I hope someone has gone through this problem and can shed some light into this problem :)
I have been trying to import a large raster into a PostGIS 2.0 database and hit a few stumbling blocks. Initially when I tried to import the raster using raster2pgsql, I would receive the following error: rt_band_set_pixel_line: Coordinates out of range After finding this page (http://trac.osgeo.org/postgis/ticket/1839) and using gdalinfo I found that the raster exceeded the maximum allowed size of 65535 x 65535. So I decided to use the out-db functionality by using the -R flag in raster2pgsql. >From the documentation: Register the raster as a filesystem (out-db) raster, Only the metadata of the raster and path location to the raster is stored in the database (not the pixels). I imported the raster using the following command: raster2pgsql /gis/Flood/ari100.tif -R | psql -U username database But when I tried a query: SELECT ST_Value(rast, ST_PointFromText('POINT(152.9632 -26.4878)')) FROM ari100 I get the following error: NOTICE: Attempting to get pixel value with out of range raster coordinates: (23975, 29491) CONTEXT: PL/pgSQL function "st_value" line 13 at RETURN However, if I use GDAL (through Python) to query the raster directly using this script (http://svn.osgeo.org/gdal/trunk/gdal/swig/python/samples/val_at_coord.py) python val_at_coord.py 152.9632 -26.4878 I can retrieve the value correctly. I decided to find the extents of the raster in the database: SELECT ST_Height(rast) As rastheight, ST_Width(rast) As rastwidth from ari100; rastheight | rastwidth 11602 | 42971 The height is completely incorrect (should be 77138). So my question is: did I do something wrong (in using raster2pgsql) or is there a limitation in using out-db rasters with PostGIS? Tangentially: another option would be for me to import the raster as tiles, but searching these (even with an index) takes more than a minute. Is there an optimal tile size I can use for quick querying? Thanks for your help _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
