QMNA for a given return period — calcQMNAn • seinebasin2

Calculation of QMNA according to a return period. An adjustment to a Galton distribution (log-normal distribution) is realised.

Usage

calcQMNAn(x, return_period)

# S3 method for QMNA
calcQMNAn(x, return_period)

# S3 method for data.frame
calcQMNAn(x, return_period)

calcQMNA2(x)

calcQMNA5(x)

calcQMNA10(x)

Arguments

x: data.frame of flows (the first column should be a POSIXct), or a QMNA object (See calcQMNA)
return_period: numeric number of years

Value

numeric QMNA for the given return period

Details

Functions named calcQJMNA_[return_period] are also defined for commun indicators (2, 5, 10 years).

Examples

#! load data
data(L0123001, package = "airGR")

dfQ <- data.frame(DatesR = BasinObs$DatesR, Q = BasinObs$Qls / 1000)
calcQMNAn(dfQ, 5)
#>         Q 
#> 0.5001499