I’m using the rnaturalearth and rnaturalearthdata packages a lot for plotting all sorts of data on maps. All different groups are easy for visualizing subsets of data.
Besides these polygons there are 60-something other columns available with a lot of useful information. I’m looking for a description of these other columns. Is this available somewhere?
Eg. the income_grp column. What do these 5 different values mean?
On Gapminder - income levels there is something similar available, but with just 4 different values.
I have no preference for either one split in income as long as I’m able to explain it to others what I used in my plots.
Does anyone know this?