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igoR provides tools for searching, extracting and recoding the Intergovernmental Organizations Database (version 3), distributed by the Correlates of War Project (Pevehouse et al. 2020).
The IGO-year data set contains 534 IGOs recorded from 1816 to 2014. The package also includes country-year membership data, state system data (Correlates of War Project 2017) and functions for deriving dyad-year joint membership results.
[!NOTE]
This package is stable and maintained on a best-effort basis. I currently prioritize CRAN compatibility, bug fixes and regressions over new features.
Install igoR from CRAN:
install.packages("igoR")Check the documentation for the development version at https://dieghernan.github.io/igoR/dev/.
You can install the development version from GitHub:
pak::pak("dieghernan/igoR")Alternatively, you can install igoR using r-universe:
# Install igoR from r-universe.
install.packages(
"igoR",
repos = c(
"https://dieghernan.r-universe.dev",
"https://cloud.r-project.org"
)
)Search for 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
Extract the members 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 in the latest available year.
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)
Hernangómez D (2026). igoR: Access the Intergovernmental Organizations (IGO) Database. doi:10.32614/CRAN.package.igoR. https://dieghernan.github.io/igoR/.
For LaTeX users, a BibTeX entry is:
@Manual{R-igoR,
title = {{igoR}: Access the Intergovernmental Organizations ({IGO}) Database},
doi = {10.32614/CRAN.package.igoR},
author = {Diego Hernangómez},
year = {2026},
version = {1.0.3},
url = {https://dieghernan.github.io/igoR/},
abstract = {Provides tools for searching, extracting and recoding the Intergovernmental Organizations (IGO) Database (version 3), distributed by the Correlates of War Project <https://correlatesofwar.org/>. Includes IGO-year and country-year membership data, state system data and functions for deriving dyad-year joint membership results. For a description of the data, see Pevehouse, J. C. et al. (2020) <doi:10.1177/0022343319881175>.},
}These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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