MATLAB: For loop in a function

functionloops

 %function [temp_finalmean]=first_difference_mean
%calculate the first difference between two column
files=dir('*.mat');
temp_save=zeros(30,359);
for m= 1:length(files)
    load(files(m).name)    
    temp_temp=zeros(30,359);
    temp_thickness=cell2mat(T(1,1));
    temp_thickness=image2polar(temp_thickness,peaks(1,1)*200/668,peaks(2,1)*200/668,'counterclockwise',[],1,pi/180,'linear');
    temp_size=size(temp_thickness);
    temp_thickness(62:temp_size(1),:)=[];
    temp_thickness(1:31,:)=[];
    disp(['Loading ' num2str(m) ' files'])
    for n=1:359
        for k=1:30
            temp_temp(k,n)=temp_thickness(k,n+1)-temp_thickness(k,n);
        end
    end
    temp_save=temp_save+temp_temp;
end
    temp_finalmean=temp_save/length(files);
end
If I remove the top line and bottom line(i.e. the function and end),then I will have my code run perfectly. I mean I can get different result from the same code, it is strange… Is it I can't use load() in a function or something happened?
Thank you

Best Answer

When you have end matching function then you are creating a static workspace where it is not permitted to "poof" variables into existence using eval() or assignin() or evalin() -- and so, indirectly, also not using load() or syms() . You should use the output form of load() and pull the required information out of the structure that is returned.
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