ok, just to get this right.. :) , you are suggesting I keep my OSM as is (id: 900913). Load in the tif rasters as srid (4326) and then "reproject" the OSM road geometry to srid = 4326 right? So it matches the srid of my raster! I ask because you said to reproject to 900913 in your mail.
Cheers, Ed On Mon, Feb 27, 2012 at 3:53 PM, Pierre Racine <pierre.rac...@sbf.ulaval.ca>wrote: > > I checked the srids of the geometry and the rasters and they are both > now set to > > --> 900913! > > But you loaded the raster with -s 900913. Right? That does not make the > raster coordinates to be transformed. You actually corrupted your rasters. > You have to load them in their proper srid (4326) and reproject them > afterward (or reproject the geometries) to 900913. I would go with > reprojecting the geometries. > > > I was using qgis and I think I made a mistake because I think the tif > files on disk > > are using srid = 4326, while the postgis layer I added was using 900913 > for osm. > > I have never used OpenJump.. is it possible to view both my raster and > road > > geometries from postgis on to qgis? Or you recommend installing OpenJump? > > I do. It's still the best/stable tool to work both raster and vectors. You > can't display raster but you can display their extent and their > vectorization (with ST_DumpAsPolygon()) as in the tutorial. > > > Also, do I still need to do some sort of reprojection on the geometries? > Is the > > SRID of 900913 reported for my rasters...reliable information? > > Again, the loader do not reproject. It just assign the srid you tell him. > You have to reproject at some point (before or after loading, before or > while intersecting). > > Pierre > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users >
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