[postgis-users] PostGis Raster and GDAL 1.9

[Pierre Racine]

I would maybe do some tests:

1) Remove the -a_nodata "-32767" parameter. Why did you have to set it? Is the nodata set properly in PostGIS for all rows?

2) Extract one file at a time with mode=2 and then with mode=1

Pierre

> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-
> bounces at postgis.refractions.net] On Behalf Of David B?langer
> Sent: Tuesday, May 22, 2012 10:25 AM
> To: postgis-users at postgis.refractions.net
> Subject: Re: [postgis-users] PostGis Raster and GDAL 1.9
> 
> Hi Pierre,
> Yes I have a unique rid (Integer) with sequential number. I used the tool
> raster2pgsql.exe to upload the data in the database. I uploaded 2 files
> 
> 056n05_0100_deme.tif
> 056n05_0100_demw.tif
> 
> "C:\Program Files\PostgreSQL\9.1\bin\raster2pgsql.exe" -I -e -Y -F -s 4269
> e:\dir\*.tif dbelange.elevationTest | "psql.exe" -U myuser -d myDB -h myhost -p
> 14070
> 
> I used this command to extract data:
> "C:\Program Files\GDAL\gdal_translate" -a_nodata "-32767" -of GTIFF
> "PG:host=myhost port=14070 dbname='myDB' user='myuser'
> password='mypassword' schema='dbelange' table='elevationTest' mode=2
> where=\"filename LIKE \'%056n05%\'\" " 056N05_testGDAL1.9.tif
> 
> Like I said it’s working very well with gdal 1.8
> 
> I can send you the 2 files If you want to try on your side.
> 
> Do you have another idea?
> 
> David
> 
> 
> > From: Pierre.Racine at sbf.ulaval.ca
> > To: postgis-users at postgis.refractions.net
> > Date: Sat, 19 May 2012 13:55:47 -0400
> > Subject: Re: [postgis-users] PostGis Raster and GDAL 1.9
> >
> > Hi David,
> >
> > Do you have a "rid" column in your table with unique values?
> >
> > Pierre
> >
> > > -----Original Message-----
> > > From: postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-
> > > bounces at postgis.refractions.net] On Behalf Of David B?langer
> > > Sent: Thursday, May 17, 2012 8:13 PM
> > > To: postgis-users at postgis.refractions.net
> > > Subject: [postgis-users] PostGis Raster and GDAL 1.9
> > >
> > > Hi,
> > > I stored DEM raster data in PostGIS 2.0 and I used gdal_translate (with
> mode=2)
> > > to extract a mosaic of tiles. When I’m using GDAL 1.8 is working but when
> I’m
> > > using GDAL 1.9 I can see the values of pixel for just one tile. For example I
> > > uploaded in the database a tile with an attribute filename=056n05_w and an
> > > other tile with an filename=056n05_e and I executed the command with
> GDAL
> > > 1.8 and GDAL 1.9:
> > >
> > > gdal_translate" -a_nodata "-32767" -of GTIFF "PG:host=myhost port=14070
> > > dbname='mybd' user='myuser' password='mypassword'
> > > schema='myschema'table='Elevation' mode=2 where=\"filename LIKE
> > > \'%056n05%\'\" " 056N05.tif
> > >
> > > With GDAL 1.8 I obtained a mosaic of 2 tiles (the result expected) but with
> GDAL
> > > 1.9, I obtained a raster with the same extent but only the values of the tile
> > > 056n05_w are present. The pixels of the tile 056n05_w have a value 0.
> > >
> > > I tried the stable version 1.9 MSVC2008 (Win32) and development version
> > > available today at http://www.gisinternals.com/sdk/
> > >
> <https://email.nrcan.gc.ca/owa/redir.aspx?C=OzXx4wlk90m3TV7W8fzG7_FxObj
> > >
> PB88I1bAwXOtZColSmDyhIvj_1yhbCVJUJ0vrnCWWTuivB9Y.&URL=http://www.g
> > > isinternals.com/sdk/> and I have still the same problem. For your
> information,
> > > I'm running GDAL on windows7 and PostGIS 2.0 is installed on a Linux server.
> I
> > > tried many version of GDAL 1.9 and I always have the same problem. The
> version
> > > 1.8 is working very well but I would like to take advantage of the
> improvements
> > > in the last version because I'm working on a project where processing time is
> > > very important.
> > >
> > > Does anybody have any idea about this problem ?
> > >
> > > Thanks
> > >
> > > David Bélanger
> >
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