[OSM-talk] AND China data

[D Tucny]

2008/6/17 D Tucny <d at tucny.com>:

> Roads
>  - I'm still not convinced by these... The fact that they seem obviously
> very out of date, have a low resolution, lack names or references and the
> fact that they in many cases just seem to join together in a city point
> makes me think that they don't really add much... Obviously they would make
> it look like we had data, but, I don't think, they really give us anything
> approaching usable data... As it stands, I'd say they are not worth
> importing... Potentially splitting the road data out and breaking it down
> based on provinces and leaving those files somewhere accessible would be
> useful, maybe at some point the the future, someone in a remote location may
> find that the data is useful for their area, but, even if an area hasn't had
> any road improvements in the past 10-20 years, pretty unlikely for major
> roads even in remote locations, I'm not convinced the data would even give
> much value there... As I mentioned in IRC, our data would probably be a more
> accurate reflection of what's there if we imported all the GNS places, and
> joined all large cities together with straight lines tagged as motorway,
> drop a bit of terrain information into the process to make some curves and
> it would probably be a lot more accurate, could then even join up smaller
> cities with non-motorways... I'm not suggesting we do this, I'm just trying
> to explain my feel on the data that if all we want is less white space,
> making data up using some form of guestimation as to where roads would
> probably be built would probably give us something more useful/accurate than
> this road data...
> --- snip ---
>

Replying to myself, but... perhaps, thinking about it, yahoo's landsat
imagery might prove enough to get some of the roads moved to where roads
really exist and modernised a bit... In which case, maybe just dropping the
place names and urban boundaries would do... Where there's better data
available this data can just be deleted after all... so in summary, I'm less
against importing the roads now, as they could help with clues as to where
to trace...

d
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