[OSM-dev] Problem with XAPI and ref based search

[Paul Norman]

The dev API is an entirely separate API with its own data.

 

As XAPI is an extension to the standard API, it does does support the
standard object by ID calls, e.g.
http://jxapi.openstreetmap.org/xapi/api/0.6/relation/2202120

 

 

From: gregory.bataille at gmail.com [mailto:gregory.bataille at gmail.com] On
Behalf Of Grégory Bataille
Sent: Friday, November 29, 2013 11:51 PM
To: Paul Norman
Cc: dev at openstreetmap.org
Subject: Re: [OSM-dev] Problem with XAPI and ref based search

 

oh god. I must have missed some combination when I had this idea. so what
happens is that the data behind the dev OSM API seems partial. so when I
started with overpass to do a complex query, the then OSM base API did not
find the elements by id! the Prod API does though.

I don't think the XAPI layer can do a search by ID (at least I haven't found
one).

 

but not I can finally tie things together. Thanks for putting me back on
track!

 

Cheers

 

On Sat, Nov 30, 2013 at 8:26 AM, Grégory Bataille <gbataille.dev at gmail.com>
wrote:

that's exactly what I had suspected at some point, but I did not make it
work then either, let me retry that once I'm fully awaken and I'll get back
to you. Thanks for the quick answer.

 

On Sat, Nov 30, 2013 at 4:16 AM, Paul Norman <penorman at mac.com> wrote:

Ref is a reference to an object ID, not a ref tag. Instead of
/api/0.6/relation[ref=2202120] you want /api/0.6/relation/2202120.

 

I’m not 100% sure if the overpass compatibility layer will correctly handle
the latter syntax.

 

From: Grégory Bataille [mailto:gbataille.dev at gmail.com] 
Sent: Friday, November 29, 2013 4:42 AM
To: dev at openstreetmap.org
Subject: [OSM-dev] Problem with XAPI and ref based search

 

hello everybody,

 

I have been trying to use OSM data for a while. basically, first, I'd like
to get the admin boundaries of France.

I start by asking XAPI to give me the France admin_level 2 object like so:

http://www.overpass-api.de/api/xapi?relation[boundary=administrative][admin_
level=2][name=France]
<http://www.overpass-api.de/api/xapi?relation%5bboundary=administrative%5d%5
badmin_level=2%5d%5bname=France%5d> 

 

this returns me the object, which contains among other things:

<member type="relation" ref="79981" role="outer"></member>

<member type="relation" ref="2202120" role="outer"></member>

<member type="relation" ref="2627308" role="outer"></member>

<member type="relation" ref="2177258" role="outer"></member>

 

so I want to dig down into these relations of course to get to the details
(ways and nodes). But I can't:

http://www.overpass-api.de/api/xapi?relation[ref=2202120]
<http://www.overpass-api.de/api/xapi?relation%5bref=2202120%5d>  or

http://www.overpass-api.de/api/xapi?*[ref=2202120]
<http://www.overpass-api.de/api/xapi?*%5bref=2202120%5d> 

won't return anything. I have been spending a fair amount of time on this
and I can't figure it out.

 

Would you please be able to point me in the right direction?

 

thanks.

 

 

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