rfa: Regional Frequency Analysis
In lfstat: Calculation of Low Flow Statistics for Daily Stream Flow Data

Description Usage Arguments Author(s) References See Also Examples

This function uses J.R.M. Hosking's package produce an object of class "rfd", containing the specification of the regional frequency distribution.

1	rfa(lflist, n = 7, event = 100, dist = c("wei","gev","ln3","gum","pe3"))

`lflist`	A list of "lfobj"s
`n`	MAM-n is used (e.g. n=7 means MAM7)
`event`	A value for T, e.g. event = 100 means the 100 years extreme low flow event
`dist`	A vector of distribution to fit, the names are according to Hostking's in his "lmom" package. Can be an of "wei","gev","ln3","gum","pe3".

Daniel Koffler and Gregor Laaha

Manual on Low-flow Estimation and Prediction, Operational Hydrology Report No. 50, Koblenz 2009

J. R. M. Hosking (2012). L-moments. R package, version 1.6. URL: http://CRAN.R-project.org/package=lmom.

lmom,lmomRFA

data(ngaruroro)

#Toy example to get some more "rivers"
seventies <- subset(ngaruroro, hyear %in% 1970:1979)
eighties <- subset(ngaruroro, hyear %in% 1980:1989)
nineties <- subset(ngaruroro, hyear %in% 1990:1999)

toyrfa <- rfa(list(seventies,eighties,nineties), n=3,dist = "gev")

# Now you can work on using Hoskings lmomRFA-package, e.g.
require(lmomRFA)
regquant(c(1/1000,1/100),toyrfa)
sitequant(1/100,toyrfa)