diff options
Diffstat (limited to 'pkg/R')
| -rw-r--r-- | pkg/R/PEC_sw_drainage_UK.R | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/pkg/R/PEC_sw_drainage_UK.R b/pkg/R/PEC_sw_drainage_UK.R index 8402d95..43c732e 100644 --- a/pkg/R/PEC_sw_drainage_UK.R +++ b/pkg/R/PEC_sw_drainage_UK.R @@ -41,20 +41,22 @@ PEC_sw_drainage_UK_ini <- function(rate, interception = 0, Koc, amount_available <- rate * (1 - interception) # g/ha if (!missing(latest_application)) { + lct <- Sys.getlocale("LC_TIME") + tmp <- Sys.setlocale("LC_TIME", "C") + latest <- as.Date(paste(latest_application, "1999"), "%d %b %Y") + tmp <- Sys.setlocale("LC_TIME", lct) + degradation_time <- as.numeric(difftime(as.Date("1999-10-01"), units = "days", latest)) if (!missing(soil_DT50)) { k = log(2)/soil_DT50 as.Date(paste(latest_application, "1999"), "%d %B %Y") - lct <- Sys.getlocale("LC_TIME") - tmp <- Sys.setlocale("LC_TIME", "C") - latest <- as.Date(paste(latest_application, "1999"), "%d %b %Y") - tmp <- Sys.setlocale("LC_TIME", lct) - degradation_time <- as.numeric(difftime(as.Date("1999-10-01"), units = "days", latest)) amount_available <- amount_available * exp(-k * degradation_time) if (!missing(model)) stop("You already supplied a soil_DT50 value, implying SFO kinetics") } if (!missing(model)) { - amount_available <- pfm_degradation(model, parms = model_parms, times = degradation_time) + fraction_left <- pfm_degradation(model, parms = model_parms, + times = degradation_time)[1, "parent"] + amount_available <- fraction_left * amount_available } } |