Reference

Basics Basic functionality
state_panel()	Create state panel data
sfind()	Lookup country codes or names
plot_missing() missing_info()	Visualize missing and non-proper cases for state panel data
Helper functions Miscellaneous utility functions
id_date_sequence()	Identify date sequences
states states-package	State system membership
country_names()	Country names
prettyc()	Shorten country names
parse_date()	Parse date
compare() report()	Compare two statelists
Data The COW and G&W independent states lists are included in the package, as well as Combined Polity scores as an example for plot_missing().
cowstates	Correlates of War list of independent states
gwstates	Gleditsch and Ward list of independent states
polity	Polity IV combined Polity scores