I’m writing an Android App (using Java and OSMDroid) to fly VFR.
I rendered the maps using an own tiles server and the data from OpenStreetMaps in order to have a style very similar to the ICAO maps.
Now I’d like to add a function in my App to display a vertical profile of the route. Unfortunately I didn’t found any function to get this information.
I think, OSM does not have the elevation of a point, too, so OSMDroid cannot give me an information it does not have…
Very important: my App must work completly offline, since in the airplane I don’t have an Internet connection!
Can some suggest me a way to solve my problem? I don’t need a huge precision, but I do need a relative small file to import in the App…
I think the max elevation in a square 2x2 km (or maybe even 5x5 km) is enough.
Thank you very much for your suggestion