plotDurationUncertainty: plotDurationUncertainty

In bgctw/RespChamberProc: Processing Data from Respiration Chambers

plotDurationUncertainty

Description

plot the increase of uncertainty with decreaseing measurement duration

Usage

plotDurationUncertainty(ds, colTime = "TIMESTAMP", 
    fRegress = c(exp = regressFluxExp, lin = regressFluxLinear, 
        tanh = regressFluxTanh), ..., durations = seq(max(65, 
        resFit0$tLag), max(times0), length.out = nDur + 
        1), nDur = 20, maxSdFlux = 1)

Arguments

ds
colTime	column name of time [s]
fRegress
...	further arguments to calcClosedChamberFlux
durations
nDur	number of durations to check
maxSdFlux	maxium allowed standard deviation of flux in [mumol/s]

Details

Produces a plot with standard deviation of the flux estimate versus the duration of the measurment. The lines correspond to the given maxium acceptable standard deviation and the duration that matches this criterion.

Value

tibble result of calcClosedChamberFlux for the minimum duration, with additional component

statAll

tibble: each row a fit for a given duration

Author(s)

Thomas Wutzler, Oscar Perez Priego

Examples

#data(chamberLoggerEx2)
ds <- subset(chamberLoggerEx2, iChunk == 99)	
#plot( CO2_dry ~ TIMESTAMP, ds )
resDur <- plotDurationUncertainty( ds, colTemp = "AirTemp", volume = 0.6*0.6*0.6
	, maxSdFlux = 0.8
	, nDur = 10
	, durations = c(100,120,150)
)
resDur$duration
#plot( flux ~ duration, resDur$statAll[[1]] )
#plot( sdFlux ~ duration, resDur$statAll[[1]] )

bgctw/RespChamberProc documentation built on Jan. 4, 2024, 6:12 a.m.