[R] VGAM Pareto

[livia]

I would like to fit a Pareto Distribution and I am using the following codes

fit=vglm(ycf1 ~ 1, pareto1(location=alpha), trace=TRUE, crit="c")
fitted(fit)

But the fitted values turn out to be the same for each observation. I guess
the problem is with "ycf1 ~ 1",

I would be grateful if anyone can give me some advice on how to define the
formula.

Many thanks
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