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You can try out a dedicated tool called Batyr for this purpose (more PostGis oriented than GDAL) generic tools like ETL with spatial abilities (Talend with Spatial Extension, GeoKettle,...) that can watch your folder Inotify based tools (On Unix based OS) a command line tool like Watchdog I will not go further as @mark-c mentioned, it's more a system ...


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You can do both with the SQLite dialect http://www.gdal.org/ogr_sql_sqlite.html. SQLite dialect gives you all the possibilities of SQLite http://www.sqlite.org/lang.html and SpatiaLite http://www.gaia-gis.it/gaia-sins/spatialite-sql-latest.html. However, I am nor sure if two vertices at same location makes geometries invalid. For removing the empty ...


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You could do this using Javascript Topology Suite which will work with Node.js. Start with an empty MultiPolygon (or the first geometry in your collection) and union this with each (Multi)Polygon in your collection. You can only have one format for the whole collection, obviously, as properties are one to one with the geometry in the GeoJSON. Here are some ...


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In OGR, the elevation data gets stored in a point layer called track_points. You can do "normal" ogr2ogr operations preserving the elevation data like this: ogr2ogr -f GPX output.gpx input.gpx waypoints routes track_points However, that fails on your ST_UNION command because you requested a Multilinestring (which has no vertex elevation data by ...


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I do not believe that GDAL cares anything about the foreign key constraints and relational model. It has just made to handle one layer at a time. I would consider to copy your int4 primary keys into normal attributes and take care on the Spatialite side that they are unique over all your distinct databases. Once source data is in order you can append all ...



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