[OSM-talk] Overpass API - Fetching countries, their capitals, and their borders

[Wayne Emerson, Jr.]

He wasn't asking for every town on earth. Just every country's border, 
and every country's capitol. I am a noob too so can't answer his 
question. But I did run the wizard with "admin_level=2 and type:node" 
and got 3,988 nodes. Which begs the question, why does Argentina have 
dozens of admin level 2 nodes? I am guessing around 80 or so.

On 8/13/2019 6:30 PM, Warin wrote:
> On 14/08/19 07:41, L??o El Amri via talk wrote:
>> Hello,
>>
>> I'm trying to fetch countries, their borders, and their capitals through
>> Overpass API, but the server never replies to me (With a timeout:3600
>> setting, the server reply with a 502 error after a while).
>> I'm only a beginner with this API, so maybe my request is not efficient:
>>
>> (
>> ???? node[place=city];
>> ???? node[place=town];
>> )->.a;
>> rel[boundary=administrative][admin_level=2]->.b;
>> (
>> ???? node[place=country];
>> ???? node.a[capital=yes];
>> ???? way[boundary=administrative][admin_level=2];
>> ???? .b;
>> ???? .b >;
>> )->.o;
>> .o out body;
>>
>> What am I doing wrong ? (Should I use another tool for this purpose ?)
>>
>
> Too much data? So it times out.
>
> You are asking for every node of;
>
> city 19,930
>
> town 111,981
>
> country 221
>
> And then boundaries as well. 29,752
>
> The numbers I got from taginfo.. did not bother with separating nodes 
> etc.
>
> I think the boundaries will cause problems - lots of nodes and ways in 
> there as well as the relations.
>
> Suggestions? Do it in small sections.
>
> Get the cities and countries as one item and see if that works. Save 
> the result for later merging.
>
> Get the boundaries for a small section of the world .. with few 
> boundaries and see if that works.
>
>
>
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