How to highlight specific national boundary on your map

This article will help you highlight a specific country's national boundary. Any map style that uses the MapTiler Planet tileset could use attributes included in the `boundary` layer. New attributes for highlighting national boundaries were announced in OpenMapTiles v3.12.

In attributes (in step 6) you can use the ISO A3 values of the country (e.g. CHE, FRA, CZE, ...). You can also find the required value in the Inspect mode (top right corner - change from Map to Inspect).

Highlight a national boundary step-by-step:

1. Open Advanced editor for map
2. Select the `border_country` style layer
3. Clone it
4. Rename it to `border_highlight`
5. Move the `border_highlight` under the `border_country` style layer
6. Edit the Filter to `any filter matches` with the conditions: 

   • adm0_r == CHE

   • adm0_l == CHE

7. Change the color and width

   • rgba(0, 255, 0, 1)

   • 1 1
     5 3
     10 5

8. Save and Publish the map

Highlight a national boundary step-by-step (images):

• Steps 2, 3

• Steps 4, 5, 6

• Step 7

Final visualization

After Publishing the map you can share it or embed it into your website.

Useful links

How to edit and export map style: Advanced customization
How to highlight a specific country on your map

MapTiler Planet Schema