Nelder-Mead optimization

[Carrico, Paul]

Dear All,
 
I would like to re-use an routine written more than a year ago ... but it failed ;
 
I can understand thinks have been done in order to improve the function, but :
- I don't remember what's optimbase_configure  ...
- what's wrong ?
 
Any advice  ?
 
Regards
 
Paul
 
 
 
<http://www.esterline.com/advancedsensors/NewsnbspnbspPressCenter/Greetings2011/tabid/2628/Default.aspx> 
The main routine is something like :
// 8 parameters
lower_bounds = [0.22 2.337 18.72 14.859 19.05 14.5 1.85 0.];
upper_bounds = [0.28 2.388 18.771 15.0119 19.075 14.6 1.95 0.68];
data = list(lower_bounds,upper_bounds);

printf("\n  The initial parameters are the following :\n"); 
thickness = 0.28;
height = 2.380;
D_ext = 18.771;
D_int = 14.859;
groove_ext_radius = 19.075;
groove_int_radius = 14.50;
housing_deepth = 1.85;
COEF_FRICTION = 0.4;

initial_parameters = [thickness height D_ext D_int groove_ext_radius groove_int_radius housing_deepth COEF_FRICTION];

// CPU time : start
time_start = tic();

// Nelder-mead optimization
nm = neldermead_new ();
nm = neldermead_configure(nm,"-numberofvariables",8);      // Number of variables
nm = neldermead_configure(nm,"-function",optimization_nm);
nm = neldermead_configure(nm,"-x0",initial_parameters');        // BE CAREFUL : nitial_parameters' = transposed matrix
nm = neldermead_configure(nm,"-method","box");                  // box => brackets are taken into account
nm = neldermead_configure(nm,"-maxiter",10000);
nm = neldermead_configure(nm,"-boundsmin",lower_bounds);
nm = neldermead_configure(nm,"-boundsmax",upper_bounds);
nm = neldermead_configure(nm,"-costfargument",data);
nm = neldermead_configure(nm,"-simplex0method","randbounds");
[nm,SSE] = neldermead_function(nm,initial_parameters');
nm = neldermead_search(nm);                            // start optimization process
optimized_parameters = neldermead_get(nm,"-xopt");     // extract of the results
nm = neldermead_destroy(nm);
 
The error message is :
AVERTISSEMENT : La fonctionnalité optimbase_configure est obsolète.
AVERTISSEMENT : Veuillez utiliser -function à la place.
AVERTISSEMENT : Cette fonctionnalité va être définitivement supprimée dans Scilab 5.4.1
#########################################################
            * Iteration No : 1
            * thickness = 0.28
            * height = 2.38
            * D_ext = 18.771
            * D_int = 14.859
            * groove_ext_radius = 19.075
            * groove_int_radius = 14.5
            * housing_deepth = 1.85
            * COEF_FRICTION = 0.4
!--error 58 
Nombre erroné d'arguments d'entrée.at line      73 of function __optimbase_f__ called by :  
at line      66 of function optimbase_function called by :  
at line       7 of function neldermead_function called by :  
[nm,SSE] = neldermead_function(nm,initial_parameters');
at line      65 of exec file called by :   

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