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3---
4
5| | Count | Map |
6|---|---|---|
7| Trips | `= length(rows)` | [flights.geojson](flights.geojson) |
8| Countries | `= length(unique(filter(flat(rows.tags), (t) => startswith(t, "country/"))))` | [countries.geojson](countries.geojson) |
9| Cities | `= length(unique(filter(flat(rows.tags), (t) => startswith(t, "city/"))))` | [cities.geojson](cities.geojson) |
7| Trips | `= length(rows)` | [map](flights.geojson) |
8| Countries | `= length(unique(filter(flat(rows.tags), (t) => startswith(t, "country/"))))` | [map](countries.geojson) |
9| Cities | `= length(unique(filter(flat(rows.tags), (t) => startswith(t, "city/"))))` | [map](cities.geojson) |
10
11## countries
12
13```dataview
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