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It is clearly visible in the satellite views on Google Maps, but the map view only shows the main road going through it. I wonder how many other such places co

by cgore 13y ago

It is clearly visible in the satellite views on Google Maps, but the map view only shows the main road going through it. I wonder how many other such places could be found just by browsing the web? This seems to be what this guy is doing. If you look at older posts of his, he is working on automatic road following in satellite imagery.

deleted 13y ago
[deleted]
arrrg 13y ago
On Google Maps many places have incomplete map data. If you get a bit farther out of Accra, Ghana, quite a few streets will just not be there. That was quite obvious when my sister was there for a few months two years ago but it seems to have gotten somewhat better. Accra is not in the middle of nowhere, it’s a major and important West African city (and 2.3 million people live there). Maps are imperfect images of reality and keeping them current costs a lot of effort. Depending on who is likely to use them maps will be more detailed in certain places – especially maps that aspire to provide global coverage. In Accra its missing roads in the suburbs, next to the place I grew up (a small town in Bavaria) its a few (but not all) footpaths in the park missing and a bad match of satellite image and map data (with streets being a few meters off in different directions, a problem that strangely doesn’t seem as prevalent in Accra).
felixthehat 13y ago
My friend Dr Bayliss did just that - 'discovered' an African rainforest, Mt Mabu on google earth, interesting read/chap http://www.theguardian.com/science/grrlscientist/2013/nov/08/mount-mabu-google-earth-maps-video http://www.theguardian.com/science/grrlscientist/2013/nov/08...
- cgore 13y ago
  That's pretty cool actually.
ajtaylor 13y ago
I live in a suburb of Sydney, Australia and in this area most of the residential streets on OSM are unnamed. So my assumption would be that there is a LOT of metadata waiting to be collected in most (all?) cities across the entire world.
- yellowbkpk 13y ago
  More than likely the roads were traced from satellite/aerial imagery and there's no source for road names. If you're in that area you might want to use the Edit button to add the road names (it's really really easy now). If you don't want to sign up for an account, you can use the "Add Note" feature in the lower right and do it anonymously.
  - ajtaylor 13y ago
    See my other comment in this thread. I'll be adding in a ton of names this weekend.

by cgore 13y ago

deleted 13y ago

[deleted]

arrrg 13y ago

On Google Maps many places have incomplete map data. If you get a bit farther out of Accra, Ghana, quite a few streets will just not be there. That was quite obvious when my sister was there for a few months two years ago but it seems to have gotten somewhat better. Accra is not in the middle of nowhere, it’s a major and important West African city (and 2.3 million people live there). Maps are imperfect images of reality and keeping them current costs a lot of effort. Depending on who is likely to use them maps will be more detailed in certain places – especially maps that aspire to provide global coverage. In Accra its missing roads in the suburbs, next to the place I grew up (a small town in Bavaria) its a few (but not all) footpaths in the park missing and a bad match of satellite image and map data (with streets being a few meters off in different directions, a problem that strangely doesn’t seem as prevalent in Accra).

felixthehat 13y ago

My friend Dr Bayliss did just that - 'discovered' an African rainforest, Mt Mabu on google earth, interesting read/chap http://www.theguardian.com/science/grrlscientist/2013/nov/08/mount-mabu-google-earth-maps-video http://www.theguardian.com/science/grrlscientist/2013/nov/08...

cgore 13y ago
That's pretty cool actually.

ajtaylor 13y ago

I live in a suburb of Sydney, Australia and in this area most of the residential streets on OSM are unnamed. So my assumption would be that there is a LOT of metadata waiting to be collected in most (all?) cities across the entire world.

yellowbkpk 13y ago
More than likely the roads were traced from satellite/aerial imagery and there's no source for road names. If you're in that area you might want to use the Edit button to add the road names (it's really really easy now). If you don't want to sign up for an account, you can use the "Add Note" feature in the lower right and do it anonymously.
- ajtaylor 13y ago
  See my other comment in this thread. I'll be adding in a ton of names this weekend.