proporz (version 1.5.1)

district_winner_matrix: Find which party has the most votes in a district

Description

Create a logical matrix that shows whether a party got the most votes in a district or not.

Usage

district_winner_matrix(votes_matrix, district_seats = 1L)

Value

logical matrix with the same dimensions and names as votes_matrix

Arguments

votes_matrix

Vote count matrix with votes by party in rows and votes by district in columns.

district_seats

Vector defining the number of seats per district. Must be the same length as ncol(votes_matrix). Values are name-matched to votes_matrix columns if both are named. If a single value is supplied (like 1 as default), it is used as the number of seats for every district.

Details

If two or more parties are tied and there are not enough seats for each tied party, the matrix value is NA.

Examples

(vm = matrix(c(60,30,0,20,10,30), nrow = 3, dimnames = list(1:3, c("A", "B"))))

district_winner_matrix(vm)

# NA values if parties are tied (here in district B)
vm[1,2] <- 30
district_winner_matrix(vm)

# No NA values for tied parties if enough seats are available
district_winner_matrix(vm, c(1, 2))