get_probabilities {coalitions} | R Documentation |
Wrapper for calculation of coalition probabilities from survey
Description
Given a table with simulations in the rows and coalitions in the columns, this function returns the coalition probabilities for a specified coalition, by default excluding superior coalitions first
Usage
get_probabilities(
x,
coalitions = list(c("cdu"), c("cdu", "fdp"), c("cdu", "fdp", "greens"), c("spd"),
c("spd", "left"), c("spd", "left", "greens")),
nsim = 1e+05,
distrib.fun = sls,
seats_majority = 300L,
seed = as.numeric(now()),
correction = NULL
)
Arguments
x |
A table containing one row per survey and survey information in
long format in a separate column named |
coalitions |
A list of coalitions for which coalition probabilities should
be calculated. Each list entry must be a vector of party names. Those names
need to correspond to the names in |
nsim |
number of simulations |
distrib.fun |
Function to calculate seat distribution. Defaults to
|
seats_majority |
The number of seats needed to obtain majority. |
seed |
sets seed |
correction |
A positive number. If not |
See Also
Examples
library(coalitions)
library(dplyr)
# get the latest survey for a sample of German federal election polls
surveys <- get_latest(surveys_sample)
# calculate probabilities for two coalitions
probs <- get_probabilities(surveys,
coalitions = list(c("cdu", "fdp"),
c("spd", "left", "greens")),
nsim = 100) # ensure fast runtime with only 100 simulations
probs %>% tidyr::unnest("probabilities")