----- Original Message -----
From: "Simone Cortesi" <sim...@cortesi.com>
To: "Michal Migurski" <m...@stamen.com>
Cc: "Talk Openstreetmap" <talk@openstreetmap.org>
Sent: Thursday, November 17, 2011 9:54 AM
Subject: Re: [OSM-talk] Argh, Canvec imports
On Thu, Nov 17, 2011 at 08:40, Michal Migurski <m...@stamen.com> wrote:
A cry of frustration:
I do bimonthly runs of the worldwide coastlines
(http://metro.teczno.com/#coastline), and Canada seems to be a recurring
source of problems. What the heck is going on up there? I consistently
see
new imports of what seems to be Canvec data screwing up coastlines and
making for some deeply broken renders:
http://mike.teczno.com/img/broken-coast.png
Most of that junk in the Atlantic Ocean is newly introduced within the
last few weeks, and is making it difficult to get out a clean coastline
suitable for rendering. It shows up in the main OSM mapnik tiles in
Hudson
Bay, too:
http://www.openstreetmap.org/?lat=55.7&lon=-83.6&zoom=5&layers=M
I've been trying to fix problems as I encounter them and I've managed to
fix invalid coastilnes around Baltimore, Houston, Tampa and the dreaded
Montréal area in an effort to generate a usable map of North America, but
this Canvec stuff is absolutely killing me.
I care about the coastline too,
long time ago there used to be this:
http://www.openstreetmap.nl/coastlines.html where anyone could go and
fix coastline errors that did show up on a purpose made mapnik layer.
I see there is a geofabrik layer for that same purpos, but it is
limited just to europe.
Michal, are you aware of any such layer, but worldwide?
Simone
I use this http://www.wightpaths.co.uk/coast/ . I generate the error
points from the error points shapefile at http://metro.teczno.com/#coastline
My version is not as comprehensive as the old version at
http://www.openstreetmap.nl/coastlines.html , since it only shows the error
points. I try and remember to look every couple of weeks to see if there
are new extracts http://metro.teczno.com/, and then regenerate my error
file.
David
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