Re: [R] VGAM Pareto

From: Ben Bolker <>
Date: Wed, 13 Jun 2007 17:09:52 +0000 (UTC)

livia <yn19832 <at>> writes:

> 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",

   Are you trying to fit the distribution to set of a values, or are you trying to fit a model with a Pareto error distribution (in which case you would be fitting the distribution to the observations within each group separately, or fitting the distribution with parameters changing as a function of covariates, depending on your mixture of factor and numeric predictors)? If the former, then there aren't any "fitted" values to be gotten.

   Perhaps if you say a little more about the problem you're trying to solve you will get more useful help.

  Also see and the answers to it. mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Wed 13 Jun 2007 - 17:18:07 GMT

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