Ok, I will do it asap, thanks again,
Jean 2013/6/6 dustymugs <[email protected]> > Can you file a ticket for this? Make sure to include your example. It > looks like something is wrong in GDAL's GDALFPolygonize() function. > > -bborie > > On 06/06/2013 01:50 PM, Jean Marchal wrote: > > I am using GDAL 1.9.2, yep ST_PixelAsPolygons() works fine, > > > > Jean > > > > 2013/6/6 dustymugs <[email protected]> > > > >> What version of GDAL are you using? ST_DumpAsPolygons() uses GDAL for > >> processing. I notice that ST_PixelAsPolygons() works correctly... > >> > >> -bborie > >> > >> On 06/06/2013 01:04 PM, Jean Marchal wrote: > >>> Bborie, > >>> > >>> I used ST_Value to prove that the value for pixel with coordinates > (8,2) > >>> does exist. I did not mention it but adjacent pixels contains different > >>> values (see reproducible example). > >>> > >>> Jean > >>> > >>> 2013/6/6 Bborie Park <[email protected]> > >>> > >>>> ST_Value and ST_DumpAsPolygons do very different things. ST_Value > gets a > >>>> value for a specific pixel while ST_DumpAsPolygons() dumps values by > >>>> merging pixels with same value in an area. > >>>> > >>>> -bborie > >>>> > >>>> > >>>> On Thu, Jun 6, 2013 at 12:38 PM, Jean Marchal < > [email protected] > >>> wrote: > >>>> > >>>>> Dear List, > >>>>> > >>>>> value's number 4 in this raster come out with ST_Value: > >>>>> > >>>>> SELECT ST_Value(rast, 1, 8, 2), ST_BandnoDataValue(rast), > >>>>> ST_BandPixelType(rast) > >>>>> FROM (SELECT ' > >>>>> > >> > 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'::raster > >>>>> rast) foo > >>>>> > >>>>> but not with ST_DumpAsPolygons: > >>>>> > >>>>> SELECT (ST_DumpAsPolygons(rast)).val > >>>>> FROM (SELECT > >>>>> > >> > '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'::raster > >>>>> rast) foo > >>>>> > >>>>> Is this a bug or I am doing something wrong ? > >>>>> > >>>>> Thanks, > >>>>> > >>>>> Jean > >>>>> > >>>>> -- > >>>>> Jean Marchal > >>>>> > >>>>> Etudiant au doctorat / PHD student > >>>>> Université Laval - Pavillon Abitibi-Price > >>>>> Faculté de foresterie, de géographie et de géomatique > >>>>> 2405, rue de la Terrasse > >>>>> Québec (Québec) G1V 0A6 > >>>>> > >>>>> _______________________________________________ > >>>>> postgis-users mailing list > >>>>> [email protected] > >>>>> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users > >>>>> > >>>>> > >>>> > >>>> _______________________________________________ > >>>> postgis-users mailing list > >>>> [email protected] > >>>> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users > >>>> > >>>> > >>> > >>> > >>> > >>> > >>> _______________________________________________ > >>> postgis-users mailing list > >>> [email protected] > >>> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users > >>> > >> _______________________________________________ > >> postgis-users mailing list > >> [email protected] > >> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users > >> > > > > > > > > > > > > _______________________________________________ > > postgis-users mailing list > > [email protected] > > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users > > > _______________________________________________ > postgis-users mailing list > [email protected] > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users > -- Jean Marchal Etudiant au doctorat / PHD student Université Laval - Pavillon Abitibi-Price Faculté de foresterie, de géographie et de géomatique 2405, rue de la Terrasse Québec (Québec) G1V 0A6
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