R/data-house.R

In OpenIntroStat/openintro: Datasets and Supplemental Functions from 'OpenIntro' Textbooks and Labs

#' United States House of Representatives historical make-up
#'
#' The make-up of the United States House of Representatives every two years
#' since 1789. The last Congress included is the 112th Congress, which
#' completed its term in 2013.
#'
#'
#' @name house
#' @docType data
#' @format A data frame with 112 observations on the following 12 variables.
#' \describe{
#'   \item{congress}{The number of that year's Congress}
#'   \item{year_start}{Starting year}
#'   \item{year_end}{Ending year}
#'   \item{seats}{Total number of seats}
#'   \item{p1}{Name of the first political party}
#'   \item{np1}{Number of seats held by the first political party}
#'   \item{p2}{Name of the second political party}
#'   \item{np2}{Number of seats held by the second political party}
#'   \item{other}{Other}
#'   \item{vac}{Vacancy}
#'   \item{del}{Delegate}
#'   \item{res}{Resident commissioner}
#'   }
#' @source Party Divisions of the House of Representatives, 1789 to Present.
#' \url{https://history.house.gov/Institution/Party-Divisions/Party-Divisions}.
#' @keywords datasets
#' @examples
#'
#' library(dplyr)
#' library(ggplot2)
#' library(forcats)
#'
#' # Examine two-party relationship since 1855
#' house_since_1855 <- house |>
#'   filter(year_start >= 1855) |>
#'   mutate(
#'     p1_perc = 100 * np1 / seats,
#'     p2_perc = 100 * np2 / seats,
#'     era = case_when(
#'       between(year_start, 1861, 1865) ~ "Civil War",
#'       between(year_start, 1914, 1918) ~ "World War I",
#'       between(year_start, 1929, 1939) ~ "Great Depression",
#'       between(year_start, 1940, 1945) ~ "World War II",
#'       between(year_start, 1960, 1965) ~ "Vietnam War Start",
#'       between(year_start, 1965, 1975) ~ "Vietnam War Escalated",
#'       TRUE ~ NA_character_
#'     ),
#'     era = fct_relevel(
#'       era, "Civil War", "World War I",
#'       "Great Depression", "World War II",
#'       "Vietnam War Start", "Vietnam War Escalated"
#'     )
#'   )
#'
#' ggplot(house_since_1855, aes(x = year_start)) +
#'   geom_rect(aes(
#'     xmin = year_start, xmax = lead(year_start),
#'     ymin = -Inf, ymax = Inf, fill = era
#'   )) +
#'   geom_line(aes(y = p1_perc, color = "Democrats")) + # Democrats
#'   geom_line(aes(y = p2_perc, color = "Republicans")) + # Republicans
#'   scale_fill_brewer(palette = "Pastel1", na.translate = FALSE) +
#'   scale_color_manual(
#'     name   = "Party",
#'     values = c("Democrats" = "blue", "Republicans" = "red"),
#'     labels = c("Democrats", "Republicans")
#'   ) +
#'   theme_minimal() +
#'   ylim(0, 100) +
#'   labs(x = "Year", y = "Percentage of seats", fill = "Era")
"house"