[Talk-GB] Talk-GB Digest, Vol 35, Issue 31

[David Earl]

On 21/08/2009 10:38, Eric Ingram wrote:
> Having just looked at the West Lothian area on the OSM map, I would have 
> to disagree about the coverage for it.
> 
> There is still a lot of work to be done to complete Livingston and 
> several of the other towns (e.g. Bathgate, Armadale, Whitburn, etc) are 
> scarcely covered at all. I'd be surprised if the actual coverage was as 
> much as 30%`

I guess it is down to how you measure completeness. I think Peter's 
initiative is excellent and very helpful, especially for comparison.

It's bound to be weighted, though, by long lengths of major roads which 
on the whole have good representation in OSM, but don't represent 
population density.

Maybe all that that says is that this is indeed a good measure, but the 
final 15% is the most difficult 15% to map, as it comprises the 
relatively short dead-end roads in housing estates, which in terms of 
number rather than length must be more than half of the total and need 
to be done systematically and tediously to ensure completeness.

But maybe it is also the most important 15% because that's what's going 
to make the map acceptable to people in general and information 
providers in particular.

David