Hi! Francisco R. Santos schrieb: > First of all, I hope it's ok to contact you in English on this ist - > unfortunately, I don't speak a word of Spanish. :-) > > Some of us speak English, so it's ok.
Great. :-) > I usually live (and map) in Landshut (http://osm.org/go/0JDdLz), but > plan a holiday trip to Barcelona and Pineda De Mar in a few weeks. > > > Hope you enjoy you vacations in Spain! I'm quite sure I will! I just hope finding your way through the Renfe system locally will be easier than in the Web. :-) > Thus said, I had notable problems with the current map of Barcelona - > most subway stations are not visible which are the most valuable > landmarks for strangers like myself. > > I took a look on the data and found that for most subway stations, the > subway_entrance's are mapped (currently not rendered by Mapnik and only > quit small by Osmarender), but not the railway=halt itself. So I took > the freedom to tag some nodes of existing railway tracks with the rough > position of the station (guessing from the position of the entrances). > > Hope that's ok for you! > > I don't think it's ok to map things without been personally there, > unless you can use some satellite imagery. Hmmm, why that? I agree with you when it comes to streets etc. which you need to classify and describe in some detail. However, from a passenger's perspective, a subway network is a quite abstract thing, especially when nearly all stations are already in the map and you only need to connect them. And as I don't need to classify or describe stations with more than the name, I don't see the real advantage of being there. The exact position where the trains stop and the subway routes will be quite inaccurate. The first can be fixed within minutes by local mappers and the latter will usually be rough anyways as you won't have GPS reception in the tunnel. Aditionally, an abstraction of a train stop with a point is very inprecise in it's nature (taking into account the length of a train). And finally, I usually use Yahoo images for verifying things - however for a subway network, they won't be too helpful, I doubt. :) > For example, in Madrid, some > stations have several entrances (1, 2, 3, 4 or even more) and the > station may be near one, or in the middle of them. I don't remember how > are Barcelona's underground entrances, but I wouldn't map any without > been there. Well, the question is always what you want to achieve with a map. A map's always an abstraction of reality and thus it will never be "exact". And here, I still think that having rough information is much better than having none. Surely, I'll add a note to my commits that this is only roughly drawn, so I expect local mappers to fix it very fast... > Also, why are you using railway=halt? Many railway stations in Barcelona > (I don't know if all of them) are railway=station. Which one is halt and > which is a station should be decided in place. Sorry, I surely meant railway=station. > So I wondered whether it would make sense to start adding the rough > metro routes to OSM, using http://www.tmb.net/img/genplano.pdf as > drawing source. This will lead to a very unprecise and rough metro > network - however better then nothing, or? > > No, don't use that map, since it has copyright ("© Ferrocarril > Metropolità de Barcelona, S.A"). In this case, nothing is better than > copied. Thankfully, it turned out, that really most stations were already mapped in barcelona with the subway_entrance nodes. So the only piece of information I'll steal from this map is the fact which line stops at which stations. I really don't think this kind of information can be copyrighted at all as it's common knowledge and no creativity is involved here. -- Gernot _______________________________________________ Talk-es mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-es
