function saveCenters(path, patientID, cax, cm, data, nclass, nRealizations)
    %path is the core directory
    %cax are the mid intervals in images
    %cm are the interval durations (1,n)
    %data are the images
    %nclass is number of typical responses sought
    %nRealizations is number of realizations
    
    c1=size(cax,1);
    A=reshape(data,[],c1);
    
    if nclass==10
        fuzzyPar=1.5;
    end
    if nclass==20
        fuzzyPar=1.45;
    end
    
    if nclass==30
        fuzzyPar=1.4;
    end
    
    
    
    options=[fuzzyPar 100 1 true];
    
    dt=size(data);
    for j=1:nRealizations
        [centers,U]=fcm(A,nclass,options);
        for i=1:nclass
            code=sprintf('%s_%d_%d_center%d',patientID,nclass,j,i);
            ofile=fullfile(path,patientID,sprintf('%s_center.txt',code));
            try
               writematrix(centers(i,:),ofile,'Delimiter',',');
            catch ME
               dlmwrite(ofile,centers(i,:),',');
            end
            u=reshape(U(i,:),dt(1:3));
            headerInfoOut.data=single(u);
            headerInfoOut.content=sprintf('%s_centerWeight',code);
            nhdr_nrrd_write(fullfile(path,patientID, sprintf('%s_centerWeight.nrrd',code)),headerInfoOut,1);
        end
    end