The centroids can be found [http://worldmap.harvard.edu/data/geonode:country_centroids_az8 here]. In order to be able to calculate distances by road through OpenStreetMap, we need identify the closest town to this centroid. | The centroids can be found [http://worldmap.harvard.edu/data/geonode:country_centroids_az8 here]. In order to be able to calculate distances by road through OpenStreetMap, we need identify the closest town to this centroid. |