why the real matrix becomes complex number when transfered to cell

why the real matrix becomes complex number when transfered to cell?

many thanks to all !

This is all of my code operations. FD is a matrix with all real number.

I actually want to get the result of fincost, but I found that the final output （fin_cost andTermfin_cost）contained complex numbers.

I use the code “isreal” to distinguish and finally find that FY contains complex numbers.

please help me see what the problem is.

Thanks to all ！！

S=67
N=45% I'm sorry for a mistake that S and N are  equal to 67 and 45 repectively.
FY=cell(S,S)                                  
for i=1:1:S
    for j=1:1:S
        FY{i,j}=FD((i-1)*N+1:i*N,j) 
    end
end 

containsComplex=~isreal(FY); 
if containsComplex
    disp('complex。');
else
    disp('real。');
end

 FY_shape=cell(S,S)                                   
 for i=1:1:S
     for j=1:1:S
         FY_shape{i,j}=FY{i,j}(1:44)  
     end
 end 

fin_cost=cell(S,1)
  for i=1:1:S
  fin_cost{i,1}=zeros(44,1)   
            for j=1:1:S
                term3=FY_shape{i,i}.*FY_shape{j,j}
                term4=FY_shape{i,j}.^2
                term4(term4 == 0)=epsilon;  
                fin_cost{i,1}=fin_cost{i,1}+(term3./term4).^(1/14)
            end
  end
Termfin_cost= cell2mat(fin_cost)   

[Dyuman Joshi]

Running the code on random data works properly, outputs real numbers as per the input.

Please attach the values for FD and N, so we can test your code, replicate the result you get and provide feedback accoringly.

S = 5;
FD = rand(S,S)

FD = 5×5

0.2438 0.1441 0.0916 0.1334 0.4274 0.0714 0.5734 0.9830 0.2796 0.7792 0.7141 0.4899 0.9532 0.3925 0.4831 0.2044 0.4301 0.8051 0.0732 0.3697 0.8288 0.6571 0.2733 0.1687 0.0779

FY = cell(S,S);
N = 1;

for i=1:1:S
    for j=1:1:S
        FY{i,j}=FD((i-1)*N+1:i*N,j);
    end
end
FY

FY = 5×5 cell array
    {[0.2438]}    {[0.1441]}    {[0.0916]}    {[0.1334]}    {[0.4274]}
    {[0.0714]}    {[0.5734]}    {[0.9830]}    {[0.2796]}    {[0.7792]}
    {[0.7141]}    {[0.4899]}    {[0.9532]}    {[0.3925]}    {[0.4831]}
    {[0.2044]}    {[0.4301]}    {[0.8051]}    {[0.0732]}    {[0.3697]}
    {[0.8288]}    {[0.6571]}    {[0.2733]}    {[0.1687]}    {[0.0779]}

[Walter Roberson]

We recommend that you do not use i or j for loop control variables, as those are both also sqrt(-1)

[Dyuman Joshi]

There does not seem to be any complex number in the final output.

All values stored in the cell array are real, see below -

load('FD.mat');

%Check for values in FD
all(isreal(FD), 'all')

ans = logical
   1

S=45;
N=6;
FY=cell(S,S);
for i=1:1:S
    for j=1:1:S
        FY{i,j}=FD((i-1)*N+1:i*N,j);
    end
end
FY

FY = 45×45 cell array
  Columns 1 through 12

    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}

  Columns 13 through 24

    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}

  Columns 25 through 36

    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}

  Columns 37 through 45

    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}

%Check for values in FY
all(cellfun(@(x) all(isreal(x)), FY), 'all')

ans = logical
   1

Answer 1

[Chunru]

You won't get complex output if FD is real. Check type of FD.

S=15; %smaller 
N=6;
FD = rand(N*S, S);
FY=cell(S,S)    

FY = 15×15 cell array
  Columns 1 through 12

    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}

  Columns 13 through 15

    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}

for i=1:1:S
    for j=1:1:S
        FY{i,j}=FD((i-1)*N+1:i*N,j);
    end
end
FY

FY = 15×15 cell array
  Columns 1 through 12

    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}    {6×1 double}

  Columns 13 through 15

    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}
    {6×1 double}    {6×1 double}    {6×1 double}

whos

  Name         Size            Bytes  Class     Attributes

  FD          90x15            10800  double              
  FY          15x15            34200  cell                
  N            1x1                 8  double              
  S            1x1                 8  double              
  cmdout       1x33               66  char                
  i            1x1                 8  double              
  j            1x1                 8  double