States (Gleditsch-Ward System)
gw_system.RdThese are the independent states and microstates in the Gleditsch-Ward system.
Usage
data(gw_system)Format
A data frame with the following 6 variables.
gwcodea numeric vector for the Gleditsch-Ward state code
gw_abba character vector for the state abbreviation
gw_namea character vector for the state name
microstatea numeric vector for whether the state is a microstate. 1 = microstate. 0 = not a microstate
starta date for system entry
enda date for system exit
Details
The end column is current as of Dec. 31, 2020. That date is reflected in the
end column for states still active today.
Country names for Württemberg, São Tomé and Príncipe, and Côte d'Ivoire, have manual fixes communicating what the raw data wanted to communicate in ISO-8859-1 (Latin-1) encoding. Mayeul Kauffmann raised this issue on Github, and it's an easy fix, but it's worth reiterating that this fix is more cosmetic or aesthetic than it is practical or functional. You should not ever lean on a country name for serious data management, and the admitted gaudiness of this encoding issue is at most an eyesore in the original data.
References
Gleditsch, Kristian S. and Michael D. Ward. 1999. "A Revised List of Independent States since the Congress of Vienna." International Interactions 25(4): 393–413.
Examples
str(gw_system)
#> tibble [239 × 6] (S3: tbl_df/tbl/data.frame)
#> $ gwcode : num [1:239] 2 20 31 40 41 41 42 51 52 53 ...
#> $ gw_abb : chr [1:239] "USA" "CAN" "BHM" "CUB" ...
#> $ gw_name : chr [1:239] "United States of America" "Canada" "Bahamas" "Cuba" ...
#> $ microstate: num [1:239] 0 0 0 0 0 0 0 0 0 0 ...
#> $ start : Date[1:239], format: "1816-01-01" "1867-07-01" ...
#> $ end : Date[1:239], format: "2020-12-31" "2020-12-31" ...
head(gw_system)
#> # A tibble: 6 × 6
#> gwcode gw_abb gw_name microstate start end
#> <dbl> <chr> <chr> <dbl> <date> <date>
#> 1 2 USA United States of America 0 1816-01-01 2020-12-31
#> 2 20 CAN Canada 0 1867-07-01 2020-12-31
#> 3 31 BHM Bahamas 0 1973-07-10 2020-12-31
#> 4 40 CUB Cuba 0 1902-05-20 2020-12-31
#> 5 41 HAI Haiti 0 1816-01-01 1915-07-04
#> 6 41 HAI Haiti 0 1934-08-15 2020-12-31