[R] fit two-parameter lognormal distribution, l-moments

Tonja Krueger tonja.krueger at web.de
Mon Feb 14 16:35:15 CET 2011


Dear R helpers,

I would like to fit a two-parameter lognormal distribution to my data using l-moments. Is there a package that provides this feature? 

I used the “lmom”-package to fit the three-parameter lognormal distribution to my data as shown beneath. I would like something similar for the two-parameter lognormal distribution.

library(lmom)
data<-c(6.8044, 6.4422, 6.0900, 6.3978, 6.2156, 5.8734, 6.3112, 6.1590, 6.2368, 6.1746, 6.0124, 6.2202, 5.7680, 5.8958, 6.5836, 5.9614, 5.9892, 6.2870)
y.data<-seq(5.6,6.8,0.01)

lmom <-samlmu(data)
lfit.lognorm<- pelln3(lmom)
lcdfln3<- cdfln3(y.data,lfit.lognorm)

Thank you, Tonja


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