RunModel_GR4H.R

RunModel_GR4H <- function(InputsModel, RunOptions, Param) {


  ## Initialization of variables
  NParam <- 4
  FortranOutputs <- .FortranOutputs(GR = "GR4H")$GR


  ## Arguments check
  if (!inherits(InputsModel, "InputsModel")) {
    stop("'InputsModel' must be of class 'InputsModel'")
  }
  if (!inherits(InputsModel, "hourly")) {
    stop("'InputsModel' must be of class 'hourly'")
  }
  if (!inherits(InputsModel, "GR")) {
    stop("'InputsModel' must be of class 'GR'")
  }
  if (!inherits(RunOptions, "RunOptions")) {
    stop("'RunOptions' must be of class 'RunOptions'")
  }
  if (!inherits(RunOptions, "GR")) {
    stop("'RunOptions' must be of class 'GR'")
  }
  if (!is.vector(Param) | !is.numeric(Param)) {
    stop("'Param' must be a numeric vector")
  }
  if (sum(!is.na(Param)) != NParam) {
    stop(paste("'Param' must be a vector of length", NParam, "and contain no NA"))
  }
  Param <- as.double(Param)

  Param_X1X3_threshold <- 1e-2
  Param_X4_threshold   <- 0.5
  if (Param[1L] < Param_X1X3_threshold) {
    warning(sprintf("Param[1] (X1: production store capacity [mm]) < %.2f\n X1 set to %.2f", Param_X1X3_threshold, Param_X1X3_threshold))
    Param[1L] <- Param_X1X3_threshold
  }
  if (Param[3L] < Param_X1X3_threshold) {
    warning(sprintf("Param[3] (X3: routing store capacity [mm]) < %.2f\n X3 set to %.2f", Param_X1X3_threshold, Param_X1X3_threshold))
    Param[3L] <- Param_X1X3_threshold
  }
  if (Param[4L] < Param_X4_threshold) {
    warning(sprintf("Param[4] (X4: unit hydrograph time constant [h]) < %.2f\n X4 set to %.2f", Param_X4_threshold, Param_X4_threshold))
    Param[4L] <- Param_X4_threshold
  }

  ## Input data preparation
  if (identical(RunOptions$IndPeriod_WarmUp, 0L)) {
    RunOptions$IndPeriod_WarmUp <- NULL
  }
  IndPeriod1   <- c(RunOptions$IndPeriod_WarmUp, RunOptions$IndPeriod_Run)
  LInputSeries <- as.integer(length(IndPeriod1))
  if ("all" %in% RunOptions$Outputs_Sim) {
    IndOutputs <- as.integer(1:length(FortranOutputs))
  } else {
    IndOutputs <- which(FortranOutputs %in% RunOptions$Outputs_Sim)
  }

  ## Output data preparation
  IndPeriod2     <- (length(RunOptions$IndPeriod_WarmUp)+1):LInputSeries
  ExportDatesR   <- "DatesR"   %in% RunOptions$Outputs_Sim
  ExportStateEnd <- "StateEnd" %in% RunOptions$Outputs_Sim

  ## Use of IniResLevels
  if (!is.null(RunOptions$IniResLevels)) {
    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1] * Param[1] ### production store level (mm)
    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2] * Param[3] ### routing store level (mm)
  }