[OSM-talk] Coastlines

[David Groom]

----- Original Message ----- 
From: "OJW" <streetmap at blibbleblobble.co.uk>
To: <talk at openstreetmap.org>
Sent: Monday, August 14, 2006 8:49 PM
Subject: Re: [OSM-talk] Coastlines


> I've done a shapefile parser for PGS, and uploaded sample coastlines of 
> the
> Tynemouth area.  They seem to be within 10m or so of the landsat 
> coastline.
>
> http://wiki.openstreetmap.org/index.php/Tynemouth
> http://wiki.openstreetmap.org/index.php?title=Almien_coastlines_%28PGS%29
>
> Are there any particular sample areas that people would like uploaded, to
> better evaluate this dataset? (e.g. someone mentioned sydney)

Having looked at a comparison of the PGS data with the coastline data I have 
been using for the Isle of Wight I can say I was fairly impressed with the 
match.  Particularly so if you take into account the fact that the I have 
manually  adjusted the outline which originated from the scan of the out of 
date OS map  so as to be the best fit to the actual coastline

http://wiki.openstreetmap.org/index.php/Image:ComparePGS.png  shows a 
comparison for a section of the Isle of Wight coastline.  The area chosen 
includes 200 ft high cliffs, a habour, with large sandbank which dries at 
low water, and general coastline.

David

>
> Regards,
>
> OJW
>