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30 Απρ 2014 · OSM files are actually just XML files with a relatively simple schema. The main problem here is that they usually are big, sometimes very big, so the easy way to handle XML files (load them into memory and use some kind of DOM to get to the values) is probably not the best idea.
OpenStreetMap represents physical features on the ground (e.g., roads or buildings) using tags attached to its basic data structures (its nodes, ways, and relations). Each tag describes a geographic attribute of the feature being shown by that specific node, way or relation.
5 Φεβ 2015 · I'd like to know what the difference is between place_id and osm_id. I understand osm_id is some sort of reference number + more convenient for OSM to find location v. lat / lng. If this is the case, what is place_id and why, in nominatim.openstreetmap.org, do you query by that param instead?
How OSM Works. Let’s consider how OpenStreetMap works. Thousands of users around the world continually add to and edit the map, but what goes on behind the scenes? When you or any other user makes changes using editing software such as JOSM or iD, the software communicates with a central OpenStreetMap server and notifies it of your changes.
OSM Test Data - osmcode. OpenStreetMap data to help test your software. Part of the test data available. OpenStreetMap data can be quite complex and software using the data difficult to test. This git repository contains various pieces of OSM data to be used for testing OSM software.
31 Μαΐ 2018 · When OSM file is imported all data come in one layer and the keys become columns and value becomes the values. Since all columns become keys there will be many unnecessary and un-understandable columns.
15 Ιουλ 2014 · GraphHopper (using OpenStreetMap Data) GraphHopper offers memory efficient algorithms in Java for routing on graphs. E.g. Dijkstra and A* but also optimized road routing algorithms like Contraction Hierarchies. It stands under the Apache License and is build on a large test suite. OpenStreetMap is directly supported from GraphHopper.
