In a city-sized area, I'm looking for buildings that have more levels than 12. I know that those are tagged with building:levels (untagged buildings are not interesting in this case). I have been trying to get them from Overpass Turbo, but AFAIK there's no way to say "find value > 12", and matching way["building:levels"~"^[234][0-9]$"]; times out (and only matches 20-49 anyway).

Is this the right tool? If so, how should I do this? If not - should I perhaps get an OSM extract and process it as XML with some other tool?

asked 26 Feb '16, 10:18

Piskvor's gravatar image

Piskvor
1.3k91534
accept rate: 37%

@mmd: While fiddling with the OpT query, I have found a working solution - I had a typo in there :(

(26 Feb '16, 11:29) Piskvor
2

BTW: Here's a link to the respective feature request: https://github.com/drolbr/Overpass-API/issues/78

(26 Feb '16, 11:36) mmd

I have found a way to hack around this in Overpass Turbo. Apparently, it's not possible to directly compare numbers, but it's possible to use regex - match "100-499" or match "20-99" or match "13-19". It's still not foolproof (fortunately, this key is unitless), but works with buildings up to 499 floors:

[out:json][timeout:25];
// gather results
(
  // 100-499
  way["building:levels"~"^[1234][0-9]{2}$"]({{bbox}});
  // 20-99
  way["building:levels"~"^[23456789][0-9]$"]({{bbox}});
  // 13-19
  way["building:levels"~"^1[3-9]$"]({{bbox}});
);
// print results
out body;
>;
out skel qt;

(Yes, I'm aware that with regex, I now have two problems ;))

permanent link

answered 26 Feb '16, 11:33

Piskvor's gravatar image

Piskvor
1.3k91534
accept rate: 37%

edited 26 Feb '16, 12:14

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question asked: 26 Feb '16, 10:18

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last updated: 26 Feb '16, 12:14

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