The error message states that there is an invalid value for the density. A long stretch of code is not very helpful in understanding this. What we need are the definition of your density -- as it would be written in a textbook. This formula needs to give a valid response for the range -infinity to +infinity. Or more precisely, for any value that the maximizer might guess at some point during the iteration.

Terry T.


On 11/14/2015 05:00 AM, r-help-requ...@r-project.org wrote:
Thanks Terry but the error persists. See:

>library(foreign)> library(survival)> library(VGAM) > mypareto <- 
list(name='Pareto',+                  init=

remainder of message trucated

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