I am trying to build a sat-nav application that allows the users to dynamically update the map that their application is using. So if the user updates the map with a new road then that road is considered in shortest path calculations. I have become familiar with Postgres/PostGis databases, and importing osm data into them, but so far I have been unable to figure out a way that the user can update the map and the display the updates to the user. Could anyone offer me some advice on methods to achieve this ? ?
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