are.lmom.valid {lmomco} | R Documentation |
The second through fifth order L-moments are perhaps the most common in analysis situations. These L-moments have particular constraints on magnitudes and relation to each other. This function evaluates and L-moment object whether the bounds for L-scale (λ_2 > 0), L-skew (|tau_3| < 1), L-kurtosis (0.25(5tau_3^2 - 1) <= tau_4 < 1), and |tau_5| < 1 are satisfied.
are.lmom.valid(lmom)
lmom |
A L-moment object created by lmom.ub or pwm2lmom . |
TRUE |
L-moments are valid. |
FALSE |
L-moments are not valid. |
W.H. Asquith
Hosking, J.R.M., 1990, L-moments—Analysis and estimation of distributions using linear combinations of order statistics: Journal of the Royal Statistical Society, Series B, vol. 52, p. 105-124.
Hosking, J.R.M. and Wallis, J.R., 1997, Regional frequency analysis—An approach based on L-moments: Cambridge University Press.
lmr <- lmom.ub(rnorm(20)) if(are.lmom.valid(lmr)) print("They are.")