[OSM-talk] IoW data
nickblack1 at gmail.com
Thu Apr 27 12:19:15 BST 2006
There is a freely available worldwide coastline data set, available from
The data is free to use for private or commercial uses and includes SRTM,
Landsat etc. See my post on the wiki
http://wiki.openstreetmap.org/index.php/Potential_Datasources for more
On 4/27/06, David Groom < reviews at pacific-rim.net> wrote:
> I've just converted the coastline data into a gpx file, opened it in JOSM
> and then in JOSM I downloaded OSM tracks for the Isle of Wight.
> At present there is not much OSM tracking for the Island, so its a bit
> difficult to make a conclusion, but my gut feeling is that the
> orthorectification is slightly adrift, and that the coastline data should
> very slightly north west of where it is. This is based on my comparison
> four areas where I am fairly certain I know how the roads I have uploaded
> OSM should look in relation to the coastline.
> The actual coastline outline however seems very accurate, its just the
> orthorectification vis a vi OSM which seems adrift
> ----- Original Message -----
> From: "Richard Fairhurst" <richard at systemeD.net>
> To: <talk at openstreetmap.org>
> Sent: Thursday, April 27, 2006 12:27 AM
> Subject: [OSM-talk] IoW data
> > I've traced a complete coastline for the Isle of Wight, with 1379
> > It's at http://wiki.openstreetmap.org/index.php/Isle_of_Wight_Coastline.
> > The outline was traced from an out-of-copyright map, then manually
> > orthorectified, and finally converted from OSGB to lat/long. It should
> > generally accurate, but there will inevitably be a few places where it
> > slips a little and may need correcting by real-life, GPS-equipped
> > surveyors...!
> > From the IoW project page, I've also linked to an SRTM-derived,
> > DEM2TOPO-generated file of 50m contours for the island.
> > Richard
> > _______________________________________________
> > talk mailing list
> > talk at openstreetmap.org
> > http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
> talk mailing list
> talk at openstreetmap.org
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