CalcFdcSpline generates a spline fit function for a flow duration
CalcFdcSpline(strDf, strCol = "q_cms")
The streamflow time series dataframe (e.g., output from
The name of the column containing the streamflow values (DEFAULT="q_cms").
CalcFdcSpline reads the percent exceedances generated by
CalcFdc and outputs a fitted spline function useful for
plotting or estimating flow at specified exceedance thresholds (e.g., 20%
A spline function fitted to flow (y) vs. flow exceedance probabilities (x).
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## Take a time series of observed 5-minute streamflow values for Fourmile ## Creek (stored in the dataframe obsStr5min.fc in the column "q_cms") that ## has already been processed through "CalcFdc" (so also contains a column ## named "q_cms.fdc") and return a spline fit function. ## Not run: fdc.obsStr5min.fc <- CalcFdcSpline(obsStr5min.fc, "q_cms") ## Use the spline function to estimate the flow value that is exceeded 20% of the time. fdc.obsStr5min.fc(0.2) > 0.72 ## End(Not run)
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