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#' Versions of GIFT available
#'
#' Returns a table with information on the different versions of the database
#'
#' @return
#' A data frame with 4 columns.
#'
#' @details Here is what each column refers to:
#'
#' \emph{ID} - Identification number of the version\cr
#' \emph{version} - Version number\cr
#' \emph{description} - What were the major updates about
#'
#' @references
#' Denelle, P., Weigelt, P., & Kreft, H. (2023). GIFT—An R package to
#' access the Global Inventory of Floras and Traits. Methods in Ecology
#' and Evolution, 14, 2738-2748.
#' https://doi.org/10.1111/2041-210X.14213
#'
#' Weigelt, P, König, C, Kreft, H. GIFT – A Global Inventory of Floras and
#' Traits for macroecology and biogeography. J Biogeogr. 2020; 47: 16– 43.
#' https://doi.org/10.1111/jbi.13623
#'
#' @seealso [GIFT::GIFT_checklists()]
#'
#' @examples
#' \donttest{
#' ex <- GIFT_versions()
#' }
#'
#' @importFrom jsonlite read_json
#'
#' @export
GIFT_versions <- function(){
if(!curl::has_internet()) {
message("No internet connection found.")
return(NULL)
} else{
gift_version <- jsonlite::read_json(
"https://gift.uni-goettingen.de/api/index.php?query=versions",
simplifyVector = TRUE)
return(gift_version)
}
}
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