How to solve Too many input arguments error? Error in Fminsearch (line 200) fv(:,1) = funfcn(x,varargin{:});

Hello,

I am doing the modelling and I am trying to find the best fit parameter with mini errors.

the experimental data is MSM, which has 6 coloums indicating 6 different measurements.

I would like to use loop to find the fits for those 6 models.

Here is my code

%% minimization / parameter estimation
% specify function handle to function vpe
fh=cell(6,1);
global pesmin 
global pelmin
global Vsmin
global Vlmin
pesmin = rand(2,6); % estimated parameter
Vsmin= rand(1,6); % error
for n=1:6; %function handle
 fh{n}= @(pes)vpe(pes(:,n),p,MSM(:,n),erps(:,n),n);
end
for n=1:6; % search for the mini error
[pesmin(:,n),Vsmin(n)] = fminsearch(fh{n},reshape(pesmin(:,n),[2,1]));
end

this loop can only run once. as n=2 or >2, the error comes out. the error shows Index at position 2 is out of range of the array (cannot exceed 1). I really did not get where is the position 2. what does it mean position 2 is out of range of the array.

for n=1:c/2; % search for the mini error
[pesmin(:,n),Vsmin(n)] = fminsearch(fh{n},reshape(pesmin(:,n),[2,1]));
end

Besides, it also shows

[feihong xu]

Besides, it also shows the error, Fminsearch (line 200) fv(:,1) = funfcn(x,varargin{:});

[Walter Roberson]

pes(:,n) 

pes does not exist in the code you posted, so we do not know how large it is.

Likewise for MSM and erps.

[feihong xu]

pes is 2x6 matrix. p is 25x1. MSM is 25x6. erps is 25 x6.

I guess the error is from the function handle. I wanna pes changes as a colomun 2x1 since pes is 2x6.

 fh{n}= @(pes)vpe(pes(:,n),p,MSM(:,n),erps(:,n),n);
 

But this code does not work

  fh{n}= @(pes(:,n))vpe(pes(:,n),p,MSM(:,n),erps(:,n),n);

Answer 1

[Matt J]

This fh handles should be,

fh{n}= @(x)vpe(x,p,MSM(:,n),erps(:,n),n);

[feihong xu]

Thank you very much! my code works now!!!!!!!!!!!!!