[R] qq plot for 3-parameter lognormal distribution

[reezwan you]

Hi:
Could you please guide me how to do a qq plot for a 3-parameter lognormal curve. Here is an example from VGAM package to fit lognormal curve. I need to do a qq plot to check the fit.
Thanks.

lambda = 4
y = lambda + rlnorm(n <- 1000, mean=1.5, sd=exp(-0.8))
fit = vglm(y ~ 1, lognormal3, trace=TRUE)
Coef(fit)
summary(fit)

reez


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