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-rw-r--r--R/PEC_sw_focus.R59
1 files changed, 56 insertions, 3 deletions
diff --git a/R/PEC_sw_focus.R b/R/PEC_sw_focus.R
index c098fb2..e6f2689 100644
--- a/R/PEC_sw_focus.R
+++ b/R/PEC_sw_focus.R
@@ -27,6 +27,7 @@
#' applications are given explicitly
#' @param n The number of applications
#' @param i The application interval
+#' @param comment A comment for the input file
#' @param met A list containing metabolite specific parameters. e.g.
#' conveniently generated by \code{\link{chent_focus_sw}}. If not NULL,
#' the PEC is calculated for this compound, not the parent.
@@ -39,6 +40,12 @@
#' parent or a metabolite
#' @param scenario The name of the scenario. Must be one of the scenario
#' names given in \code{\link{FOCUS_Step_12_scenarios}}
+#' @param txt_file the name, and potentially the full path to the
+#' Steps.12 input text file to which the specification of the run(s)
+#' should be written
+#' @param overwrite Should an existing file a the location specified in
+#' \code{txt_file} be overwritten?
+#' @param append Should the input text file be appended?
#' @examples
#' # Parent only
#' dummy_1 <- chent_focus_sw(cwsat = 6000, DT50_ws = 6, Koc = 344.8)
@@ -49,9 +56,11 @@
#' M1 <- chent_focus_sw(mw = 100, cwsat = 100, DT50_ws = 100, Koc = 50, max_ws = 0, max_soil = 0.5)
#' PEC_sw_focus(new_dummy, 1000, scenario = "cereals, winter", met = M1)
PEC_sw_focus <- function(parent, rate, n = 1, i = NA,
+ comment = "",
met = NULL,
f_drift = NA, f_rd = 0.1,
- scenario = FOCUS_Step_12_scenarios$names)
+ scenario = FOCUS_Step_12_scenarios$names,
+ txt_file = "pesticide.txt", overwrite = FALSE, append = TRUE)
{
if (n > 1 & is.na(i)) stop("Please specify the interval i if n > 1")
@@ -66,7 +75,37 @@ PEC_sw_focus <- function(parent, rate, n = 1, i = NA,
# }
}
+ # Write to txt file if requested
+ add_line <- function(x) cat(paste0(x, "\r\n"), file = txt, append = TRUE)
+ add <- function(x) cat(paste(x, "\t"), file = txt, append = TRUE)
+ if (file.exists(txt_file)) {
+ if (append) {
+ txt <- file(txt_file, "a")
+ } else {
+ if (overwrite) {
+ txt <- file(txt_file, "w")
+ } else {
+ stop("The file", txt_file, "already exists, and you did not request",
+ "appending or overwriting it")
+ }
+ }
+ }
+ on.exit(close(txt))
+
+ # Write header to txt file
+ header <- c("Active Substance", "Compound", "Comment", "Mol mass a.i.",
+ "Mol mass met.", "Water solubility", "KOC assessed compound",
+ "KOC parent compound", "DT50", "Max. in Water",
+ "Max. in Soil asessed compound", # we reproduce the typo...
+ "App. Rate", "Number of App.", "Time between app.",
+ "App. Type", "DT50 soil parent compound", "DT50 soil",
+ "DT50 water", "DT50 sediment", "Region / Season",
+ "Interception class")
+ add_line(paste(header, collapse = "\t"))
+
+
if (is.null(met)) {
+ compound = parent$name
cwsat = parent$cwsat
mw_ratio = 1
max_soil = 1
@@ -74,6 +113,7 @@ PEC_sw_focus <- function(parent, rate, n = 1, i = NA,
Koc = parent$Koc
DT50_ws = parent$DT50_ws
} else {
+ compound = met$name
cwsat = met$cwsat
mw_ratio = met$mw / parent$mw
max_soil = met$max_soil
@@ -82,6 +122,18 @@ PEC_sw_focus <- function(parent, rate, n = 1, i = NA,
DT50_ws = met$DT50_ws
}
+ add(parent$name)
+ add(compound)
+ add(comment)
+ if (is.na(parent$mw)) add("-99.00")
+ else add(sprintf("%.2f", parent$mw))
+ if (is.na(met$mw)) add("-99.00")
+ else add(sprintf("%.2f", met$mw))
+ add(sprintf("%.2f", cwsat))
+ add(sprintf("%.2f", Koc))
+ if (is.null(met)) add("0.00E+00")
+ else add(sprintf("%.2f", parent$Koc))
+
# Rates for a single application
eq_rate_drift_s = mw_ratio * max_ws * rate
# Parent only, or metabolite formed in soil:
@@ -182,16 +234,17 @@ PEC_sw_focus <- function(parent, rate, n = 1, i = NA,
#' Create a chemical compound object for FOCUS Step 1 calculations
#'
#' @export
+#' @param name Length one character vector containing the name
#' @param cwsat Water solubility in mg/L
#' @param DT50_ws Half-life in water/sediment systems in days
#' @param Koc Partition coefficient between organic carbon and water
#' in L/kg.
-#' @param mw Molar weight in g/mol
+#' @param mw Molar weight in g/mol.
#' @param max_soil Maximum observed fraction (dimensionless) in soil
#' @param max_ws Maximum observed fraction (dimensionless) in water/sediment
#' systems
#' @return A list with the substance specific properties
-chent_focus_sw <- function(Koc, DT50_ws = NA, cwsat = 1000, mw = NA, max_soil = 1, max_ws = 1)
+chent_focus_sw <- function(name, Koc, DT50_ws = NA, cwsat = 1000, mw = NA, max_soil = 1, max_ws = 1)
{
list(Koc = Koc, DT50_ws = DT50_ws, cwsat = cwsat,
mw = mw, max_soil = max_soil, max_ws = max_ws)

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