C# Firehose. Produces training and test datasets of image pairs for Map Matcher.
This was originally written in Python, but due to the large amount of data that needs to be produced and the potential for async + parallel programing for this particular problem, this was moved to C#.
We want to transform the vector data into a format that mapserver can read fast during rendering. You can use any method you like, but flatgeobuf was found to have very good ready performance!
osmium tags-filter south-yorkshire-latest.osm.pbf a/building -o jjj.osm
ogr2ogr buildings.fgb jjj.osm