igoR provides access to the Intergovernmental Organizations Database (v3) from the Correlates of War Project (Pevehouse et al. 2020).
The data set (v3) includes information on 534 IGOs from 1816 to 2014, plus membership information.
- Source: Intergovernmental Organizations (v3).
- Documentation and vignettes at https://dieghernan.github.io/igoR/.
The package also includes a distribution of the State System Membership data (Correlates of War Project 2017).
Installation
Install igoR from CRAN:
install.packages("igoR")Basic usage
Search an IGO by name
Search for all IGOs related to “sugar”:
library(igoR)
result_sugar <- igo_search("Sugar")| ionum | ioname | orgname | longorgname | label | sdate | deaddate | dead | integrated | replaced | igocode | version | accuracyofpre1965membershipdates | sourcesandnotes | imputed | political | social | economic |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | AMSC | African/Malgasy Sugar Council | African and Malagasy Sugar Council | African and Malagasy Sugar Council | 1966 | 1977 | 1 | 0 | 0 | NA | 2.1 | Not applicable - created 1965 or later | 0 | 0 | 0 | 1 | |
| 1920 | GLACSEC | Group of L/A & Carib. Sugar Exp. Countries | Group of Latin American and Caribbean Sugar Exporting Countries | Group of Latin American and Caribbean Sugar Exporting Countries | 1974 | 2001 | 1 | 0 | 0 | NA | 2.3 | Not applicable - created 1965 or later | 0 | 1 | 0 | 0 | |
| 3130 | ISuC | Intl Sugar Council | International Sugar Council | International Sugar Council | 1937 | 1967 | 1 | 0 | 0 | 91 | 3.0 | Within 5 years | 0 | 0 | 1 | 0 | |
| 4290 | SugU | Sugar Union | Sugar Union | Sugar Union | 1902 | 1913 | 1 | 0 | 0 | 29 | 3.0 | Completely accurate, except a few minor uncertainties | 0 | 0 | 0 | 1 |
Table 1: IGOs related to sugar
IGO members
Composition of the European Economic Community over time:
eec_code <- igo_search("EEC", exact = TRUE)
# Get founding members.
eec_init <- igo_members(eec_code$ioname, year = eec_code$sdate)| ioname | ccode | state | statenme | year | value | category | orgname |
|---|---|---|---|---|---|---|---|
| EEC | 210 | netherlands | Netherlands | 1958 | 1 | Full Membership | European Economic Community |
| EEC | 211 | belgium | Belgium | 1958 | 1 | Full Membership | European Economic Community |
| EEC | 212 | luxembourg | Luxembourg | 1958 | 1 | Full Membership | European Economic Community |
| EEC | 220 | france | France | 1958 | 1 | Full Membership | European Economic Community |
| EEC | 260 | wgermany | German Federal Republic | 1958 | 1 | Full Membership | European Economic Community |
| EEC | 325 | italy | Italy | 1958 | 1 | Full Membership | European Economic Community |
Table 2: EEC, members (1958)
# Get members at the latest available date.
eec_end <- igo_members(eec_code$ioname)| ioname | ccode | state | statenme | year | value | category | orgname |
|---|---|---|---|---|---|---|---|
| EEC | 200 | uk | United Kingdom | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 205 | ireland | Ireland | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 210 | netherlands | Netherlands | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 211 | belgium | Belgium | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 212 | luxembourg | Luxembourg | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 220 | france | France | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 230 | spain | Spain | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 235 | portugal | Portugal | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 255 | germany | Germany | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 325 | italy | Italy | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 350 | greece | Greece | 1992 | 1 | Full Membership | European Economic Community |
| EEC | 390 | denmark | Denmark | 1992 | 1 | Full Membership | European Economic Community |
Table 3: EEC, members (1992)
Recommended packages
- countrycode package for converting country names and codes across different systems (ISO3, Eurostat, World Bank, UN, FIPS/GEC, etc.).
- dplyr package for data manipulation.
Citation
Hernangómez D (2026). igoR: Access the Intergovernmental Organizations Database. doi:10.32614/CRAN.package.igoR. https://dieghernan.github.io/igoR/.
A BibTeX entry for LaTeX users:
@Manual{R-igoR,
title = {{igoR}: Access the Intergovernmental Organizations Database},
doi = {10.32614/CRAN.package.igoR},
author = {Diego Hernangómez},
year = {2026},
version = {1.0.2},
url = {https://dieghernan.github.io/igoR/},
abstract = {Tools for searching, extracting and recoding information from the Intergovernmental Organizations (IGO) Database (v3), distributed by the Correlates of War Project <https://correlatesofwar.org/>. See also Pevehouse, J. C. et al. (2020) <doi:10.1177/0022343319881175>.},
}References
Correlates of War Project. 2017. State System Membership List, V2016. https://correlatesofwar.org/data-sets/state-system-membership/.
Pevehouse, Jon CW, Timothy Nordstrom, Roseanne W McManus, and Anne Spencer Jamison. 2020. “Tracking Organizations in the World: The Correlates of War IGO Version 3.0 Datasets.” Journal of Peace Research 57 (3): 492–503. https://doi.org/10.1177/0022343319881175.