Is there a way to geolocate ISO 3166-1 alpha-3 codes (see https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes) and get the centroid of the item ?
I would like to place a marker (a disk proportionnal to a quantity) for different countries indicated by the ISO 3166.
I work with python and have tested geopy.geocoders but without success.
Any help welcomed
It sounds like you want the geographic center of countries. This type of data is commonly avaliable and here is one such place you can download it.
Here is a second resource which does include both Hong Kong snd Taiwan.