allocation: Largest Remainder Method

In JaehyunSong/PRcalc: A Proportional Representation Calculator

Largest Remainder Method

Description

Largest Remainder Method

Usage

allocation(x, m, method, extra = NULL)

Arguments

x	a data.frame or tibble with two columns. The first and second column represents names of parties and numbers of votes, respectively.
m	a numeric value of district magnitude.
method	a character string giving a method for computing seat allocation. See "Allocation methods" section.
extra	a numeric vector of length m. If method is "custom divisor" ("cd") or "custom quota" ("cq"), this parameter is mandatory. See "About custom methods" section.

Value

A tibble object with two columns.

Allocation methods

• Highest average method

  • "d'hondt" ("dt") or "jefferson": D'hondt / Jefferson method

  • "adams" or "cambridge": Adams / Cambridge method

  • "sainte-lague" ("sl") or "webster": Sainte-Laguë / Webster method

  • "modified sainte-lague" ("msl"): Modified Sainte-Laguë method

  • "danish": Danish method

  • "imperiali": Imperiali method

  • "hungtington-hill" ("hh"): Huntington-Hill method

  • "dean": Dean method

  • "ad": alpha-divergence. extra is mandatory.

  • "custom divisor" ("cd"): Custom divisor. extra is mandatory.

• Largest reminder method

  • "hare-niemeyer" ("hn" or "hare"): Hare-Niemeyer quota

  • "droop": Droop quota

  • "hagenbach-bischoff" ("hb"): Hagenbach-Bischoff quota

  • "imperiali quota" ("iq"): Imperiali quota

  • "custom quota" ("cq"): Custom quota. extra is mandatory.

Examples

sample_data <- data.frame(Party = c("Party A", "Party B", "Party C", "Party D"),
                          Votes = c(53000, 25000, 16600, 5400))

sample_data

# Magnitude = 10, Hare-Niemeyer quota
allocation(x = sample_data, m = 10, method = "hare")

# Magnitude = 10, D'hondt method
allocation(x = sample_data, m = 10, method = "dt")

# Custom divisor: 1.4, 3, 5, 7, ... (identical to Modified Sainte-Laguë method)
allocation(x = sample_data, m = 10, method = "custom divisor",
           extra = c(1.4, seq(3, 19, by = 2)))

JaehyunSong/PRcalc documentation built on April 17, 2024, 1:23 p.m.