R/resistance.R

In springgbv/Open-Bodem-Index-Calculator: Calculate the Open Bodem Index (OBI) Score

#' Calculate indicator for soil resistance
#'
#' This function calculates the indicator for the resistance of the soil against diseases and is indicated by the amount of soil life.
#' 
#' @param A_SOM_LOI (numeric) The organic matter content of the soil in percentage
#' 
#' @examples 
#' ind_resistance(A_SOM_LOI = 3.5)
#' ind_resistance(A_SOM_LOI = c(3.5,5.5,15,25))
#' 
#' @return 
#' The evaluated score for the soil function to resist diseases. A numeric value between 0 and 1.
#' 
#' @export
ind_resistance <- function(A_SOM_LOI) {
  
  # Check inputs
  checkmate::assert_numeric(A_SOM_LOI, lower = 0, upper = 100, any.missing = FALSE)
  
  # Evaluate the soil resistance
  value <- OBIC::evaluate_logistic(A_SOM_LOI, b = 1.2, x0 = 1.7, v = 0.4)
  
  return(value)
  
}