Roads And Domiciles SNAPPER create buildings and roads shapefiles usable for ABM Prerequisites project_area.shp containing the desired area. Can have holes ALKIS buildings shapefile in /data/ALKIS What does it do? downloads walkable roads from OSM within the project area and saves as shapefile (all line segments are separate) clips ALKIS buildings to the project area creates centroids of all buildings snaps centroids to closest points on the road network and saves as shapefile