OpenStreetMap
Mapping Niger/Mali- a 1.8 million city pops up
Vum zenfunk matgedeelt de(n) 19. Dezember 2010 op English.Friday I called for help to map Bamako- the capital of Mali- and you (you know who you are..) did an awesome job so far. It doesn't happen often that a 1.8 Million city emerges from allmost a white space on the map to something we have now.
Currently I'd guess that around 15% of all the ways of the bing imagery are traced, so there is still plenty of work to do. If you have some time to spare, feel free to join the fun.
Happy mapping,
Christian
Diskussioun
Bemierkung vum JesperFj de(n) 20. Dezember 2010 um 13:07 Auer
Happy to help. It's looking good so far. I've been using highway=residential for all the small roads between the houses, but I was wondering whether some may be too small for this. Either way, there are bound to be issues like this, but a useful map is emerging none the less.
Bemierkung vum zenfunk de(n) 20. Dezember 2010 um 18:50 Auer
I did basically the same. Only when a small road just leads to one or two houses and it isn't very clear if it isn't just a private driveway, then I use highway=service.
With good aerail imagery one can begin to add stuff like outdoor markets, parks, woods, industrial sites etc. I never thought I'd say it, but here, Bing really is a godsent.
OSM ist just amazing. Even building outlines start to appear- see the train station for example.
Bemierkung vum compdude de(n) 21. Dezember 2010 um 00:03 Auer
Wow, it's pretty easy to tell the extent of the Bing imagery:). I'm not sure if anybody else has noticed, but you can kind of see a "box" from where it goes from being a bunch of roads to none at all.
Bemierkung vum z-dude de(n) 21. Dezember 2010 um 00:25 Auer
This mapping project seems to be redefining the definition of road.
Some roads on the north side of town seem washed out, but it was a road sized gap between houses. In some spots it was clear there was a creek, (tagged a creek), in some spots it looked like a road with bad drainage (tagged as road)
Some roads are historical, in the remote ghost town sections where you can make out streets, but 80% of the buildings are gone. (tagged as residential roads)
Some areas have diagonal tracks running thru the ghost town areas (tagged as tracks)
Some tracks lead out into the desert. Usually I'd tag something like that as a track, but it's clear that they connect villages, so I tagged them as minor roads.
I've been tagging the very small roads in shanty towns as tracks or service roads depending on whether a person could drive a car thru there.
Then there are little villages outside of the main town which have hardly any roads or tracks going thru a cluster of buildings.
I'd suggest that the Geekcorps stitch some of these tiles together to make a printable map so people can make money selling maps to tourists.