plotQC: Plot using QC flags

In FREddyPro: Post-Processing EddyPro Full Output File

Description

Plot fluxes using different colour and points for each QC.

Usage

plotQC(data, var, qc_var=NULL, xvar, lines = FALSE, legendSide = NULL,
ylab = var, xlab = "DOY", col = c(1, 2, 3, 4, 5, 6, 7, 8, 9),
pch = c(16, 17, 18, 19, 20, 21, 22, 23, 24), ...)

Arguments

data	The EddyPro full output data frame
var	Character. The name of the variable to plot. Default variable is CO2 flux.
qc_var	Character. The name of the qc variable to plot.
xvar	Character. The name of the X variable to plot. Default variable is DOY.
lines	Logical. If TRUE a line will be drawn between each point
legendSide	Side where to place the legend of the plot. Options include 'topright', 'topleft', 'bottomright', 'bottomleft', 'center', 'bottom', 'left', 'right', 'top'. For more details see legend help file
ylab	y axis label
xlab	x axis label
col	Colour of the points. This can either be a single value or a vector for each of the flag
pch	Integer or single character. The type of points
...	Any extra plotting arguments

Note

The variable should have a QC flag. Currently the function works on the three flag system i.e., 0, 1 and 2.

Author(s)

Georgios Xenakis

Examples

## Close any previously open graphic devices
graphics.off()

## Load the data
data(fluxes)

## Clean fluxes
fluxes=cleanFluxes(fluxes,sdCor=TRUE,sdTimes=3,timesList=3,distCor=TRUE,
                    thresholdList=list(H=c(-100,1000),LE=c(-100,1000)))

## Plot CO2 fluxes based on the QC flag
plotQC(fluxes,"co2_flux",legendSide='bottomleft',xlab="Day of year",
        lines=TRUE,lty=2,ylab="F"[c]~" (umol/m"^2~"/s)",col=c(1,1,1),pch=c(1,2,8),
        xlim=c(150,155),xaxt='n',main='QC flags')

## Draw a new X-axis
axis(1,at=seq(150,155,0.5),labels=TRUE)

## A horizontal line
abline(h=0,lty=2)

Example output

FREddyPro documentation built on May 29, 2017, 7:22 p.m.