[R] Error survreg: Density function returned an an invalid matrix

[Therneau, Terry M., Ph.D.]

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-request at 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