Ciao Guido, DBManager is only for vector layers..In the version 1.8 existed a plugin for importing raster layers but wasn't update for this new version.
Regards, José Santos From: [email protected] To: [email protected] Date: Fri, 7 Mar 2014 07:51:33 +0100 Subject: [Qgis-user] PostGIS raster access in QGIS using DBManager (or wktraster) Dear QGIS users, [This was posted on QGIS developer as well, but maybe I should seek the solution here] I am using QGIS 2.2 .0 (Valmiera) and trying to load a raster query result via DBManager, using the following query: select 1 as rid, st_union(st_band(rast, '4,3,2') ) as rast from o_8_lc81970232013202lgn00_all_rds_sub, municipalities where municipalities.wkb_geometry && rast and munname = 'Veendam' (in short: Band 4,3,2 of a raster2pgsql-loaded Landsat-8 image (overview 8 version) for a "municipality" polygon (administrative commune boundary). Execute (F5) correctly returns a single row (and I can save the union result with ST_AsTIFF() to file in a script) When I try to "Load as a new layer" to visualise the result in QGIS, I get the following error message: Erroneous query: SELECT DISTINCT upper(geometrytype("rast")),st_srid("rast") FROM (select 1 as rid, st_union(st_band(rast, '4,3,2') ) as rast from o_8_lc81970232013202lgn00_all_rds_sub, gemeentegebieden where gemeentegebieden.wkb_geometry && rast and gemnaam = 'Veendam' ) AS "subQuery_0" returned 7 [ERROR: function geometrytype(raster) does not exist LINE 1: SELECT DISTINCT upper(geometrytype("rast")),st_srid("rast") ... ^ HINT: No function matches the given name and argument types. You might need to add explicit type casts. ] Apparently, my query get "wrapped" in the SELECT DISTINCT outer query above (which obviously does not work). Is this a known issue, and, if so, can it be modified, for instance by providing explicitly geometrytype and srid (and if so, how?). I also checked out the wktraster plugin, but that does not work for 2.2. Is an upgrade expected soon [or should I try writing it myself]. Thanks for all the wonderful stuff, Guido Lemoine _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
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