[HOT] Admin Boundary Extraction Service

[augustindoury at gmail.com]

Here is a link : http://overpass-turbo.eu/s/cxc (click Run to run the query)
The query gets all admin_level=4 in Burkina Faso and their way members

On 08/11/2015 12:35, augustindoury at gmail.com wrote:
> Hi Samuel,
>
> This expression in the Wizard : type:relation AND admin_level=4 AND
> is_in='Burkina Faso'
> gives you all the relation type=boundary with an admin_level=4.
>
> It gives you this query :
>
>     [out:json][timeout:25];
>     (
>       relation["admin_level"="4"]["is_in:country"="Burkina
>     Faso"]({{bbox}});
>     );
>     out body;
>     >;
>     out skel qt;
>
>
> If you just want the polygons it's ok to extract this. But you won't
> extract the OSM objects members of relations, and their tags neither
> as Blake said.
>
> If you want the members to, and avoid JOSM, add :
> >>; to get all members
> node(r); to get the nodes
> way(r); to get all the ways
> relation(r); for relations
>
> Example for all members :
>
>     [out:json][timeout:25];
>     (
>       relation["admin_level"="4"]["is_in:country"="Burkina
>     Faso"]({{bbox}});
>      >>;
>     );
>     out body;
>     >;
>     out skel qt;
>
> Good luck
>
> Augustin
>
> Yo
>
> On 08/11/2015 12:04, Samuel Aiyeoribe wrote:
>> Thank you Blake,
>>
>> This looks promising. Even though i use Overpass turbo several times,
>> i haven't looked into the overpass api.
>>
>> I will be happy to receive other suggestions and people's experiences.
>>
>> Cheers
>>  
>> Samuel Aiyeoribe
>>
>>
>>
>> On Sunday, 8 November 2015, 12:53, Blake Girardot
>> <blake.girardot at hotosm.org> wrote:
>>
>>
>> Hi Samuel,
>>
>> I have used overpass-turbo.eu to extract just admin boundaries before
>> and it seems to work well.
>>
>> I then have to pass the results over to JOSM and download the missing
>> members to get all the points and ways that make up the boundaries,
>> but that is probably because I do not know overpass-turbo well enough
>> to have it grab all the elements automatically.
>>
>> overpass-turbo consists of 2 major parts, the web front (Overpass
>> Turbo) and the Overpass-API which handles searching OSM data, both are
>> available from GitHub. Overpass-API works with local .osm.gz files so
>> it can take a full OSM Planet file and minutely updates and run
>> totally locally.
>>
>> http://overpass-api.de/
>> https://github.com/tyrasd/overpass-turbo
>>
>> Probably not the easiest solution to your question, but at least you
>> can try out Overpass-Turbo and make sure it does what you want before
>> you try and run it locally.
>>
>> Here is one I used last week for one of our contacts who needed admin
>> boundaries for Serbia: http://overpass-turbo.eu/s/cx8
>>
>> Like, I said, there might be simpler (I hope) answers to your
>> question, but Overpass is one I think.
>>
>> Cheers,
>> blake
>>
>> On Sun, Nov 8, 2015 at 6:00 AM, Samuel Aiyeoribe
>> <olubunmi4ever at yahoo.co.uk <mailto:olubunmi4ever at yahoo.co.uk>> wrote:
>> > Hello HOTties,
>> >
>> > Please does anyone know of a service for extracting/downloading OSM
>> Admin
>> > Boundary that one can fork and host myself and also available on
>> github.
>> >
>> > Looking forward to your reply.
>> >
>> > Cheers
>> >
>> > Samuel
>> >
>> > _______________________________________________
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>> > HOT at openstreetmap.org <mailto:HOT at openstreetmap.org>
>> > https://lists.openstreetmap.org/listinfo/hot
>>
>> >
>>
>>
>>
>> -- 
>> ----------------------------------------------------
>> Blake Girardot
>> Humanitarian OpenStreetMap Team
>> Vice President, HOT Board of Directors
>> skype: jblakegirardot
>> HOT Core Team Contact: info at hotosm.org <mailto:info at hotosm.org>
>>
>>
>>
>>
>>
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>

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