Hi,

And thanks for the swift response!
My GDAL version is:
GDAL 1.11.0, released 2014/04/16.

I recompiled GDAL recently (but not PostGIS). Can that be the source of error?
However, ASCII and Tiffs with assigned NoData work…

Cheers
Stefan



From: Rémi Cura [mailto:[email protected]]
Sent: 16. mai 2014 11:24
To: Blumentrath, Stefan
Cc: GRASS developers list ([email protected]); 
[email protected]
Subject: Re: [GRASS-dev] GRASS created geotiff do not properly load into 
PostGIS (raster2pgsql)

Hey,
what is your version of gdal (type `gdalinfo --version`)
Cheers,
Rémi-C

2014-05-16 11:14 GMT+02:00 Blumentrath, Stefan 
<[email protected]<mailto:[email protected]>>:
Hi,

And sorry for posting on two lists. Just don`t know where the issue belongs to…

I tried to load a set of raster maps in Geotiff format, which I created in 
GRASS using r.external.out, into PostGIS 2.1.2dev.

In PostGIS the raster datasets only contain NoData values, while gdalinfo 
–stats produces reasonable statistics for the respective GeoTiffs.

I did some trouble shooting and found that the problem was that GRASS did not 
assign a numerical NoData value to the GeoTiff, but “nan”.

When I gdal_translate same GeoTiff with –a_nodata -9999, raster2pgsql loads the 
resulting file just fine.

Is raster2pgsql supposed to read rasters with nan as NoData values (using –N 
-9999 in raster2pgsql had no effect btw.) or should GRASS (r.external.out) 
assign a NoData value to the produced raster datasets?

Many thanks in advance,
Stefan



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