R/check_times.R

In pastclim: Manipulate Time Series of Climate Reconstructions

#' Check multiple time variables
#'
#' Check that we only have one set of times
#'
#' @param time_bp times in bp
#' @param time_ce times in ce
#' @param allow_null boolean whether both can be NULL
#' @returns times in bp
#' @keywords internal

check_time_vars <- function(time_bp, time_ce, allow_null = TRUE) {
  if (all(!is.null(time_bp), !is.null(time_ce))) {
    stop(
      "both time_bp and time_ce were provide, the function can only ",
      "accept one of the two"
    )
  }
  if (all(is.null(time_bp), is.null(time_ce))) {
    if (allow_null) {
      return(NULL)
    } else {
      stop("either time_bp or time_ce should be provided")
    }
  }
  if (is.null(time_ce)) {
    return(time_bp)
  } else {
    # convert it to bp
    if (inherits(time_ce, "list")) {
      return(lapply(time_ce, function(x) {
        x - 1950
      }))
    } else {
      return(time_ce - 1950)
    }
  }
}