polarization {agrmt} R Documentation

## Calculate polarization

### Description

Calculates polarization, based on measure of agreement A

### Usage

polarization(V, old = FALSE)

### Arguments

 V A frequency vector old Specify old=TRUE to use the deprecated algorithm for agreement A

### Details

This function calculates polarization by re-scaling agreement A introduced by Cees van der Eijk. Whereas agreement A ranges from -1 to 1, polarization ranges from 0 to 1. If all observations are in the same category, polarization is 0. With half the observations in one category, and half the observations in a different (non-neighbouring) category, polarization is 1. Polarization is 0.5 for a uniform distribution over all categories.

### Value

The function returns a polarization score

### Author(s)

Didier Ruedin

agreement
V <- c(30,40,210,130,530,50,10)