seasindex: Seasonality Index
In lfstat: Calculation of Low Flow Statistics for Daily Stream Flow Data

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

Calculates the seasonality index.

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seasindex(lfobj,
          Q = 95,
          na.rm = TRUE)

`lfobj`	An object of class "lfobj"
`Q`	Which quantile to use (standard = Q95)
`na.rm`	Should missing values be ignored?

A list describing the arrow

`theta`	Angle in radians
`D`	Julian Date
`r`	Length

Daniel Koffler and Gregor Laaha

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

Laaha,G. Process Based Regionalisation of Low Flows, Band 198 von Wiener Mitteilungen, Inst. f\"ur Wasserbau u. Ingenieurhydrologie, Techn. Univ. Wien, 2006, ISBN 3852340896

seasindex

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data(ngaruroro)
#Start of the hydrological year (01/12) is taken as second breakday
seasindex(ngaruroro)

Loading required package: xts
Loading required package: zoo

Attaching package: 'zoo'

The following objects are masked from 'package:base':

    as.Date, as.Date.numeric

Loading required package: lmom
Loading required package: lattice
$theta
[1] 1.088807

$D
[1] 63.25046

$r
[1] 0.8552488