autoCalibrate-RPhosFate-method function

One dimensional automatic model calibration

Automatically calibrates the model with the help of a combination of golden section search and successive parabolic interpolation.

## S4 method for signature 'RPhosFate'
autoCalibrate(
  x,
  substance,
  col,
  interval,
  metric,
  tol = min(interval) * 0.1,
  parameter = NULL
)

Arguments

• x: An S4 RPhosFate river catchment object.
• substance: A character string specifying the substance to calculate.
• col: A character string specifying the calibration data column with the respective substance river loads.
• interval: A numeric vector specifying the end-points of the interval to be searched.
• metric: A character string specifying the metric to optimise. See calibrationQuality for available metrics.
• tol: A numeric scalar specifying the desired accuracy of the parameter used for optimisation (not the metric).
• parameter: By default, SS are calibrated utilising the overland deposition rate and all other substances are calibrated utilising their respective enrichment ratio. This argument can be used to specify a dedicated parameter utilised for calibration via a character string: "ns_dep_ovl" for overland or "ns_dep_cha" for channel deposition rate.

Returns

An S4 RPhosFate river catchment object and side effects in the form of raster files.

Examples

# temporary demonstration project copy
cv_dir <- demoProject()
# load temporary demonstration project
x <- RPhosFate(
  cv_dir = cv_dir,
  ls_ini = TRUE
)
# presupposed method calls
x <- firstRun(x, "SS")
x <- snapGauges(x)

x <- autoCalibrate(
  x,
  "SS",
  col = "SS_load",
  interval = c(1e-3, 2e-3),
  metric = "KGE"
)

See Also

snapGauges, optimize