[HOT] Admin Boundary Extraction Service

[Rafael Avila Coya]

That website link is the same that Johan Emilsson gave in a previous
email in this same thread ;)

It's good that this service let's you choose between several different
output formats (although, very surprising, not osm format!)

But it's very inconvenient if you want for example to download, let's
say a Nigerian state with all LGA's (districts) + all wards
(municipalities) of each LGA. Or at least I couldn't see the way, except
selecting one by one every boundary you want to download, something very
time consuming if you have to select 75 districts and around 15 wards
for each of those districts.

Plus, I am not sure how often it updates the data.

Cheers,

Rafael.

On 08/11/15 22:13, Dale Kunce wrote:
> Samuel,
> There is this service I discovered a few days ago. 
> 
> https://osm.wno-edv-service.de/boundaries/
> 
> Can't speak to its quality yet though.
> 
> Dale
> 
> On Sun, Nov 8, 2015 at 3:30 PM, Rafael Avila Coya <ravilacoya at gmail.com
> <mailto:ravilacoya at gmail.com>> wrote:
> 
> Hi, Samuel:
> 
> Here you have an overpass query to get all boundary relations for all
> states, LGA's and wards of Nigeria, with the admin_centre's and label
> of each relation when available: http://overpass-turbo.eu/s/cxp
> 
> If you want Nigeria country boundary relation too, just change "4|6|8"
> by "2|4|6|8". In case you want for example only states and LGA's, just
> do "4|6", and so on.
> 
> In case you want only the boundaries for a certain state, you can use
> this query (this example is for Kano state):
> http://overpass-turbo.eu/s/cxt
> 
> In case you don't want the admin_centre's nor labels nodes of any
> relation, you have to run a different query. This one is for Kano:
> http://overpass-turbo.eu/s/cxs
> 
> Whenever possible, I advise to use area codes instead names. For
> example, Niger is the name of a state in Central Nigeria, but it's
> also the name of Nigerias north neighbour country: Niger.
> 
> Getting the area code is simple: go to osm.org <http://osm.org>,
> search for the area
> you are interested in (example Niger), get the relation id we want (in
> our case, let's say we want Nigeria's Niger state relation id, so we
> click in "State Boundary Niger, Nigeria" link, not in "country,
> Niger"), and then we copy it's id (in our example 3718384), and we add
> 3600000000 + 3718384 = 3603718384 <tel:3603718384> to get the Niger
> state area code for
> overpass queries: (area:3603718384 <tel:3603718384>)
> 
> To avoid a query to overload your web browser, instead of hitting
> "run" button, click in "Export" button instead. There, go to "Query"
> and then click on "compact" in the "convert to (compact) OverpassQL"
> link. That will open a new window with a compact OverpassQL link.
> Click on it and it will make the query and download directly in your
> file system the result of the query. For example, for the last example
> query (Kano state boundaries without admin_centre's nor labels), the
> link is like this one:
> http://overpass-api.de/api/interpreter?data=%5Btimeout%3A250%5D%3B%28relation%5B%22boundary%22%3D%22administrative%22%5D%5B%22admin%5Flevel%22%7E%224%7C6%7C8%22%5D%28area%3A3603710302%29%3B%29%2D%3E%2ErelBoundary%3B%28way%28r%2ErelBoundary%29%3B%29%2D%3E%2EwaysBoundary%3B%28node%28w%2EwaysBoundary%29%3B%29%2D%3E%2EnodesBoundary%3B%28%2ErelBoundary%3B%2EwaysBoundary%3B%2EnodesBoundary%3B%29%3Bout%20meta%3B%0A
> 
> If you need any more sofisticated query, just let us know:
> 
> Cheers,
> 
> Rafael.
> 
> On 08/11/15 12:00, Samuel Aiyeoribe 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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> 
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> -- 
> sent from my mobile device
> 
> Dale Kunce
> http://normalhabit.com
>