I am looking for open data on the Sierra Leone Ethnic groups. Preferably in Shapefile format or any other format that can be used on a map.
So far I created a map with the districts and their population (population was just for testing purposes) in R. Now I want to overlay these districts with the Ethnic groups located in Sierra Leone. Such as show in this image.
My search on the internet didn't come up with any Shapefiles regarding Ethnic Groups in Sierra Leone. Maybe someone knows where I can find these?
Also if it's not to difficult and time consuming I can try to create one myself... Although some advice on this will be very helpful!