Simplified version of str(poli): (real dataset includes 36 variables)
$ country : chr [1:15846] "Afghanistan " "Afghanistan
" "Afghanistan " "Afghanistan " ...
$ year : num [1:15846] 1800 1801 1802 1803 1804 ...
$ democ : num [1:15846] 1 1 1 1 1 1 1 1 1 1 ...
$ autoc : num [1:15846] 7 7 7 7 7 7 7 7 7 7 ...
$ polity : num [1:15846] -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 ...
$ polity2 : num [1:15846] -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 ...
- attr(*, "label.table")=List of 36
..$ country : NULL
..$ year : NULL
..$ democ : NULL
..$ autoc : NULL
..$ polity : NULL
..$ polity2 : NULL
-----
Diogenas