#' royal_imperial_route Function
#'
#' This function download data about Royal trakt in Poznan.
#' @keywords keyword
#' @export
#' @details Details of usage
#' @importFrom jsonlite fromJSON
#' @importFrom purrr map map2_df
#' @importFrom dplyr mutate
#' @format
#' \describe{
#' }
#' @examples
#' Trakt <- royal_imperial_route()
# trakt
royal_imperial_route <- function(){
if(have_ip() == T) {
tryCatch({ # w przypadku baraku internetu wywoła wyjątek
tr <- fromJSON("http://www.poznan.pl/mim/plan/map_service.html?mtype=tourism&co=trakt")
}, error = function(err) {
warning("You used bad link!")
})
}else{
warning("You lost connection to internet!")
}
tract <- tr$features$geometry
tractcoord <- tract$coordinates
tractcoord2d <- map(tractcoord, drop)
tractcoord_df <- map(tractcoord2d, as.data.frame)
tractcoord_id <- map2_df(tractcoord_df, tr$features$id, ~mutate(.x, id=.y))
tractcoord_id <- data.frame(Longitude=tractcoord_id$V1,
Latitude=tractcoord_id$V2,
id=tractcoord_id$id)
}
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