I have the map of Cambodia(map) and the economic land concessions(elc). In trying to find the proportion of district covered by land concesions, I need the area variable. But when I create the variable as
$area, there are some entries that are
NULL - it is the case for both layers. I have tried 'fix geometries.' It mostly fixed the problem for elc layer but still is
NULL for one layer as following. Smaller piece and the bigger piece are seperate entries but area is calculated only for the small area.
The area calculation issue is not fixed at all for the elc layer. What is the next thing I could try to fix this problem?
I am following the steps from this link: Finding overlay percentage between two polygon shapefiles
Data using: GEO2_KH (Cambodia shapefile) https://international.ipums.org/international/gis_harmonized_2nd.shtml ELCs: All economic land concessions shapefile https://data.opendevelopmentcambodia.net/dataset/economiclandconcessions