How to filter by user in overpass turbo

Question

I want to see a particular feature mapped by a given user, and the opposite (mapped by other users different to a given one). However, I see that the user value is in the Meta section, and I cannot write a query to filter by this criterion.

This is the original query, to get all monitoring stations in Colombia:

[out:xml][timeout:25];
area[name="Colombia"][admin_level=2][boundary=administrative]->.searchColombia;
(
  nwr["man_made"="monitoring_station"](area.searchColombia);
);
out meta;
>;
out meta qt;

However, I know that the user dcruizr has worked a lot on this, and I do not want to see her contributions. I was thinking about something like:

[out:xml][timeout:25];
area[name="Colombia"][admin_level=2][boundary=administrative]->.searchColombia;
(
  nwr["man_made"="monitoring_station"][user!="dcruizr"](area.searchColombia);
);
out meta;
>;
out meta qt;

However, this does not do any filter on the data. How can I write a query to filter by user?

Accepted Answer

As an update to DaveF's answer, you now can negatively filter for users:

area[name=Colombia][admin_level=2];
nwr[man_made=monitoring_station](area)(if:user()!="dcruizr");
out meta;
>;
out meta qt;

The if conditional allows for free-form boolean operations. The only restriction is that it only works in combination with another conditional, because one otherwise could too easily ask accidentally for the whole planet.

Answer 2

4

It's irritating we can't negate user's input directly in overpass.

The Data variable is used so the search for the user is only performed on the monitoring_stations returned & not the whole of Columbia, speeding it up slightly.

Note user uses a colon, not an equals sign.

https://overpass-turbo.eu/s/1fjq

area[name=Colombia][admin_level=2];
(
 nwr[man_made=monitoring_station](area)->.Data;
 -nwr.Data(user:dcruizr);
);
out meta;
>;
out meta qt;

permanent link

answered 22 Jan '22, 20:45

DaveF
3.3k●84●98●133
accept rate: 16%

edited 22 Jan '22, 20:45

1

Thank you for your answer. I'm just adding an extra answer, because there are more semantics available now.

(22 Jan '22, 21:15) Roland Olbricht

How to filter by user in overpass turbo

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