LMFnlsq2

Solution of one or more nonlinear equations in the least squares sense.

Description

The function is an improved version of the function LMFnlsq widely tested on the nonlinear regression, curve fitting and identification problems. Better description is in the complementing file LMFnlsq2test.pdf.

Warning: The option 'Display' is changed for better control of intermediate results output. See help LMFnlsq2.

• Required Products: MATLAB
• MATLAB release: MATLAB 7.3 (R2006b)
• Other requirements: The demo program LMFnlsq2test needs functions inp, fig, separator and LMFnlsq2 from File Exchange

[Jose]

what is the use of Basdx if it is not used
plus it takes the value 0.25*xf.Xtol so Xtol should be enough
and in the comments it should be 25e-9 ???

[Jose]

actually LMFnlsqtest.m should have all the LMFnlsq replaced with LMFnlsq2

LMFnlsq.m:
line 191 xf.Basdx = 0.25*xf.Xtol;
should be xf.Basdx = 0.25*xf.XTol;

[Jose]

LMFnlsqtest.m on line 29 should be:
if ~exist('LMFnlsq2.m','file'), Id = [Id 'LMFnlsq2 (Id=39564 )']; end

[Jose]

Line 286, it should be elseif lb~=n

elseif le~=n
error(['Dimensions of vector dx ',num2str(lb),'~=',num2str(lx)]);
end

[Jose]

Lines 301 and 311 do the same, one should be enough:

SS = r'*r;

feval(printf,ipr,-1); % Table header
dx = zeros(n,1);
res= 1;
cnt=0;
feval(printf,ipr,cnt,res,SS,x,dx,l,lc) % Initial state

[A,v] = getAv(FUN,JAC,x,r,bdx);
%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SS = r'*r;