prepareBaseline function

Build baseline signal

Runs fourier analysis on the input signal, to build baseline signal.

prepareBaseline(x, year.start = NULL, year.end = NULL,
  window.20 = FALSE)

Arguments

• x: streamflow object, as output from the asStreamflow() function
• year.start: Start of the year for estimating baseline, or NULL to interpret this from input data
• year.end: End of the year for estimating baseline, or NULL to interpret this from input data
• window.20: If TRUE, baseline is constructed using windowing (20 year windows) and bootstrapping. If FALSE, baseline is constructed for a single run between start and end year.

Returns

ssignal object containing the baseline signal

Examples

# load sample data
data("sycamore")
x = sycamore

# get streamflow object for the sample data
x.streamflow = asStreamflow(x)

# baseline for single run for all the years in input signal
bl.singlerun.all = prepareBaseline(x.streamflow)

# baseline for singlerun between the given start and end years
bl.singlerun.filtered = prepareBaseline(x.streamflow, year.start = 1961, 
                                         year.end = 2000)

# baseline with windowinng and bootstrapping on all years in the input signal
bl.windowed.all = prepareBaseline(x.streamflow, window.20 = TRUE)

# baseline with windowing and bootstrapping on given start year 
#  with end year inferred from singal
bl.windowed.filtered = prepareBaseline(x.streamflow, year.start = 1961, 
                                       window.20 = TRUE)