[OSM-talk] oneway=1

[D Tucny]

On 03/10/2007, Arieh Skliarouk <skliarieh at gmail.com> wrote:
>
>
> I, as OSM user, prefer to have 95% of the city outlined in a week, so
> I can fill necessary details as I go, instead of waiting for some bike
> surveyor to map 100% in two years.
>
> Oh, and one small question: where do I get bike surveyor for my city
> (population 10.000.000) please?


Step 1) Buy a bike, a GPS device, a camera and something else for note
taking, voice recorder might do it...
Step 2) Look at areas without coverage, cycle around them with GPS active,
taking photos and recording additional notes
Step 3) Go home, load up your traces, your pictures, your sound files and
start mapping...

Population doesn't make much of a difference... Every single node so far in
the, only 7 million population, city I'm in has been done by me, mostly as a
result of my cycling around, but some from taxi, bus and train journeys
too...

If you can get other sources of traces, such as GPS traces from taxies,
couriers, street cleaners, etc. Great! But, traces aren't everything... If
you had a trace from each of those and one from you on your bike, you can
make the way more accurate by manually averaging the path of the way from
the multiple traces, but, as far as the map goes, you still need to go
everywhere to survey it, get the road names, get the speed limits, assess
the type of road etc... Yep, you can do some more cool things with the
traces, like work out average speeds at different types of day on different
roads, given enough of them, but, that's only probably useful once you have
a map, and, that takes surveying...

d
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