MINTSWATcalib.R

MINTSWATcalib=function(){
  # Function that runs through the calibration setup.
  save(readSWAT,file="readSWAT.R")
  change_params=""
  rm(change_params)
  load(paste(path.package("EcoHydRology"), "data/change_params.rda", sep = "/"))
  print("DEoptim Calibration has the can currently calibrate all 
         of the following parameters within the following files:\n")
  print(change_params[,1:2])
  calib_range=c("1999-12-31","2021-12-31")
  params_select=c(1,2,3,4,5,6,7,8,9,10,11,14,19,21,23,24,32,33)
  calib_params=change_params[params_select,]
  print("You are calibrating the following parameters within the following files:\n")
  print(calib_params[,1:2])
  
  calib_params[grep("Ksat",calib_params[,"parameter"]),c("min","max","current")]=c(.5,1.5,1)
  calib_params[grep("SMFMN",calib_params[,"parameter"]),c("min","max","current")]=c(0,5,2.5)
  calib_params[grep("SMFMX",calib_params[,"parameter"]),c("min","max","current")]=c(0,5,2.5)
  calib_params[grep("TIMP",calib_params[,"parameter"]),c("min","max","current")]=c(.01,1,.5)
  calib_params[grep("CN2",calib_params[,"parameter"]),c("min","max","current")]=c(35,95,70)
  calib_params[grep("Depth",calib_params[,"parameter"]),c("min","max","current")]=c(.5,2,1)
  calib_params[grep("Ave",calib_params[,"parameter"]),c("min","max","current")]=c(.5,2,1)
  calib_params[grep("ALPHA_BF",calib_params[,"parameter"]),c("min","max","current")]=c(.01,1,.8)
  calib_params[grep("GWQMN",calib_params[,"parameter"]),c("min","max","current")]=c(.1,600,1)
  calib_params[grep("GW_REVAP",calib_params[,"parameter"]),c("min","max","current")]=c(0,.3,.02)
  
  setup_swatcal(calib_params)
  
  # Test calibration
  x=calib_params$current
  swat_objective_function_rch(x,calib_range,calib_params,flowgage,rch,save_results=F)
#  cl <- parallel::makeCluster(availableCores())
  calib_range<<-calib_range
  calib_params<<-calib_params
  flowgage<<-flowgage
  rch<<-rch
  outDEoptim<-DEoptim(swat_objective_function_rch,calib_params$min,calib_params$max,
                      DEoptim.control(cluster=cl,strategy = 6,NP = 16,itermax=deiter,parallelType = 1,
                      packages = c("SWATmodel","topmodel"), 
                      parVar=c("NSeff","SWAToutput","cl")),calib_range,calib_params,flowgage,rch)
  x=outDEoptim$optim$bestmem  # need to save this, along with an ArcSWAT like directory structure for the basin  
  swat_objective_function_rch(x,calib_range,calib_params,flowgage,rch,save_results=TRUE)
  
}