EGRET (version 3.0.9)

fluxBiasMulti: Produces 8-panel plot that is useful for determining if there is a flux bias problem

Description

These plots use the jack-knife estimates from WRTDS to investigate the potential flux bias problem. It can also be used for estimates constructed by other methods (such as LOADEST) if the results are stored in a data frame organized like the Sample data frame. It allows additional label information to indicate what method is used. The use of this plot is described in Hirsch, Robert M., 2014. Large Biases in Regression-Based Constituent Flux Estimates: Causes and Diagnostic Tools. Journal of the American Water Resources Association (JAWRA) 1-24. DOI: 10.1111/jawr.12195

Although there are a lot of optional arguments to this function, most are set to a logical default.

Data come from named list, which contains a Sample dataframe with the sample data, a Daily dataframe with the daily flow data, and an INFO dataframe with metadata.

Usage

fluxBiasMulti(eList, qUnit = 2, fluxUnit = 3, moreTitle = "WRTDS",
  cex = 0.7, cex.axis = 1.1, cex.main = 1.1, randomCensored = FALSE,
  col = "black", lwd = 1, concLab = 1, monthLab = 1, ...)

Arguments

eList

named list with at least Sample, Daily, and INFO dataframes

qUnit

object of qUnit class. printqUnitCheatSheet, or numeric represented the short code, or character representing the descriptive name.

fluxUnit

object of fluxUnit class. printFluxUnitCheatSheet, or numeric represented the short code, or character representing the descriptive name.

moreTitle

character specifying some additional information to go in figure title, typically some information about the specific estimation method used, default is no additional information

cex

numerical value giving the amount by which plotting symbols should be magnified

cex.axis

magnification to be used for axis annotation relative to the current setting of cex

cex.main

magnification to be used for main titles relative to the current setting of cex

randomCensored

logical, if TRUE plot a random value for censored data. Default is FALSE.

col

color of points on plot, see ?par 'Color Specification'

lwd

number line width

concLab

object of concUnit class, or numeric represented the short code, or character representing the descriptive name. By default, this argument sets concentration labels to use either Concentration or Conc (for tiny plots). Units are taken from the eList$INFO$param.units. To use any other words than "Concentration" see vignette(topic = "units", package = "EGRET").

monthLab

object of monthLabel class, or numeric represented the short code, or character representing the descriptive name.

...

arbitrary graphical parameters that will be passed to genericEGRETDotPlot function (see ?par for options)

Examples

eList <- Choptank_eList
# Water year:
fluxBiasMulti(eList)
fluxBiasMulti(eList, fluxUnit = 2)
# Graphs consisting of Jun-Aug
eList <- setPA(eList,paStart=6,paLong=3)
fluxBiasMulti(eList)