Hi, I'm a new beginner of R.I want to use WDI to download global GDP per capita (constant 2015 US$) , like this figure. But I don't know how to define "country" in wdi. I only get all country of GDP, but I can't get a global data.
Thank you so much,williaml.I know how to catch the country's data that I want by WDI package.The problem is that I want to figure out how can I ONLY catch the global average GDP per capita data,not only countries.