coalitions (version 0.6.24)

pool_surveys: Obtain pooled survey during specified period

Description

Per default, pools surveys starting from current date and going 14 days back. For each pollster within the defined time-frame, only the most recent survey is used.

Usage

pool_surveys(
  surveys,
  last_date = Sys.Date(),
  pollsters = c("allensbach", "emnid", "forsa", "fgw", "gms", "infratest", "dimap",
    "infratestdimap", "insa"),
  period = 14,
  period_extended = NA,
  corr = 0.5,
  weights = NULL
)

Arguments

surveys

A tibble containing survey results for multiple pollsters as returned by get_surveys.

last_date

Only surveys in the time-window from last_date to last_date - period will be considered for each pollster. Defaults to current date.

pollsters

Character vector of pollsters that should be considered for pooling.

period

See last_date argument.

period_extended

Optional. If specified, all surveys in the time-window from last_date - period_extended to last_date - period will also be considered for each pollster, but only after down-weighting them by halving their true sample size.

corr

Assumed correlation between surveys (of different pollsters). Defaults to 0.5.

weights

Additional weights for individual surveys.

Examples

library(coalitions)
library(dplyr)
latest <- get_latest(surveys_sample)
pool_surveys(surveys_sample, last_date=as.Date("2017-09-02"))