seasratio: Seasonality Ratio
In lfstat: Calculation of Low Flow Statistics for Daily Stream Flow Data

Description Usage Arguments Details Value Author(s) References See Also Examples

Calculates the seasonality ratio for two seasons.

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seasratio(lfobj,
          breakdays,
          Q = 95)

`lfobj`	An object of class "lfobj"
`breakdays`	One or two dates defining the summer/winter season
`Q`	Which quantile to use (standard = Q95)

If breakdays is a single day, e.g. "01/06", the start of the hydrological year is taken as the second breakday. If other seasons are to be specified, a vector of two breakdays is needed.

The seasonality ratio.

Daniel Koffler and Gregor Laaha

Laaha, G. and Bl\"oschl, G. (2006), Seasonality indices for regionalizing low flows. Hydrol. Process., 20

seasindex

data(ngaruroro)
#Start of the hydrological year (01/12) is taken as second breakday
seasratio(ngaruroro, breakdays = "01/07")

#Two breakdays
seasratio(ngaruroro, breakdays = c("01/03","01/09"))