On Fri, Feb 26, 2010 at 2:51 PM, Ricardo Cezar Bonfim Rodrigues < rikardoce...@msn.com> wrote:
> Hi, > > I'm using Gdal to load dted files and get max elevations of a region, but I > have constraints concerning speed. Inspite of loading geotifs generated from > dted has reduced a lot the processing time, its still not enough to the > constraints I have. I'm loading geotiffs which represents dted L1 files, > reading its points using rasterIO and verifying the max elevation of a > rectangle area given ( lat, lon, width). > I've noticed the more expensive is the data reading, so I'm thinking about > storing the dted (or geotiff) files in a Postgis. Would it increase the > search speed? > Does anyone know the best way to store dted files in a Postgis? I thought > about storing geotiffs (generated from deted using gdal), but I dont now > exactly how it would work. I know there are spatial queries in Postgis and I > think it would be very useful in my case. > > I look forwarding to receving any tip of how to do this. > > Thanks in Advance, > > Ricardo Rodrigues > Brazil > > Hi Ricardo, If you're planning to manage raster data in PostGIS, you should know we're working in a new extension (WKT Raster). Check this: http://trac.osgeo.org/postgis/wiki/WKTRaster It's under development yet, just like the GDAL WKT Raster driver: http://trac.osgeo.org/gdal/wiki/frmts_wtkraster.html Most of the spatial queries involving rasters are under development, I say, but it may be useful for you in the future... Keep an eye. Best regards, Jorge > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev >
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