[OSM-talk] Coastlines

David Groom reviews at pacific-rim.net
Mon Aug 21 23:28:54 BST 2006


>----- Original Message ----- 
>From: "OJW" <streetmap at blibbleblobble.co.uk>
>To: <talk at openstreetmap.org>
>Sent: Monday, August 21, 2006 7:43 PM
>Subject: Re: [OSM-talk] Coastlines


>On Monday 21 August 2006 19:30, you wrote:
>> Well, let me just check all of the data uploaded so far, since you
>>didn't just upload Amager, (the small island near Copenhagen, with the
>> airport), but as far as I can see, you uploaded most of the island of
>> Sjælland (the large eastern isle of Denmark).
>
>Uploaded area was 55-56N, 11-13W.
>
>http://almien.co.uk/OSM/CoastlineUpload/
>
>I'm wondering if we should think more carefully before just adding numbers 
>to
>correct an apparent shift - e.g. is it possible the data isn't referenced 
>to
>WGS-84?


The Shoreline Data whitepaper 
http://www.nga.mil/NGASiteContent/StaticFiles/P/shoreline_data.doc is rather 
badly worded, but my understanding is that it is using WSG-84.

David









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