[OSM-newbies] Cleaning up coastal and river edges.

maarten menheere m.menheere at gmail.com
Sat Mar 24 17:40:48 GMT 2007


Thanks for the reply that's to bad. Rotterdam is a city with a lot of water
this makes the city barely recognisable. Love to see this fixed.

Maarten

On 3/23/07, David Groom <reviews at pacific-rim.net> wrote:
>
>  Maarten
>
> you may have noticed the current thread on the main talk thread entitled
> "Slippy Map - Mapnik Layer UK coastlines".
>
> As a bit of background, as far as I know, most coastline data in the OSM
> database came from the PGS coastline import
> http://wiki.openstreetmap.org/index.php/Almien_coastlines_%28PGS%29 ,
> which does generate rather rough and jagged coastline data.
>
> In the UK I then went edited the whole of England & Wales, and parts of
> Scotland, and smoothed out, realigned, and made other edits to the data
> using the Landsat overlay in JOSM.  As a result the Osmarender layer for
> most of the UK coastline doesn't look too bad.
>
> The Mapnik layer however doesn't use much of that data, and as a result
> much of it is still jagged.
>
> My view at the moment would be that until the issue of what to do with
> coastlines on the Mapnik layer is resolved then not to bother smoothing out
> the coastline data around Rotterdam by editing what already exists in the
> database.
>
> David
>
>
> ----- Original Message -----
> *From:* maarten menheere <m.menheere at gmail.com>
> *To:* newbies at openstreetmap.org
> *Sent:* Friday, March 23, 2007 6:26 PM
> *Subject:* [OSM-newbies] Cleaning up coastal and river edges.
>
> Hi All,
>
> I'm working in the vicinity of Rotterdam with a lot of rivers and coast
> lines. These seem to be auto generated and look very rough and jagged. Is it
> a good idea to clean this up a bit so that is looks nicer. Without using GPS
> data.
>
> Maarten
>
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>
>
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