Il 31/10/2014 17:54, Aaron Racicot ha scritto: > We played with something just like this last year (called projfinder): > > http://projfinder.com/ > > That is just a simple demo application that was a proof of concept. Center > the map where you think your data is from, enter in a sample X,Y from your > dataset and it tries to guess what projection your data is in. Nothing fancy > like parsing arbitrary file formats etc… just simple X,Y from your data. > > I gave a presentation on it at FOSS4G-NA 2013 (you can reference it here): > > http://reprojected.com/blog/2013/05/28/foss4g-na-2013-was-a-home-run/ > > If you are interested in the code I can point you to it. In the end it is > basically a simple web-service built around a PostGIS SQL query that does the > distance calculations to percolate up likely projections against the EPSG > database.
Thanks Aaron for this. IMHO an even better option would be to explicitly add to EPSG/proj.4 db the bounding boxes of validity for each projection: in this way, client GIS could show only valid projections for a given map area, and this would be a major usability improvement for all. All the best. -- Paolo Cavallini - www.faunalia.eu Corsi QGIS e PostGIS: http://www.faunalia.eu/training.html _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
