Tengo una sugerencia, y es añadir un argumento adicional a la función R/sp_distance_to_exclusion.R
En lugar de hacer que:
#' @return A tibble data frame with S rows and 2 columns. Each row contains the #' species name and its great circle distance to the border where it goes #' excluded (i.e, that distance is the absolute value of the angle between #' the center and the tangent point in a given "edge" of the feasibility domain).
propongo:
#' @param norm boolean. optional. If TRUE the arc length distance to the border is normalized by 2pi (the maximum distance)
info sobre arguments opcionales en funciones de R