percentQC: Percent of each QC

In FREddyPro: Post-Processing EddyPro Full Output File

Description

Gives the percentage of a each QC flag for a variable and writes the result either on the standard output or a text file.

Usage

  percentQC(data, var = "co2_flux", qc_var = "qc_co2_flux",
write = FALSE, dir = "./")

Arguments

data	A data frame
var	A string giving the name of the variable.
qc_var	A string giving the name of the QC variable
write	Logical. If true the output is written on a text file rather the standard output. The name of the output file is standard and is percent_qc_flags.txt.
dir	The directory to write the output file. If none given then the working directory will be used.

Details

By default the function will give the percentage of each QC flag for CO2 flux. Other variables which have QC can be defined using the var option e.g., sensible heat, latent heat and momentum flux. The variable should have a QC flag for the function to work. If there is no QC flag associated with the variable, the result will be zero.

Value

Text with output percentages

Note

Variable needs to have an associate QC flag. Function currently works for the three flag system i.e., 0, 1, 2.

Author(s)

Georgios Xenakis

Examples

##Load the data
data(fluxes)

## Find the percent of each QC flag for CO2 before cleaning
percentQC(fluxes)

## Do the same for sensible heat
percentQC(fluxes,var="H")

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

## Find the percent of each QC flag for CO2 after cleaning
percentQC(fluxes)

## Do the same for latent heat
percentQC(fluxes,var="H")

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