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SWAT_calb.R
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################################################################################
# SWAT_calb.R #
################################################################################
# Purpose : To write R scripts to calibrate the model parameters
# with a simple monte carlos simulation
################################################################################
# Output : watershed outlet predictions #
################################################################################
# Author : Kyongho Son #
# Started: 10/1/2020 #
# Updates: 10/4/2020 #
################################################################################
# preparing files
# sensitivity inputs files based on the SWAT setup
# reading files
## copy files
#https://fs.r-lib.org/reference/copy.html
###############################################
#C:\Project\Columbia_SWAT\codes\SWAT_CalbR\SWAT_CalbR\Backup
## copy orginal files to TxtInOut-----
## loading library----------------------------
library(FME)
library(chron)
library(lubridate)
library(hydroGOF)
library(gtools)
library(fs)
###############################################
# home directory-----
home<-"C:/Project/Columbia_SWAT/codes/SWAT_CalbR/SWAT_CalbR"
# backup directory-----
Backup<-paste(home,"Backup",sep="/")
setwd(Backup)
Backup_params<-paste(home,"Backup_params",sep="/")
setwd(Backup_params)
# list of backup folder files
backup_files<-list.files(pattern=glob2rx("*"))
## copy the orginal files to the TxtINOut folder----
TxtInOut<-paste(home,"TxtInOut",sep="/")
file.copy(backup_files, TxtInOut,overwrite = TRUE)
### parameter calibration folder----
paramin<-paste(home,"param.in",sep="/")
# reading parameter ranges------
param_file<-"ParamRanges-Sens.txt"
#param_ranges<-read.csv(paste(paramin,param_file,sep="/"),header=T,sep="\t")
param_ranges<-read.csv(paste(paramin,param_file,sep="/"),header=T,sep="")
## reading parameter for calibration-----
#para_sens<- data.table::fread(paste(paramin,"ParamFiles-Sens.txt",sep="/"),skip = 0,sep = "auto",
# header="auto", data.table = F, verbose = F)
para_cal<- data.table::fread(paste(paramin,"ParamFiles_Cals.txt",sep="/"),skip = 0,sep = "auto",
header="auto", data.table = F, verbose = F)
## determine which parameter will be calibrated----
# number of calibrated/sensitivity analysis parameters----
unique(para_cal$ParameterName)
length(unique(para_cal$ParameterName))
#C:\Project\Columbia_SWAT\codes\SWAT_CalbR\SWAT_CalbR\TxtInOut
# calibration folder----
Calb<-paste(home,"Calb",sep="/")
Calb_lh<-paste(home,"Calb_lh",sep="/")
## setwd folder "TxtInOut"----
TxtInOut<-paste(home,"TxtInOut",sep="/")
setwd(TxtInOut)
# editing the file.cio file for modifying the simulation periods/other setups
shell.exec("file.cio")
# if replace the orignal value 1
# otherwise, 2
# number of running
# number of calibration-----
ncal=500
# generating the parameter ranges----
# number of parameters,tcal----
tcal=21
param_cal_ranges<-matrix(0,ncol=tcal+1,nrow=ncal)
param_cal_ranges_lh<-matrix(0,ncol=tcal+1,nrow=ncal)
###1) Latin hypercube------------
## 21 parameters
min_par<-c(-0.2,param_ranges[2,3],param_ranges[3,3],param_ranges[4,3],param_ranges[5,3],param_ranges[6,3],param_ranges[7,3],param_ranges[8,3],param_ranges[9,3],-0.2,-0.2,param_ranges[12,3],param_ranges[13,3],param_ranges[14,3],param_ranges[15,3],param_ranges[16,3],param_ranges[17,3],param_ranges[18,3],param_ranges[19,3],param_ranges[20,3],param_ranges[21,3])
max_par<-c(0.2,param_ranges[2,4],param_ranges[3,4],param_ranges[4,4],param_ranges[5,4],param_ranges[6,4],param_ranges[7,4],param_ranges[8,4],param_ranges[9,4],0.2,0.2,param_ranges[12,4],param_ranges[13,4],param_ranges[14,4],param_ranges[15,4],param_ranges[16,4],param_ranges[17,4],param_ranges[18,4],param_ranges[19,4],param_ranges[20,4],param_ranges[21,4])
parRange <- data.frame(min=min_par,max=max_par)
rownames(parRange) <-c(para_cal$ParameterName)
#pairs(Latinhyper(parRange, ncal), main = "Latin hypercube")
# }
param_cal_ranges_lh<-Latinhyper(parRange, ncal)
## saving the generated parameter values-----
header<-c(para_cal$ParameterName,"ncal")
write.csv(param_cal_ranges_lh,file="../Calb_lh/param_calb_lh.csv",row.names = FALSE)
###############################################################################
##2) monte caro simulations/random uniform distribution-----
# generating the parameter values with random generator
tcal=21
param_cal_ranges<-matrix(0,ncol=tcal+1,nrow=ncal)
param_cal_ranges[,1]=runif(ncal,min=-0.2,max=0.2)
param_cal_ranges[,2]=runif(ncal,min=param_ranges[2,3],max=param_ranges[2,4])
param_cal_ranges[,3]=runif(ncal,min=param_ranges[3,3],max=param_ranges[3,4])
param_cal_ranges[,4]=runif(ncal,min=param_ranges[4,3],max=param_ranges[4,4])
param_cal_ranges[,5]=runif(ncal,min=param_ranges[5,3],max=param_ranges[5,4])
param_cal_ranges[,6]=runif(ncal,min=param_ranges[6,3],max=param_ranges[6,4])
param_cal_ranges[,7]=runif(ncal,min=param_ranges[7,3],max=param_ranges[7,4])
param_cal_ranges[,8]=runif(ncal,min=param_ranges[8,3],max=param_ranges[8,4])
param_cal_ranges[,9]=runif(ncal,min=param_ranges[9,3],max=param_ranges[9,4])
#SOL_K (relative)----
param_cal_ranges[,10]=runif(ncal,min=-0.2,max=0.2)
#SOL_AWC (relative)---
param_cal_ranges[,11]=runif(ncal,min=-0.2,max=0.2)
param_cal_ranges[,12]=runif(ncal,min=param_ranges[12,3],max=param_ranges[12,4])
param_cal_ranges[,13]=runif(ncal,min=param_ranges[13,3],max=param_ranges[13,4])
#OV_N (relative)-----
param_cal_ranges[,14]=runif(ncal,min=param_ranges[14,3],max=param_ranges[14,4])
param_cal_ranges[,15]=runif(ncal,min=param_ranges[15,3],max=param_ranges[15,4])
param_cal_ranges[,16]=runif(ncal,min=param_ranges[16,3],max=param_ranges[16,4])
param_cal_ranges[,17]=runif(ncal,min=param_ranges[17,3],max=param_ranges[17,4])
param_cal_ranges[,18]=runif(ncal,min=param_ranges[18,3],max=param_ranges[18,4])
param_cal_ranges[,19]=runif(ncal,min=param_ranges[19,3],max=param_ranges[19,4])
param_cal_ranges[,20]=runif(ncal,min=param_ranges[20,3],max=param_ranges[20,4])
param_cal_ranges[,21]=runif(ncal,min=param_ranges[21,3],max=param_ranges[21,4])
# adding number of parameter sets----
param_cal_ranges[,22]=1:ncal
###############################################################################
## saving the generated parameter values-----
header<-c(para_cal$ParameterName,"ncal")
colnames(param_cal_ranges)<-header
write.csv(param_cal_ranges,file="../Calb/param_calb.csv",row.names = FALSE)
###############################################################################
# loop for the number of calibartion----
for (j in 1:ncal){
## modifying the parameters----
print(paste0("start modifying parameter values of simulation","=",j))
#k, number of calibated parameters----
for (k in 1:nrow(para_cal)) {
## modifying the initial range of parameter values----
Filename<-para_cal[k,3]
files<-list.files(pattern=glob2rx(paste("*.",Filename,sep="")))
id<-as.numeric(para_cal[para_cal$ParameterNmbr==k,1])
newvalue<-as.numeric(param_cal_ranges_lh[j,k])
row<-as.numeric(para_cal[para_cal$ParameterNmbr==k,4][1])
col.ini<-as.numeric(para_cal[para_cal$ParameterNmbr==k,5])
col.fin<-as.numeric(para_cal[para_cal$ParameterNmbr==k,6])
dec<-as.numeric(para_cal[para_cal$ParameterNmbr==k,7])
repl<-as.numeric(para_cal[para_cal$ParameterNmbr==k,8])
#############################################################
#start.time <- Sys.time()
# start-modifying file----
for (i in 1:length(files)){
#### modifying the parameter values----
ModifyInputFile(id,newvalue,files[i],row,col.ini,col.fin,dec,repl)
}
#end.time <- Sys.time()
#time.taken <- end.time - start.time
#########################################################
#print(paste0("complete modifying parameter values","=",k))
} # end -modifying files---
###################################################################
# running swat simulations with modified parameter sets----
system("swat.exe") # or another version you desire
print(paste0("number of simulations","=",j))
file.remove("output.hru")
#copy the model outputs to calb folder-----------
watout_files<-list.files(pattern=glob2rx("watout*"))
file.copy(watout_files,Calb_lh,overwrite = TRUE)
file.rename("../Calb_lh/watout.dat", paste("../Calb_lh",paste0(watout_files,"_",j),sep='/'))
####################################################################################
# #1) reset the parameter files-------------
# setwd(Backup)
# print(paste0("start backup files"))
# start.time <- Sys.time()
# for (k in 1:nrow(para_cal)) {
#
# Filename<-para_cal[k,3]
# files<-list.files(pattern=glob2rx(paste("*.",Filename,sep="")))
# ## copy the orginal files to the TxtINOut folder----
# file.copy(files, TxtInOut,overwrite = TRUE)
# print(paste0("complete backup files","=",k))
#
# }
# end.time <- Sys.time()
# time.taken <- end.time - start.time
#
#2) reset the parameter files-------------
setwd(Backup)
print(paste0("start backup files"))
#start.time <- Sys.time()
for (k in 1:nrow(para_cal)) {
Filename<-para_cal[k,3]
files<-list.files(pattern=glob2rx(paste("*.",Filename,sep="")))
## copy the orginal files to the TxtINOut folder----
file_copy(files, TxtInOut,overwrite = TRUE)
#print(paste0("complete backup files","=",k))
}
#end.time <- Sys.time()
#time.taken <- end.time - start.time
# start.time <- Sys.time()
# dir_copy(Backup_params,TxtInOut, overwrite = TRUE)
# end.time <- Sys.time()
# time.taken <- end.time - start.time
#
# copy directory
# copyDirectory
########################################################################
# chaning directory to "TXtinOUT----------------------------
setwd(TxtInOut)
}
###############################################################################