BDTopo® Points of activity or industrial or commercial interest in the Channel

The TOPO® BD version 2.1 contains a 3D vector description (structured into objects) of the elements of the territory and its infrastructures, of metric precision. It comes pre-symbolised in the most common proprietary formats on the market. The objects of the BDTOPO® are structured into themes: — the road network and its address — the rail network — the energy transmission network — the hydrographic network — the buildings — the vegetation trees — the orography — the administrative structure — the points of activity or interest (PAI) — the place names mentioned. The 3D production process makes it possible to provide the altimetry of the objects, as well as the height of the buildings. The relief is described in the form of numerical terrain models (NTMs). In version 2.1, all objects have a unique identifier that is stable over time.