8-5. Add the remaining NUTS levels¶
One level of boundaries works, but the experience is much better when the
detail follows the zoom - country -> region -> sub-region etc. Add the three finer NUTS levels the same way.
Each new source takes the next level number automatically, so adding them
in this order gives you levels 0, 1, 2 and 3.
- Add a statistics source for NUTS 1 (major regions):
https://esa-apex.s3.eu-west-1.amazonaws.com/APEX-example-data/HI-RES-NUTS/stats.esa_worldcover_2021.nuts_2024.epsg4326.level01.fgb
- Add a statistics source for NUTS 2 (basic regions):
https://esa-apex.s3.eu-west-1.amazonaws.com/APEX-example-data/HI-RES-NUTS/stats.esa_worldcover_2021.nuts_2024.epsg4326.level02.fgb
- Add a statistics source for NUTS 3 (small regions):
https://esa-apex.s3.eu-west-1.amazonaws.com/APEX-example-data/HI-RES-NUTS/stats.esa_worldcover_2021.nuts_2024.epsg4326.level03.fgb
- View the result. Open the Preview, select the Statistics tab in the panel and click a country on the map. Now click on a region — as the zoom increases the Explorer switches to the finer NUTS levels, presenting a new set of polygons at the tier below at each level. Use the breadcrumbs on the statistics panel to navigate back up and down through the hierarchy.
!!! tip "Fixing a level"
If you add the files out of order, or delete one and re-add it, the levels
can end up wrong. Edit the statistics source and set the level by hand,
or correct the level values in the per-layer {JSON} editor. Levels
should run from 0 upwards with no gaps and no duplicates.