Comments (1)
This function should do the trick of determining all dates available for flights data
#' Retrieve from ANAC website all dates available for flights data
#'
#' @return Numeric vector.
#' @keywords internal
#' @examples \dontrun{ if (interactive()) {
#' # check dates
#' a <- get_all_dates_available()
#'}}
get_all_dates_available <- function() {
# read html table
url = 'https://www.gov.br/anac/pt-br/assuntos/regulados/empresas-aereas/envio-de-informacoes/microdados/'
h <- rvest::read_html(url)
elements <- rvest::html_elements(h, "a")
# filter elements of basica data
basica_urls <- elements[elements %like% '/basica']
basica_urls <- lapply(X=basica_urls, FUN=function(i){rvest::html_attr(i,"href")})
# get all dates available
all_dates <- substr(basica_urls, (nchar(basica_urls) + 1) -11, nchar(basica_urls)-4 )
all_dates <- gsub("[-]", "", all_dates)
all_dates <- as.numeric(all_dates)
return(all_dates)
}
from flightsbr.
Related Issues (20)
- new function to check the date of the latest flight data available
- side effects of `month` and `year` on global envirornment
- instability in ANAC data links HOT 1
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- cache downloaded files in temp dir
- Function to download airfares HOT 4
- read_flights() not working
- error in read_flights() due to changes in ANAC links
- update v0.2.1 on CRAN
- Error in rbindlist of read_airfares()
- Error when read_airfares(date = 202203, domestic = T)
- Trouble selecting variables HOT 1
- Input vector of dates to read_flights() HOT 1
- Function read_airfares() not working HOT 1
- Erro ao utilizar `read_flights()` HOT 14
- change column classes
- Download aircrafts data from different dates
- ANAC has changed link to private airports HOT 1
- Error when using read_flights HOT 5
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from flightsbr.