Re: [OSM-talk] All you've ever wanted to know about the french cadastre
On 27 sep 2012, at 15:14, Lester Caine wrote: > THEVENON Julien wrote: >> >> * *Many of the buildings moving away from the one identified simply do >> not >> even fit the footprint on the bing imagery ? >> What make you so sure that the thruth is in imagery and not in cadastre ? >> particulary considering that Bing is often several year late and that offical >> french maps (IGN) are also relying on cadastre for building ? >> There are a lot of examples of places where there are some buiding >> referenced in >> cadastre that do not appear in Bing but that you can see IRL. >> You will decide to remove them because you they are not on Bing or you will >> trust local contributors that introduce them because they know they are real >> ? >> how do you make the difference between the guy that has the knowledge and the >> one that has not ? > Not having access to the cadastre layer I can't comment on the differences > between what has been traced and the source data, but I can SEE a distinct > positional difference between the bing layer and the OSM buildings. If there > was a general offset, then I would accept that there was simply a referencing > error, but the buildings were offset in different directions across the areas > I looked at. I also have buildings that do not yet appear on Bing ... no > problem with that, but the ones that appear on both SHOULD be in the same > place? You have already said that the cadastre data can't be trusted for > detail? > A lot of times Bing imagery is distorted in different directions in a small area. Quite easy to see in some places where you have access to very precise ortho imagery or vector data to compare with. For example in Lund where we get ortho imagery from the municpality; Here the Bing layer is distorted in different directions just a few blocks apart… not to mention that the Bing imagery is quite a few years older. Same with some vector data that muncipalities in the region have provided to OSM where it is easy to see that Bing imagery is quite inaccurate. /Joakim ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Mapping Chicago's pedways
On 27 sep 2012, at 05:26, David Turner wrote: > Chicago's pedway system on OSM is a bit wrong -- it's mostly > disconnected from the rest of the map (check out KeepRight for a bunch > of orange lightning bolts). This can cause problems for routers. > Apparently, Toronto's system has the same issue. > > (I should also note that Chicago doesn't have hour_on and hour_off, but > that's a different issue). > > I would like to just connect the pedways to the streets that they > intersect, but that's not physically accurate; in fact, they're through > buildings (and often down stairs or elevators). Can anyone suggest a > better way to map them so that they're accurate yet routable? > I'd draw an approximation of the stairs inside the buildings connecting one end of the stair to the pedway and extending the other end with a footway connecting to a sidewalk/highway. Perhaps also adding some building=entrance nodes where the connecting footway (not the "pedway") intersects building polys. > I'm not local to Chicago, so it would be tough for me to go out and > directly investigate myself. But I've CC'd a colleague who does live in > Chicago and whom I might be able to pester to help out when he gets the > free time. > > > > > ___ > talk mailing list > talk@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Bad (wrong?) OSM publicity?
You can use the iOS simulator from Xcode if you have a Mac… or at least Mac OS X. ;) /Joakim On 25 sep 2012, at 14:41, Janko Mihelić wrote: > Is there a way to see Apple maps if you don't have an iphone? > > Janko > ___ > talk mailing list > talk@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] OpenBuildingModels repository
On 3 aug 2012, at 11:19, Matthias wrote: > Hi all, > > a first prototype of the OpenBuildingModels platform is finally online. > OpenBuildingModels aims to be a free-to-use online repository for > architectural 3D building models. These models can be referenced in > OpenStreetMap and are also displayed in the OSM-3D globe. However, the models > can just as well be freely used for any other purpose (ODbL license). > > Try it out yourself at http://openbuildingmodels.uni-hd.de Any plans on replacing the current Windows only model viewer with a HTML5/Canvas/ 3D viewer? > > More information can be found in the Wiki: > http://wiki.openstreetmap.org/wiki/OpenBuildingModels > > Please note that the platform is still in Beta stage. Any kind of feedback is > welcome! > > Best regards, > Matthias Uden > (bvbmatze) > > (Chair of GIScience, University of Heidelberg, Germany) > > ___ > talk mailing list > talk@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Naming disputes in Ukraine
On 25 jul 2012, at 21:59, Florian Lohoff wrote: > Hi, > > On Wed, Jul 25, 2012 at 09:33:43AM +0200, Frederik Ramm wrote: >> Hi, >> >> I'd like to hear the opinion of others in OpenStreetMap about the >> following situation that Data Working Group has been asked to >> mediate. >> >> The official language in Ukraine is Ukrainian. To the untrained eye >> there's not much of a difference to Russian but of course the devil >> is in the detail, here's a street name example: >> >> name:ru = Фурманова улица >> name:uk = Фурманова вулиця > > How has this been solved in Finland? They have a Swedish minority > which is a majority in some places in which case (i heard) the Swedish > signs are at the top, otherwise Finnish ist at the top. > If the area is "swedish" (i.e. swedish name only or on top) then name=sv-name name:sv=sv-name name:fi=fi-name In finnish areas it is reversed name=fi-name name:sv=sv-name name:fi=fi-name > Its a little bit different as both languages are official languages as > i remember. > > I stick with a very simple rule - Whats on the road sign - that should > be in the database. If there is both - the one at the top should be > in name and the other in the appropriate secondary language tag. > > You want to be able to identify the road sign by your map. > > Flo > -- > Florian Lohoff f...@zz.de > ___ > talk mailing list > talk@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Detecting unwanted edits and vandalism
On 6 apr 2012, at 21:26, Adam Velkei wrote: > Dear mappers, > > I'm looking into ways to detect harmful map edits in an automated way. > I'm fairly new to OSM and I'd like to hear about what typical mistakes have > you seen while editing and what kind of changes would you consider to be > vandalism. > > Any insight would be much appreciated. > The most recent examples I've found of unintentional "vandalism" is dragging one node way out of line from the other nodes in the way. Another example is mistakenly aligning all the nodes of a fairly long way (previously a curving path) into a straight line. /Joakim ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Mapnik Lowzoom TIles - proof of concept
On 12 mar 2012, at 11:22, Frederik Ramm wrote: > Hi, > > On 03/12/12 10:21, Erik Johansson wrote: >> I'm guessing most of the terrain pixels are Corine Land cover? The >> only problem I have with this is that it will make the Corine import >> go faster in all those white areas. > > Yes, that must not be encouraged. I think that if we make roads more > prominent, then the non-landcover areas will look better. > It would be nice if landuse (forest etc) were _much_ less prominent on the default Mapnik layer. Really hard to see even major roads at low zoom if they go through a forest area as it is now. It's even a bit difficult at high zooms. :) Ex: http://www.openstreetmap.org/?lat=63.412&lon=22.659&zoom=10&layers=M I think Hike & Bike Map has better, more muted, colors for landuse: http://hikebikemap.de/?zoom=10&lat=63.412&lon=22.659&layers=BF /Joakim ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Attention, mappers in Halland, Sweden
Russ Nelson crynwr.com> writes: > Not to brag, but between Richard Welty, NE2, and I, we have New York > State is pretty darned good shape. The railroads are almost perfect, > and most counties with TIGER crap (you know what I mean -- where T > intersections are Y-shaped) have been cleaned up. We're now down to > the point where new construction is starting to be a factor in map > changes. > > You would have to work hard to find places in New York State which > aren't comparable to GM. > A bit harder to keep areas out in the woods in really good shape when you don't have PD data to work from and aerial coverage is lacking. Only way is to get in your car with your GPS and drive for hours through the forest to map all those small forestry roads like inte the Halland example. I'm actually impressed that the coverage is as good on OSM at it is in that area. Bing is just a blurry mess and there are no official sources to get CT compatible road data from. Try dropping a Google streetview pin in that area and look at the narrow roads and just forest and some fields for km after km. So the reason for no data on OSM is because there almost isn't anything there IRL either. But I guess DMI want's info on where all the forest harvesters are driving around on bad dirt roads. ;) /Joakim ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
