5 ms·

Examples, please. There is bad info here and there, but it's minority (if you want 100% accuracy it's delusional, even Google Maps has a ton of crap, starting f

by rathel 6y ago

Examples, please. There is bad info here and there, but it's minority (if you want 100% accuracy it's delusional, even Google Maps has a ton of crap, starting from skylights that AI recognized as buildings [3] to businesses you can't even tell they exist). Also, for a long time now each changeset can be discussed. [1] I have a hunch you may be from a country where the community has not took up too much [2]. These tend to have more dubious data. [1] https://blog.openstreetmap.org/2014/11/02/introducing-changeset-discussions/ https://blog.openstreetmap.org/2014/11/02/introducing-change... [2] https://osmstats.neis-one.org/?item=countries https://osmstats.neis-one.org/?item=countries [3] https://goo.gl/maps/knpT8eRR4YhB6Sm86 https://goo.gl/maps/knpT8eRR4YhB6Sm86 - look at the shopping mall in satellite and map view

ucosty 6y ago
Not OP, but I'm in the UK and find the OSM data to be not all that useful. The streets themselves seem mostly accurate, but there is almost no building data. If you had to rely on OSM data to get around, your best bet would be to live and work in northeast London, within the circular.
- Doctor_Fegg 6y ago
  YMMV really. OSM in the UK has orders of magnitude more cycling and walking data than Google, for example, but fewer buildings. I don't generally find I need buildings in my day-to-day mapping needs but everyone's different I guess.
  - bpye 6y ago
    I have found this in the U.K., Canada, Japan and Taiwan - OpenStreetMaps is way better as a pedestrian or a cyclist in my experience, at least in relatively built up areas.
- the_pwner224 6y ago
  Its the same in many parts of the USA. For example in a college town with 50k students / 50k permanent population, streets are complete with sidewalks and bike trails etc., but good luck trying to find nearby restaurants by looking around the map, like you can do with google maps. Even the buildings which are marked with their name and type usually lack operating hours, phone number, website url and other sorts of info that GMaps has. But the situation is much better - close to GMaps level - in big cities here.
  - matkoniecz 6y ago
    > lack operating hours If you have an Android phone - I want to plug StreetComplete app here. I never mapped opening hours before I started using it. It asks simple questions, there is no requirement to learn anything OSM specific. Registration at OSM website is probably the biggest hurdle. (disclaimer: I am one of contributors to that project)
- smichel17 6y ago
  A great thing about OSM is that you can improve the data, specifically in your local area so that at the very least it will no longer have spotty coverage of the places you frequent. I use https://github.com/westnordost/StreetComplete https://github.com/westnordost/StreetComplete for doing this so I don't have to make the investment to learn the technical details of tags.
  - drstewart 6y ago
    "You have to create the map to use the map" isn't as compelling of a feature for a mapping service as you think it is
    - nelgaard 6y ago
      OP talked about improving OSM using StreetComplete. So this is about adding missing speed limits, opening hours, roof shapes, recycling containers, tactile pavement at bus stops, etc. Hardly "creating the map". When I travel to a place where OSM could need improvement I make sure that at least the hotel I will be staying at, nearby restaurants, bars and museums, etc are correctly tagged with phone numbers, opening hours etc. It is not much work and it gives me an opportunity to decide what I want to do before I leave. When I get there I then have everything ready offline in OsmAnd. In a way I just update OSM instead of adding my own bookmarks/favorites.
    - smichel17 6y ago
      nelgaard got the gist of it. I've never encountered an area where OSM didn't have the roads and buildings already mapped. I have encountered areas where it didn't have the speed limits and house numbers of those structures (and, once or twice, places lacking a road name, but that's pretty rare). But, my personal perspective was a little different. It's more like: I want to use OSM, and get others to use OSM instead of proprietary mapping solutions like Google's, for moral reasons. In that context, being able to make sure my friends can always get to my house using OSM is a great boon. I realize I didn't share that perspective in my original post, which is probably the source of the confusion here.
- 7952 6y ago
  The great thing about OSM is the currency. New developments will be added more qucikly. But for completeness and consistency Ordnance Survey data will just be better. And they do have a free building dataset, and even pre-generated vector tiles.
  - gnufx 6y ago
    Even the OS data -- at least what I can see in Aurora -- might not be as complete as where someone has taken an interest in a new development, such as one near here. The OpenData building shapes are a good start, but they appear to have been auto-generated, and usually need correcting from up-to-date satellite imagery, if not a survey.
- gnufx 6y ago
  Whether buildings are mapped, and in what detail, just depends on the area; detailed mapping definitely isn't confined to London. The main utility of mapping buildings for navigation might be to tag them with postcodes, even if that's not ideal. Roads are typically at least as accurate as OS OpenData where I've looked.
c0nsumer 6y ago
Roads in rural areas are a HUGE problem. Particular in remote / forested places where logging roads were used in TIGER data. For example, places like this: https://www.openstreetmap.org/#map=14/46.6397/-87.7149 https://www.openstreetmap.org/#map=14/46.6397/-87.7149 There's a number of us who use this kind of data for building back country cycling routes, and while it's great guidance, there's both the problem with roads being listed that are no longer passable (nor often even visible at ground level), or other routes available that don't exist. Of course, this gets back to the way much of the data is crowd sourced... And we're working on that. :)
- gerbal 6y ago
  Anecdotally, in Northern Wisconsin, GMaps is only slightly better than OSM on abandoned logging roads. There are a lot of private gated or abandoned roads and logging tracks which Google Maps will use for route planning.
  - c0nsumer 6y ago
    That's kinda how it is here. The best thing seems to be to bounce between Google Maps and OSM and an aerial view to get a sense of what's up. For an interesting example, check out this place: Google: https://www.google.com/maps/@46.4133003,-87.5248774,5345m/data=!3m1!1e3 https://www.google.com/maps/@46.4133003,-87.5248774,5345m/da... OSM: https://www.openstreetmap.org/#map=14/46.4161/-87.5406 https://www.openstreetmap.org/#map=14/46.4161/-87.5406 Neither has the actual current lake boundaries (as used as a retention pond), Google has roads where the lake is while OSM doesn't, etc.
    - maxerickson 6y ago
      3dep can be a huge help in figuring out how prominent tree covered roads are. https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer https://elevation.nationalmap.gov/arcgis/rest/services/3DEPE... It's listed as a Theme Overlay at https://viewer.nationalmap.gov/services/ https://viewer.nationalmap.gov/services/
INTPenis 6y ago
I wanted to use node data on shops, like if they take cash or not for example. Noticed there was already a lot of shops with data in there. But none of it was accurate. Just one example is that an Apple store in Sweden was set to accept cash. Just for fun I called them up and asked if they take cash and they laughed at me. It seemed to me that someone had automated input for businesses without actually verifying their data.

by rathel 6y ago

ucosty 6y ago

Not OP, but I'm in the UK and find the OSM data to be not all that useful. The streets themselves seem mostly accurate, but there is almost no building data. If you had to rely on OSM data to get around, your best bet would be to live and work in northeast London, within the circular.

Doctor_Fegg 6y ago
YMMV really. OSM in the UK has orders of magnitude more cycling and walking data than Google, for example, but fewer buildings. I don't generally find I need buildings in my day-to-day mapping needs but everyone's different I guess.
- bpye 6y ago
  I have found this in the U.K., Canada, Japan and Taiwan - OpenStreetMaps is way better as a pedestrian or a cyclist in my experience, at least in relatively built up areas.
the_pwner224 6y ago
Its the same in many parts of the USA. For example in a college town with 50k students / 50k permanent population, streets are complete with sidewalks and bike trails etc., but good luck trying to find nearby restaurants by looking around the map, like you can do with google maps. Even the buildings which are marked with their name and type usually lack operating hours, phone number, website url and other sorts of info that GMaps has. But the situation is much better - close to GMaps level - in big cities here.
- matkoniecz 6y ago
  > lack operating hours If you have an Android phone - I want to plug StreetComplete app here. I never mapped opening hours before I started using it. It asks simple questions, there is no requirement to learn anything OSM specific. Registration at OSM website is probably the biggest hurdle. (disclaimer: I am one of contributors to that project)
smichel17 6y ago
A great thing about OSM is that you can improve the data, specifically in your local area so that at the very least it will no longer have spotty coverage of the places you frequent. I use https://github.com/westnordost/StreetComplete https://github.com/westnordost/StreetComplete for doing this so I don't have to make the investment to learn the technical details of tags.
- drstewart 6y ago
  "You have to create the map to use the map" isn't as compelling of a feature for a mapping service as you think it is
  - nelgaard 6y ago
    OP talked about improving OSM using StreetComplete. So this is about adding missing speed limits, opening hours, roof shapes, recycling containers, tactile pavement at bus stops, etc. Hardly "creating the map". When I travel to a place where OSM could need improvement I make sure that at least the hotel I will be staying at, nearby restaurants, bars and museums, etc are correctly tagged with phone numbers, opening hours etc. It is not much work and it gives me an opportunity to decide what I want to do before I leave. When I get there I then have everything ready offline in OsmAnd. In a way I just update OSM instead of adding my own bookmarks/favorites.
  - smichel17 6y ago
    nelgaard got the gist of it. I've never encountered an area where OSM didn't have the roads and buildings already mapped. I have encountered areas where it didn't have the speed limits and house numbers of those structures (and, once or twice, places lacking a road name, but that's pretty rare). But, my personal perspective was a little different. It's more like: I want to use OSM, and get others to use OSM instead of proprietary mapping solutions like Google's, for moral reasons. In that context, being able to make sure my friends can always get to my house using OSM is a great boon. I realize I didn't share that perspective in my original post, which is probably the source of the confusion here.
7952 6y ago
The great thing about OSM is the currency. New developments will be added more qucikly. But for completeness and consistency Ordnance Survey data will just be better. And they do have a free building dataset, and even pre-generated vector tiles.
- gnufx 6y ago
  Even the OS data -- at least what I can see in Aurora -- might not be as complete as where someone has taken an interest in a new development, such as one near here. The OpenData building shapes are a good start, but they appear to have been auto-generated, and usually need correcting from up-to-date satellite imagery, if not a survey.
gnufx 6y ago
Whether buildings are mapped, and in what detail, just depends on the area; detailed mapping definitely isn't confined to London. The main utility of mapping buildings for navigation might be to tag them with postcodes, even if that's not ideal. Roads are typically at least as accurate as OS OpenData where I've looked.

c0nsumer 6y ago

Roads in rural areas are a HUGE problem. Particular in remote / forested places where logging roads were used in TIGER data. For example, places like this: https://www.openstreetmap.org/#map=14/46.6397/-87.7149 https://www.openstreetmap.org/#map=14/46.6397/-87.7149 There's a number of us who use this kind of data for building back country cycling routes, and while it's great guidance, there's both the problem with roads being listed that are no longer passable (nor often even visible at ground level), or other routes available that don't exist. Of course, this gets back to the way much of the data is crowd sourced... And we're working on that. :)

gerbal 6y ago
Anecdotally, in Northern Wisconsin, GMaps is only slightly better than OSM on abandoned logging roads. There are a lot of private gated or abandoned roads and logging tracks which Google Maps will use for route planning.
- c0nsumer 6y ago
  That's kinda how it is here. The best thing seems to be to bounce between Google Maps and OSM and an aerial view to get a sense of what's up. For an interesting example, check out this place: Google: https://www.google.com/maps/@46.4133003,-87.5248774,5345m/data=!3m1!1e3 https://www.google.com/maps/@46.4133003,-87.5248774,5345m/da... OSM: https://www.openstreetmap.org/#map=14/46.4161/-87.5406 https://www.openstreetmap.org/#map=14/46.4161/-87.5406 Neither has the actual current lake boundaries (as used as a retention pond), Google has roads where the lake is while OSM doesn't, etc.
  - maxerickson 6y ago
    3dep can be a huge help in figuring out how prominent tree covered roads are. https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer https://elevation.nationalmap.gov/arcgis/rest/services/3DEPE... It's listed as a Theme Overlay at https://viewer.nationalmap.gov/services/ https://viewer.nationalmap.gov/services/

INTPenis 6y ago

I wanted to use node data on shops, like if they take cash or not for example. Noticed there was already a lot of shops with data in there. But none of it was accurate. Just one example is that an Apple store in Sweden was set to accept cash. Just for fun I called them up and asked if they take cash and they laughed at me. It seemed to me that someone had automated input for businesses without actually verifying their data.