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#' Retreive Union Coverage
#'
#' The union coverage rate shows the percentage of the workforce covered by a collective
#' bargaining agreement.
#'
#' @return \code{tbl_df}
#' @references \href{https://www.epi.org/data/}{Economic Policy Institute Data Library}
#' @note Data source: CPS ORG | Hirsch and Macpherson (2003)
#' @return data frame
#' @export
#' @examples
#' if (interactive()) get_union_coverage()
get_union_coverage <- function() {
params <- list(subject="unioncov")
res <- epi_query(params)
if (is.null(res)) return(data.frame())
cols <- stringi::stri_trans_tolower(res$columns$name)
cols <- stringi::stri_replace_all_regex(cols, "[\\('\\)]", "")
cols <- stringi::stri_replace_all_regex(cols, "[[:space:]" %s+%
rawToChar(as.raw(c(0xe2, 0x80, 0x93))) %s+% "-]+",
"_")
out <- setNames(as_data_frame(res$data), cols)
out <- dplyr::mutate_all(out, "clean_cols")
out <- suppressMessages(readr::type_convert(out))
show_citation(res)
out
}
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