Designing panel dataset in R

[@willizm5905]

Thanks a mil you deserve Nobel Prize

[@abielwubet2587]

Thank You Very Much. it is Really Useful.

[@nassarx]

Hi, thank you for this exciting tutorial; I really liked it. However, the code link is invalid. Could you please update it?

[@lazarskiopencourses4059]

Hi, posting it below. But please keep in mind all the names etc. were designed for my specific purposes
#1 GINI coefficient
#2 GDP per capita growth rate
#3 Gross capital formation
data