recodepolity: Recode Polity IV scores

In felixhaass/recodepolity: Recodes Polity IV scores according to Vreeland (2008) and Pluemper and Neumayer (2010)

Description

Calculates XPOLITY (Vreeland 2008) scores and corrected interregnum scores (Pluemper and Neumayer 2010) for a current Polity IV dataset.

Usage

recodepolity(file = "http://www.systemicpeace.org/inscr/p4v2013.sav",
  option = "all")

Arguments

file	Path or URL to Polity IV data frame. Defaults to the URL for the current (2013) Polity IV .sav file.
option	Takes the values all, xpolity, inter, or combined. Default is all. all calculates both XPOLITY and corrected interregnum scores. xpolity only calculates XPOLITY scores; inter only calculates interregnum scores. combined calculates XPOLITY scores based on the corrected interrengum scores.

Details

Depending on which option the user provides different columns are added to the dataset given by the file argument.

all adds the columns xrcomp_xpol, xropen_xpol, xconst_xpol, parreg_xpol, parcomp_xpol, xpolity. The first five columns are the weighted components of Polity IV, calculated according to Polity IV coding manual and Pluemper's (2008) Stata code. xpolity represents the combined components without parreg_xpol and parcomp_xpol. The all option also adds the columns polity2min, polity2max, and polity2inter, each representing Pluemper and Neumayer's (2010) different options of recoding the polity2 intrregnum periods (for details see Pluemper and Neumayer 2010).

The option xpolity only adds the XPOLITY columns; the option inter only adds the interregnum colums.

The option combined adds columns with the suffixes _min, _max, _inter to the Polity IV subcomponents as well as the final xpolity score. This provides three different versions of the XPOLITY score, dependent on the different recalculations (min, max, inter) from Pluemper and Neumayer.

Value

Polity IV data frame with additional columns. Number & names of columns depend on user options (see above).

References

Marshall, Monty G., Keith Jaggers, and Ted Robert Gurr. 2010. "Polity IV project. Political regime characteristics and transitions, 1800-2010. Dataset user's manual." http://www.systemicpeace.org/inscr/p4manualv2010.pdf.

Pluemper, Thomas, and Eric Neumayer. 2010. "The level of democracy during interregnum periods: Recoding the polity2 score." Political Analysis 18(2): 206-226. http://pan.oxfordjournals.org/content/18/2/206

Vreeland, James Raymond. 2008. "The effect of political regime on civil war. Unpacking anocracy." Journal of Conflict Resolution 52(3): 401-425. http://jcr.sagepub.com/content/52/3/401

Examples

## Not run: 
# basic usage; assigns the recoded Polity dataset to the data frame 'polity'
polity <- recodepolity()

## End(Not run)

felixhaass/recodepolity documentation built on May 20, 2019, 3:31 p.m.