R/feMakes.R

In rOpenGov/mpg: FuelEconomy.gov Data

feMakes <-
  function(year, ...) {
    response <- feQuery(paste("vehicle/menu/make?year=", year, sep = ""))
    if (is.null(response)) {
      return(NULL)
    }
    out <- xpathSApply(response, "//value", xmlValue)
    # class(out) <- c('feMakes',class(out))
    return(out)
  }