[ADMB Users] Error message

[Mollie Brooks]

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)

Mollie

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
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