[Talk-es] CORINE land cover data

[Oscar Orbe]

Hola, he hecho lo siguiente: me bajo los shapefiles de bosques y olivares de CORINE, los parto para que no tengan agujeros (me dan mal rollo), y les resto (difference) el último shapefile 'natural.shp' de geofabrik.de (así evitamos casi todas las colisiones), finalmente lo separo en provincias para no manejar archivos tan grandes y lo convierto a OSM. Las herramientas usadas producen nodos duplicados en la frontera de polígonos adyacentes, pero no creo que eso deba preocuparnos mucho, siempre se puede pulir el resultado. Como ejemplo, ya he subido la provincia de Toledo (poco mapeada y bastante rural):
http://www.openstreetmap.org/?lat=39.8601&lon=-4.0206&zoom=13&layers=M
Mi idea era subir las provincias poco a poco a ir viendo si se causan muchos problemas. Las provincias con mucho OSM (Madrid y alguna del norte) posiblemente quedarían excluídas.--Oscar





--- On Mon, 1/3/11, andrzej zaborowski <balrogg en gmail.com> wrote:

From: andrzej zaborowski <balrogg en gmail.com>
Subject: Re: [OSM-talk] CORINE land cover data
To: "Oscar Orbe" <oskarorbe en yahoo.com>
Cc: talk en openstreetmap.org, talk-es en openstreetmap.org
Date: Monday, January 3, 2011, 1:57 PM

On 3 January 2011 14:36, Oscar Orbe <oskarorbe en yahoo.com> wrote:
> Andrzej: "there's some ongoing work on CLC06 mixed with GMES Urban Atlas data import for Poland and Spain"
> I'm preparing an import of forests (3 shapefiles) and olive groves (1 shapefile) for Spain. Where can I see that on-going work?

Actually it hasn't advanced much for the last month, but I posted a
link to the WMS showing the polygons that would be imported back in
November (http://lists.openstreetmap.org/pipermail/talk-es/2010-November/006366.html).
 The WMS is currently down because I decided to re-generate all the
data using a different schema to help in joining of the two datasets,
but later had no time to complete it.  I'll try to revive the WMS
later today.

I have a postgres database filled with all of the CLC06 data for
Europe and GMES Urban Atlas for Spain, if you would like to work on it
I can set up an account for you (Javier Sanchez also has been playing
with that database)

Here are the problems that I'd like to solve before starting an actual import.

 * Some Urban Atlas land classes contain many CLC06 classes (for
example Urban Atlas has a class "forest", while CLC06 has separate
classes for "mixed forests", "coniferous forests" etc.), so it would
be best to take the geometry from the Urban Atlas, but the exact
subclass from CLC06.

 * The upload tool needs be intelligent and needs to detect collisions
with existing OSM polygons, and then the colliding polygons need to be
put into a webservice that lets people download .osm files for each
polygon and handle the conflict manually.  It would also be nice if
the uploader tool used the diffs from planet.osm.org to find existing
nodes so that the automatically uploaded polygons re-use nodes instead
of creating duplicates (even if the nodes were created manually).

 * I'd like the WMS to visualise colliding polygons too.

Cheers



      
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