Commit fc54de91 authored by Dorchies David's avatar Dorchies David
Browse files

doc(RunModel_Lag): improvement of the example

Refs #99
parent d46b4873
......@@ -38,53 +38,64 @@ The list value contains an extra item named \code{QsimDown} which is a copy of \
\examples{
library(airGR)
#####################################################################
## Simulation of a reservoir with a purpose of low-flow mitigation ##
#####################################################################
## Preparation of the InputsModel object
## loading catchment data
# loading package and catchment data
library(airGR)
data(L0123001)
## Simulating a reservoir
# Withdrawing 1 m3/s with an instream flow of 1 m3/s
# The reservoir withdraws 1 m3/s when it's possible considering the flow observed in the basin
Qupstream <- matrix(- unlist(lapply(BasinObs$Qls / 1000 - 1, function(x) {
min(1, max(0,x, na.rm = TRUE))
})), ncol = 1)
# Except between July and November when releasing 3 m3/s
# Except between July and September when the reservoir releases 3 m3/s for low-flow mitigation
month <- as.numeric(format(BasinObs$DatesR,"\%m"))
Qupstream[month >= 7 & month <= 9] <- 3
# Conversion in m3/day
Qupstream <- Qupstream * 86400
## The reservoir is not an upstream subcachment: its areas is NA
# The reservoir is not an upstream subcachment: its areas is NA
BasinAreas <- c(NA, BasinInfo$BasinArea)
## Delay time between the reservoir and the catchment outlet is 2 days and the distance is 150 km
# Delay time between the reservoir and the catchment outlet is 2 days and the distance is 150 km
LengthHydro <- 150000
Lag <- LengthHydro / 2 / 86400 * 1000 # Conversion km/day -> m/s
## preparation of the InputsModel object
InputsModel <- CreateInputsModel(FUN_MOD = RunModel_GR4J, DatesR = BasinObs$DatesR,
Precip = BasinObs$P, PotEvap = BasinObs$E,
Qupstream = Qupstream, LengthHydro = LengthHydro,
BasinAreas = BasinAreas)
## run period selection
## Simulation of the basin with the reservoir influence
# Run period selection
Ind_Run <- seq(which(format(BasinObs$DatesR, format = "\%Y-\%m-\%d")=="1990-01-01"),
which(format(BasinObs$DatesR, format = "\%Y-\%m-\%d")=="1999-12-31"))
## preparation of the RunOptions object
# Creation of the RunOptions object
RunOptions <- CreateRunOptions(FUN_MOD = RunModel_GR4J,
InputsModel = InputsModel, IndPeriod_Run = Ind_Run)
## simulation of downstream subcatchment
# Simulation of the runoff of the catchment with a GR4J model
Param <- c(X1 = 257.238, X2 = 1.012, X3 = 88.235, X4 = 2.208)
OutputsModelDown <- RunModel_GR4J(InputsModel = InputsModel,
RunOptions = RunOptions, Param = Param)
# With a delay of 2 days for 150 km, the flow velocity is 75 km per day
Velocity <- (LengthHydro / 2) / 86400 # Conversion m/day -> m/s
# Add the output of the precipitation-runoff model in the InputsModel object
InputsModel$OutputsModel <- OutputsModelDown
# Run the lag model which routes precipitation-runoff model and upstream flows
OutputsModel <- RunModel_Lag(InputsModel = InputsModel,
RunOptions = RunOptions, Param = Lag)
RunOptions = RunOptions, Param = Velocity)
## results preview of comparison between naturalised (observed) and influenced flow (simulated)
## Results preview of comparison between naturalised (observed) and influenced flow (simulated)
plot(OutputsModel, Qobs = OutputsModel$QsimDown)
}
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment