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#' Get updates.txt With Information on Updates to the GSOD Data Set
#'
#' Gets and imports the 'updates.txt' file that has a change log of GSOD data.
#' Changes are shown in order from most recent to oldest changes by the "DATE"
#' field. Column names follow \CRANpkg{GSODR} naming conventions.
#'
#'
#' @return A [data.table::data.table()] object
#' @export
#' @autoglobal
#' @family metadata
#' @examplesIf interactive()
#' get_updates()
#'
get_updates <- function() {
op <- options(timeout = 600L)
on.exit(options(op))
file_in <- file.path(tempdir(), "updates.txt")
if (!file.exists(file_in)) {
tryCatch({
utils::download.file(
url =
"https://www1.ncdc.noaa.gov/pub/data/noaa/updates.txt",
destfile = file_in,
mode = "wb",
quiet = TRUE
)
}, error = function(x)
stop(
"The NCEI server with the update information is not responding. ",
"Please retry again later.\n",
call. = FALSE
))
}
x <- data.table::setDT(
utils::read.fwf(
file = file_in,
widths = c(7, 5, 5, 11, 25),
header = FALSE,
comment.char = "",
allowEscapes = TRUE,
strip.white = TRUE,
colClasses = "character",
col.names = c("STATION", "WBAN", "YEAR", "DATE", "COMMENT")
)
)
x[, STNID := sprintf("%s-%s", STATION, WBAN)]
x[, c("STATION", "WBAN") := NULL]
x[, YEAR := as.integer(YEAR)]
x[, DATE := as.Date(DATE)]
setorder(x, -DATE)
setcolorder(x, c("STNID"))
return(x[])
}
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