Hi, is there an index lying around somewhere containing a list of all marked buildings with their address, gps coordinates and surface area? Thanks asked 14 Apr '13, 10:59  melnik edited 14 Apr '13, 11:03 |
2 Answers:
The short answer is no. The data's all in a big database, but you'll need to extract the data that you're interested in and calculate e.g. the surface area. This page of the beginner's guide explains the sort of data that there is - nodes (each with a latitude and longitude), ways (connected nodes) and relations. Buildings will typically be closed ways (as on that page) or multipolygons (one or more outer areas from which one or more inner areas must be subtracted). This page explains a bit about how buildings are mapped. In order to obtain the data, you'll either want to process an XML data extract (see the links from this page) or use a querying mechanism such as Overpass to fetch it. answered 21 May '13, 17:25  SomeoneElse ♦ |
Hi Melnik, since were all contributing to a database, the answer should be yes. But I don’t expect its just waiting there for you. You should do some programming to get it. What do you mean by coordinates of a building, the centre, the surroundings ? Success making a query with the right defenitions, it ll be a hell of a job and dont forget the size of the results worldwide ! You should ask yourself if you want it all at the same time or bit by bit. And the last question is why or whats the use of it ? Greetz, welcome and happy mapping. answered 14 Apr '13, 11:19  Hendrikklaas |
