gw_states: Gleditsch-Ward (Independent States) System Membership Data...
In peacesciencer: Tools and Data for Quantitative Peace Science Research
gw_states R Documentation
Gleditsch-Ward (Independent States) System Membership Data (1816-2017)
Description
These are the independent states in Gleditsch and Ward's data.
Usage
gw_states
Format
A data frame with 216 observations on the following 5 variables.
gwcodea numeric vector for the Gleditsch-Ward country code
stateabba character vector for state abbreviation
statenamea character vector for the state name
startdatethe start date in the data
enddatethe end date in the data
Details
Data originally provided by Gleditsch with no column names. Column names
were added before some light re-cleaning in order to generate these data.
"Wuerttemberg" and "Cote D'Ivoire" in the statename column needed to be
renamed to ensure maximal compliance with CRAN, which raises notes for
every non-ASCII character that appears in its package. I do not think this
to be problematic at all and, after all, state names should never be
a basis for something like a match or merge you would do in
countrycode.
The functions that previously used these data no longer use these data. They
instead use a copy of the data in the isard package I also maintain.
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.
peacesciencer documentation built on Aug. 8, 2025, 6:13 p.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
| gw_states | R Documentation |
Gleditsch-Ward (Independent States) System Membership Data (1816-2017)
Description
These are the independent states in Gleditsch and Ward's data.
Usage
gw_states
Format
A data frame with 216 observations on the following 5 variables.
gwcodea numeric vector for the Gleditsch-Ward country code
stateabba character vector for state abbreviation
statenamea character vector for the state name
startdatethe start date in the data
enddatethe end date in the data
Details
Data originally provided by Gleditsch with no column names. Column names
were added before some light re-cleaning in order to generate these data.
"Wuerttemberg" and "Cote D'Ivoire" in the statename column needed to be
renamed to ensure maximal compliance with CRAN, which raises notes for
every non-ASCII character that appears in its package. I do not think this
to be problematic at all and, after all, state names should never be
a basis for something like a match or merge you would do in
countrycode.
The functions that previously used these data no longer use these data. They instead use a copy of the data in the isard package I also maintain.
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.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.