[ADMB Users] Understanding the -dd output

[Edgar Gonzalez]

Hi,

After painstakingly working out my code and having it running, I've been running it with different pin's and having lots of nan's (ca. 90%) and when that doesn't happen the ADMB ends up at the limits of the parameters. Since I need parameter confidence intervals that's not good news.

I found on the internet that maybe the derivatives where not been correctly calculated and that by using -dd I could see if that's the case.

However, I don't understand the output:

Edgar$ ./mipdacmds6 -dd 0
>maxind = 7 maxg = 5878.4
>
>
> Enter index (1 ... 10) of derivative to check.  To check all derivatives, enter 0:   To quit  enter -1: 0
>
>
>   Checking all derivatives. Press X to terminate checking.
>   Enter step size (to quit derivative checker, enter 0): 1.e-6
>
>
>   If you want the derivatives approximated in order
>   of decreasing magnitude enter 1
>   Else enter 0
>1
>
>
>       X           Function     Analytical     Finite Diff;  Index
>  -7.13029e-03   4.21599e+04   5.87840e+03   5.87840e+03 ;     7 
>  -2.99721e-01   4.21599e+04   4.65079e+03   4.65079e+03 ;     5 
>   3.16081e-01   4.21599e+04   3.47460e+03   3.47460e+03 ;     2 
>   3.20906e-01   4.21599e+04   3.21187e+03   3.21187e+03 ;     8 
>  -1.55476e-01   4.21599e+04   2.80267e+03   2.80267e+03 ;    10 
>   1.17485e-01   4.21599e+04   1.26323e+03   1.26323e+03 ;     3 
>   3.65032e-02   4.21599e+04  -1.20355e+03  -1.20355e+03 ;     9 
>   2.57356e-01   4.21599e+04   8.90272e+02   8.90272e+02 ;     6 
>   1.34974e-02   4.21599e+04   8.19416e+02   8.19416e+02 ;     1 
>  -1.05949e-01   4.21599e+04   5.14226e+02   5.14225e+02 ;     4 

Could anyone tell me if there's a problem there with the derivatives?

Thanks in advance,

Edgar J. González
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