New answers tagged postgis-2.0
It depends what you mean with georeferencing. There actually is the ST_Georeference function which doesn't change the raster itself, it simply defines where the raster is located in space by setting 6 offset/scale/skew coefficients. As mentioned by @JohnBarça, your raster should have the proper georeferencing metadata, but sometimes it doesnt, and that is ...
I think it's your gid Do SELECT seq, id1 AS node, id2 AS edge, cost FROM pgr_dijkstra('SELECT gid As id, source,target, ST_Length(geom2d) as cost FROM public.canada_rail_net', 1, 200, false, false);
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