Create a categorical constraint

Add a World Cover constraint to your AGB layer so users can filter the biomass values by land cover class.

1. Edit the AGB layer card and open the Constraints tab.

2. Add the following World Cover TIF, which covers the same area as the AGB data:

   https://esa-apex.s3.eu-west-1.amazonaws.com/APEX-example-data/constraints/FCM_Europe_demo_2023_AGB-esa_worldcover_2021.tif
   

3. Select Populate categories from COG.

4. Edit the category labels to match the World Cover class names (Tree cover, Shrubland, Grassland, …).
5. Save the layer card and preview. The AGB layer now has a set of land-cover checkboxes in its constraint panel.