create_leaderdyadyears {peacesciencer}

Create leader-dyad-years from the Archigos data

Description

create_leaderdyadyears() allows you to created leader dyad-year data from the Archigos data first introduced and described by Goemans et al. (2009).

Usage

create_leaderdyadyears(directed = TRUE, system = "gw")

Arguments

directed

optional, defaults to TRUE. If TRUE, the function returns so-called "directed" leader dyad-year data. If FALSE, the function returns non-directed data where the state codes for the second leader are all greater than the state codes for the second leader.

system

a character specifying whether the user wants Correlates of War state-years ("cow") or Gleditsch-Ward ("gw") state-years. Gleditsch-Ward is the default.

Details

This is a complete and universal leader dyad-year data frame for all possible dyadic leader pairings from 1870 to 2015. This has several implications. First: these data are enormous. The output is over 2 million rows long! Second: the time required to create these data from scratch would take too long for a normal function call. This amounts to an unholy combination of data that are too large for CRAN's disk space restrictions (5 MB) and too time-consuming to do from scratch every time. Thus, the data are pre-generated and stored remotely. Check download_extdata() for more information.

Value

create_leaderdyadyears() takes remote data available for separate download and returns a complete leader dyad-year data frame for all leaders, and all possible dyads, from 1870 to 2015.

Author(s)

Steven V. Miller

References

Goemans, Henk E., Kristian Skrede Gleditsch, and Giacomo Chiozza. 2009. "Introducing Archigos: A Dataset of Political Leaders" Journal of Peace Research 46(2): 269–83.

Examples

## Not run: 
# download_extdata()
# ^ make sure you've run this first.
# default is directed
create_leaderdyadyears()

# non-directed
create_leaderdyadyears(directed = FALSE)

## End(Not run)