Re: Question about fmins!

[rambovn]

Hi,
Thank you for your help. I tried many times but the error is still there.
And now after receiving your email, I also tried in the same you wrote,
creating one file, and put all things in in, finally running it, the error
is there. But when I changed ub = [20;20] and lb = -ub; then it worked :O.
Maybe you are right, I used an old version of samin. But can you tell me in
more details how to compile the new one? (for example, after download the
new file, where can I put it?...), I am bad at these things :(.
Thank you very much for your patience.
Regards
Anh

Michael Creel wrote:
> 
> Hmm, I don't see any problem. I put the following in a file named test.m
> 
> Contents of test.m:
> -------- cut here -------------
> 1;
> function a = f(x)
>          a = cos(x) + 0.01*(x-pi)^2;
> endfunction
> 
> # Set up the controls:
> ub = 20;
> lb = -ub;
> nt = 20;
> ns = 5;
> rt = 0.5;
> maxevals = 1e10;
> neps = 5;
> functol = 1e-10;
> paramtol = 1e-5;
> verbosity = 1;
> minarg = 1;
> 
> # Put them in a cell array:
> control = {lb, ub, nt, ns, rt, maxevals, neps, functol, paramtol,
> verbosity, 
> minarg};
> 
> # Call the minimizer (function argument also in cell array):
> samin("f", {-8}, control)
> 
> -------- cut here -------------
> 
> Then I run it from octave, and I get
> 
> octave:2> test
> 
> ================================================
> SAMIN results
> 
> Normal convergence
> 
> Convergence tolerances: Func. tol. 1.000000e-10 Param. tol. 1.000000e-05
> Obj. fn. value -1.000000
> 
>             parameter        search width
>              3.141593            0.000009
> ================================================
> ans =  3.1416
> octave:3>
> 
> How did you obtain samin? If you think you might have an old version,
> please get 
> the newest one from 
> http://octave.cvs.sourceforge.net/*checkout*/octave/octave-forge/main/optim/src/samin.cc?revision=1.8
> and compile it using "mkoctfile samin.cc"
> Cheers, M.
> 
> 

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