OpenStreetMap
I quite enjoy tracing suburban footpaths.
One of the things that turned me off OSM back in the beginning (a few years ago; I can't quite remember when) was its seeming focus on making maps for CARS. I don't like cars! I cycle, or walk, and don't have a driver's license; I want to contribute to maps for walkers and cyclists, not for those silly GPS things that everyone's suctioning to their windscreens these days. (Rhubarb rhubarb.)
Thankfully, I have since realised that OSM is about MAPS, not cars, and that I can contribute whatever parts of the map that I feel are useful. So, I find myself focusing on paths for pedestrians, and because I live in the 'burbs, most of those paths are a) foopaths next to residential streets, and b) paths of desire (oh, such a delightful term!) in those rare bits of non-suburb'd land.
The question is: should one trace these paths individually? I say yes, because the information cannot be captured with tags on a road. But some people say no. Hmm....
I think I'll just keep on as I am. :-)
Long live OSM!
讨论
JohnSmith 于 2010年02月11日 12:24 的评论
Yes they should be mapped independent of roads, otherwise you are either not gather as much information as you could possibly get.
Also footways don't always run parallel to a roadway.
Sam Wilson 于 2010年02月11日 12:40 的评论
Thank you for the reassurance!
42429 于 2010年02月11日 13:48 的评论
Openstreetmap is map for all, so it must include footpaths and cycleways. This map of your neighborhood showing pedestrian shortcuts is IMHO perfect:
osm.org/?lat=-32.02407&lon=115.84075&zoom=15&layers=B000FTF
Personally, I disagree that footpaths next to a road should be mapped separately if this footpath is part of the road. Have a look at this example in your neighborhood:
osm.org/?lat=-32.05965&lon=115.762051&zoom=18&layers=B000FTF
How do you get from one bus stop to the other one? Separate footpaths are rather confusing.
In Germany, we have sometimes discussed about a comprehensive solution for mapping all lanes: footpath - cycleway - parking lane - lane - bus lane - lane - parking lane - cycleway - footpath.
Meanwhile, it is easier to use the standard solution footway=both/left/right
osm.wiki/Key:footway
osm.wiki/Proposed_features/Footway
Currently, only Osmarender renders on-street-cycleways. Unfortunately, we have to wait until Mapnik programmers are willing to implement a solution for rendering on-street-footways.
Yours, FK270673
Vclaw 于 2010年02月11日 19:14 的评论
I would say if the path is immediately adjacent to the road, separated only by a kerb (eg a sidewalk / pavement), then adding the footway=both/left/right tag to the road is best.
But if the path is more separated from the road (eg with grass in between), then worth mapping it separately. As this means you can show where it actually is, and whether its parallel to the road etc, plus you can tag it with the surface / width / access.
Though if doing this make sure you map where it connects to the road, to help with routing.
Jekader 于 2010年02月11日 22:01 的评论
I agree with Vclaw. At least, that's the way I map footways.
But in any case - even if you're drawing every small footway as a separate way on OSM - I don't think it's bad. I'm just too lazy for that :D
robert 于 2010年02月13日 19:25 的评论
If you map the sidewalk next to a road, the routing will just not work. It won't know that you can cross the road at any point. As a result it will send you on some strange detour to a node that happens to be connected across a road just to get to the other side. And if the footway isn't well connected, you may find some segments totally unroutable.
And it almost always looks a mess in the rendering.
So I would say no.
Sam Wilson 于 2010年02月14日 00:43 的评论
I must say, I hadn't really thought about footway routing. Good point.
So, I shall endevour to only ''extend'' the foopath network, ensuring that footpaths are always connected to other pedestrian=yes ways and areas.
The example given by FK270673
osm.org/?lat=-32.05965&lon=115.762051&zoom=18&layers=B000FTF
(which I have recently added more footpaths to) shows a variety of footpaths right next to the road, and some set back. There are also non-predictable crossings and footpath intersections.
This really matters, doesn't it, for wheelchair navigation? I'm really not all that au fait with that whole topic of tagging; I'll keep reading. :-)
robert 于 2010年02月14日 21:53 的评论
I only add urban footways and cycleways when they actually go somewhere useful, like a footway cut-through between roads which could potentially save a pedestrian user hundreds of meters on their journey.