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Die Karte der Flussgebiete Mitteleuropas erstelle ich nunmehr seit 13 Jahren aus OpenStreetMap Daten. In dieser Zeit gab es viele kleinere und größere Verbesserungen an der Software und an der Datenbasis.









I often need to create a single GPX file from multiple related but different GPX files from Garmin and Wikiloc. My use case is finding route recommendations for running based on GPX files.





JDM Imports – A blog titled JDM Imports focusing on car reviews, tips, and general information about Japanese Domestic Market vehicles.








SORTA operates MetroNow, a microtransit service covering four zones in Hamilton County: Blue Ash/Montgomery, Springdale/Sharonville, Northgate/Mt. Healthy, and Forest Park/Pleasant Run.







After I got some experience with hosting OpenStreetMap tiles during the revival of Openptmap, I wanted to dig deeper into the topic in order to firstly migrate Openptmap to the new flex output so that it can receive incremental updates, and secondly …






Where is MEG – Bienvenidos a mi blog de viajes. Encontrarás opinión, reseñas de restaurantes, cafés, panoramas, copas y, espero, muchas razones para salir a la calle, salir de tu ciudad y curiosear la vida con sabor. Soy peatón, ciclista y la curiosidad es mi timón.


I was looking for a house and decided to use OSM to help me find the optimal location. I had several fixed conditions: I knew my office location and I was looking for a condo close to a primary school. I used OSM to extract all schools and residential buildings. As there were many residential buildings, I used DBSCAN to find clusters and pick one representative building per cluster. To reduce the number of routes to compute, I used the OSRM table service to filter schools and houses within 5 km of each other. Then I ran the OSRM route service on triplets of (home, school, office). I saved the route polylines and locations into a CSV file, then created a KML file based on it and imported it into Google My Maps for visualizing the results. The resulting map is useful for getting a first impression of possible places to live. I am getting quite a few schools and houses to choose from, but I still find it valuable to have a view of the entire city that does not depend on what I happened to find first.