I cannot figure out how to increase the max iterations of the function. I am pretty new at this. I have three conditions of reaction time (Compatible, Incompatible and none)

%Sample Script from tool box egfit%

function R=egfit(data, params, options) % versio2.2 27/02/07 % uses fmin nsearch instead of fmins % (c) Yves Lacouture, Universite Laval

[n,m]=size(data); if min(n,m) > 1 error('First argument must be a vector'); end if n == 1 %case of a row vector of data data = data'; n = m; end if min(data)<=0 % get rid of zeros and negative numbers warning('data include zero(s) and/or negative number(s)'); nc=length(find(data<=0)); fprintf('%d values out of %d are truncated\n', nc, n); data=data(find(data>0)); end if (nargin > 1 & ~isempty(params)) % explicit starting parameter values set by user mu=params(1); sig=params(2); tau=params(3); else tau=std(data).*0.8; % set defaut starting parameter values if not explicit mu=mean(data)-tau; % uses heuristic values sig=sqrt(var(data)-(tau^2)); end if (nargin > 2 & ~isempty(options)) % explicit options values set by user and pass to fmins opts(1:3)=options(1:3) % termination, function tolerances and maximum number of iterations else opts=[ 1.e-4,1.e-4]; % default values for termination and function tolerances opts(3)=400*length(data); % default max number of iterations end

%optionsfmin=optimset('TolX',opts(1),'TolFun',opts(2),'MaxIter',opts(3)); % was in version 2.2; should be MaxFunEvals

optionsfmin=optimset('TolX',opts(1),'TolFun',opts(2),'MaxFunEvals',opts(3));

pinit = [mu sig tau]; % put initial parameter values in an array

% [R,opt] = fmins('eglike',pinit,opts,[],data); % based on old function fmins [R,fval,outf,op]=fminsearch(@(params) eglike(params,data),pinit,optionsfmin);

if (outf<1) disp(op) end

Here is an example of the problem that I am encountering from my command window:

"Exgaussianfunction=egfit('VarName3')

Exiting: Maximum number of iterations has been exceeded

         - increase MaxIter option.

         Current function value: -Inf 

    iterations: 600

     funcCount: 2802

     algorithm: 'Nelder-Mead simplex direct search'

       message: 'Exiting: Maximum number of iterations has been exceeded…'

exgaussianfunction =

   91.0638   18.7645    0.5234"

[Alan Weiss]

Please mark your code with the {} Code button so that we can read it more easily.

Alan Weiss

MATLAB mathematical toolbox documentation