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Nonlinear Estimation with Optimize
From: |
Thomas D. Dean |
Subject: |
Nonlinear Estimation with Optimize |
Date: |
Sat, 23 Aug 2008 14:34:34 -0700 |
Octave 3.0.2
I installed optim-1.0.3.tar.gz, and changed is_list() to islist() to
remove a warning message. The files are:
optim-1.0.3/minimize.m
optim-1.0.3/d2_min.m
optim-1.0.3/nelder_mead_min.m
I have a problem with argument syntax. I think I need to use minimize()
and pass a function that uses three arguments. I have a simplified
example.
Here is what I want to do (wrong?):
t = [3.3598, 26.4377, 89.6760, 211.5766, 414.1391, ...
716.1501, 1128.1406 ]';
for i=1:7
s(i,1)=1000*i;
end;
## I wanted to use s(i)=1000*i and then s=s'
## but, octave seemed to ignore that.
x0=[0,0,0]';
l={x0,s,t}; ## a list to pass to minimize
function r = fit(l)
a0=nth(l,1); b=nth(l,2); c=nth(l,3);
r = c - [b.^2,b,ones(7,1)]*a0;
end
[x,v,n]=minimize("fit",l) ## I want to use fit(x0,s,t)
What am I doing wrong?
tomdean
- Nonlinear Estimation with Optimize,
Thomas D. Dean <=