Query multiple values for specific tags

Question

Hello,

I'm trying to query all the "mall" and "department_store" for the key "shop" using the Overpass API and the following query:

[out:json];
area[name="London"];
nwr['shop'='department_store'](area);
out center;
nwr['shop'='mall'](area);
out center;

This however gives me only department_store because I put it first. So, basically it returns only the first shop I ask.

I also tried with the pyrosm package from Python. When I query for all shops it returns around 3330 records, but when I query to get both all shops and some amenities the records are less which doesn't make sense.

Any help please? :)

Answer 1

4

The result of the first shop query is stored in the default set, which the second query is written to use for the search area. Storing the area results to a named set makes it available for multiple queries:

[out:json];
area[name="London"]->.search;
nwr['shop'='department_store'](area.search);
out center;
nwr['shop'='mall'](area.search);
out center;

In general, any statement without a named result set is stored in the default set, and any statement that takes an input (like area) will use the default set if a named set is not specified.

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answered 19 Feb '21, 13:03

maxerickson
12.7k●10●83●176
accept rate: 32%

edited 19 Feb '21, 13:44

This worked! Thanks a lot :)

(19 Feb '21, 15:04) Katerina_Kourou

Query multiple values for specific tags

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