Nothing
"parray" <-
function(lmom, xi=NULL, checklmom=TRUE,...) {
para <- rep(NA,2)
names(para) <- c("xi","alpha")
if(length(lmom$L1) == 0) { # convert to named L-moments
lmom <- lmorph(lmom) # nondestructive conversion!
}
if(checklmom & ! are.lmom.valid(lmom)) {
warning("L-moments are invalid")
return()
}
if(is.null(xi)) {
para[2] <- 2*lmom$L2 / (sqrt(pi)*(sqrt(2) - 1))
para[1] <- lmom$L1 - para[2]*sqrt(pi/2)
}
else {
para[1] <- xi
para[2] <- (lmom$L1-xi)/sqrt(pi/2)
}
return(list(type='ray', para=para, source="parray"))
}
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