[ADMB Users] Error message

Mollie Brooks mbrooks at ufl.edu
Wed Jan 30 09:12:27 PST 2013

Hi Hai,

You should probably bound the variable to be positive. 
In the parameter section use this, but replace 0.001 and 10 with reasonable lower and upper bounds.
init_bounded_number x(0.001,10)


On 30 Jan 2013, at 12:49 AM, Hai Che wrote:

> Dear all,
> I kept getting the error message:
> Attempting to take the derivative of sqrt(prevariable x) at x=0
> after 30-40 iterations using ADMB. I tried different starting values and etc. Nothing helped. Could you help providing some suggestions on this problem?
> Hai
> _______________________________________________
> Users mailing list
> Users at admb-project.org
> http://lists.admb-project.org/mailman/listinfo/users

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