS (using the
> DB Manager tool). However, when I link the same file as an OUT-DB raster in
> PostGIS (in this case only the metadata of the raster and the filepath to
> the raster file is stored), an attempt to view it in QGIS (using the DB
> Manager tool) results in a black image being displayed instead of the
> aerial photo.
> I have been told it has to do with QGIS-GDAL support for PostGIS Out-DB
> rasters. I would be glad if someone could help me resolve this.


out-db support is not implemented yet in the GDAL PostGISRaster driver.


Spatialys - Geospatial professional services
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