README.qmd

---
title: PRcalc
subtitle: Allocation! Measuring disproportionality! Decompsition! and Visualization!
author: 
  - name: Jaehyun Song
    affiliations: Kansai University
    email: song@kansai-u.ac.jp
    url: https://www.jaysong.net/
  - name: Yuta Kamahara
    affiliations: Yokohama National University
    email: y.kamahara@gmail.com
    url: https://sites.google.com/site/yutakamaharapolisci/
date-modified: today
---

![](https://www.jaysong.net/PRcalc/figs/prcalc.png){fig-align="center" width=200px}

:::{.callout-important}
## {PRcalc} is under development!!

Please use {PRcalc} ONLY for testing purposes.
:::

## Description

  {PRcalc} is an R package that calculates  the seat allocation by selecting the highest average methods for the proportional representation system and computes the degree of **disproportionality**. It also enables to calculate the seat allocation by choosing the several methods  of seat allocation for territorially defined constituencies and computes the degree of **malapportionment**. Notably, this package can be utilized to decompose $\alpha$-divergence for *inter-* and *intra-*coalition disproportionality as well as *inter-* and *intra-*state malapportionment.

## Installation

```r
# If {remotes} is not installed, install {remotes} package.
remotes::install_github("JaehyunSong/PRcalc")
```