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#' Shortening column names for meteorological variables
#'
#' Shortening column names of meteorological parameters to improve the readability of downloaded dataset from the danepubliczne.imgw.pl collection and removing duplicated column names
#'
#' @param data downloaded dataset with original column names
#' @param col_names three types of column names possible: "short" - default, values with shorten names, "full" - full English description, "polish" - original names in the dataset
#' @param remove_duplicates whether to remove duplicated column names (default TRUE - i.e., columns with duplicated names are deleted)
#' @keywords internal
#'
#' @examples
#' \donttest{
#' monthly = meteo_imgw("monthly", rank = "climate", year = 1969)
#' colnames(monthly)
#' abbr = climate:::meteo_shortening_imgw(data = monthly,
#' col_names = "full",
#' remove_duplicates = TRUE)
#' head(abbr)
#' }
#'
meteo_shortening_imgw = function(data, col_names = "short", remove_duplicates = TRUE) {
if (col_names != "polish") {
abbrev = climate::imgw_meteo_abbrev
orig_columns = trimws(gsub("\\s+", " ", colnames(data))) # remove double spaces
matches = match(orig_columns, abbrev$fullname)
matches = matches[!is.na(matches)]
if (col_names == "short") {
# abbrev english
colnames(data)[orig_columns %in% abbrev$fullname] = abbrev$abbr_eng[matches]
}
if (col_names == "full") {
# full english names:
colnames(data)[orig_columns %in% abbrev$fullname] = abbrev$fullname_eng[matches]
}
}
# removing duplicated column names: (e.g. station's name)
if (remove_duplicates == TRUE) {
data = data[, !duplicated(colnames(data))]
}
return(data)
} # end of function
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