From gormer at gmail.com  Tue Jan 11 07:20:49 2011
From: gormer at gmail.com (Gorm Eriksen)
Date: Tue, 11 Jan 2011 13:20:49 +0100
Subject: [Osmlib-user] Creating polygons from boundaries
Message-ID: <AANLkTik9n9W3QGTXsgTHuRD8DE=A6vAfE=Z2xDA=+2bm@mail.gmail.com>

Hi, I have an question regarding creating polygons from OSM boundary
data that we need for a Norwegian version of fixmystreet.

The data consist of a relation of type 'boundary' that contains a
number of member ways  The ways themselves are closed. I have tried to
change the type of the relation to 'polygon' to prevent the exception
raised on the boundary type, but the data file produced is empty when
I work with polygons (polylines works fine).

I have put a copy of the test OSM file here:
http://dl.dropbox.com/u/4954103/nordland.osm

The oxr file I have used looks like this:

setup :Shp do
    polygon :area do
        string :id, 16
        string :name, 32
    end
end

relations do
  :area << { :id => ref, :name => name  }
end

Any idea why this creates an empty area.shp file? Am I missing
something or do I need a more clever oxr file?

thanks for any help,

- Gorm E

From jochen at remote.org  Thu Jan 13 04:36:43 2011
From: jochen at remote.org (Jochen Topf)
Date: Thu, 13 Jan 2011 22:36:43 +1300
Subject: [Osmlib-user] Creating polygons from boundaries
In-Reply-To: <AANLkTik9n9W3QGTXsgTHuRD8DE=A6vAfE=Z2xDA=+2bm@mail.gmail.com>
References: <AANLkTik9n9W3QGTXsgTHuRD8DE=A6vAfE=Z2xDA=+2bm@mail.gmail.com>
Message-ID: <20110113093643.GA5501@atlantis>

osmlib does not handle boundary or multipolygon relations.

Have a look at Osmium. It might do what you need:
http://blog.jochentopf.com/2011-01-05-osmium.html

Jochen

On Tue, Jan 11, 2011 at 01:20:49PM +0100, Gorm Eriksen wrote:
> Date: Tue, 11 Jan 2011 13:20:49 +0100
> From: Gorm Eriksen <gormer at gmail.com>
> To: osmlib-user at rubyforge.org
> Subject: [Osmlib-user] Creating polygons from boundaries
> 
> Hi, I have an question regarding creating polygons from OSM boundary
> data that we need for a Norwegian version of fixmystreet.
> 
> The data consist of a relation of type 'boundary' that contains a
> number of member ways  The ways themselves are closed. I have tried to
> change the type of the relation to 'polygon' to prevent the exception
> raised on the boundary type, but the data file produced is empty when
> I work with polygons (polylines works fine).
> 
> I have put a copy of the test OSM file here:
> http://dl.dropbox.com/u/4954103/nordland.osm
> 
> The oxr file I have used looks like this:
> 
> setup :Shp do
>     polygon :area do
>         string :id, 16
>         string :name, 32
>     end
> end
> 
> relations do
>   :area << { :id => ref, :name => name  }
> end
> 
> Any idea why this creates an empty area.shp file? Am I missing
> something or do I need a more clever oxr file?
> 
> thanks for any help,
> 
> - Gorm E
> _______________________________________________
> Osmlib-user mailing list
> Osmlib-user at rubyforge.org
> http://rubyforge.org/mailman/listinfo/osmlib-user
> 

-- 
Jochen Topf  jochen at remote.org  http://www.remote.org/jochen/  +49-721-388298