#' @title Get primary inputs
#' @description This function will retrieve any primary input from the input-output
#' table.
#' @param data_table A symmetric input-output table, a use table, or a
#' supply table retrieved by the \code{\link{iotable_get}} function.
#' @param primary_input The primary input to be returned from the table.
#' @importFrom dplyr select mutate across where
#' @return A data frame with the vector of multipliers and the an
#' auxiliary metadata column (for joining with other matrixes.)
#' @family iotables processing functions
#' @autoglobal
#' @examples
#' comp_employees_de <- primary_input_get(
#' data_table = iotable_get(),
#' primary_input = "compensation_employees")
#' @export
primary_input_get <- function ( data_table,
primary_input = "compensation_employees") {
if ( is.null(data_table)) {
stop ( "No input-output table was given as an input")
}
last_column <- quadrant_separator_find ( data_table )
data_table <- data_table %>%
mutate(across(where(is.factor), as.character)) %>%
select(1:last_column)
if ( primary_input %in% data_table[[1]] ) {
input_row <- which ( data_table[[1]] == primary_input )
} else {
stop("The input is not found in this data source.")
}
data_table[input_row, ]
}
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