how do i create a binary [0,1]?

Question

sharifah shuthairah syed abdullah 2018-5-15

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/400770-how-do-i-create-a-binary-0-1

编辑： semi legend 2018-11-11

how can i write to declare that x will be variable for binary 0,1

    if x(i,j)=1 ;
       else (x(k,q)= 0;
    end;

i want to put it in my coding below

    clc;
    clear;
    %sum sum sum sum(fik*djq*xij*xkq)
    %i,k= facilities
    %j,q= location
    %f(i,k)= flow between facilities i and k
    %d(j,q)= distance between locations j and q
    %xij = 1 if facility i is assigned to location j and if otherwise, xij = 0
    % Flow matrix: flow assigning facility i (column) to facility k (row)
    f = [0 5 7 9;
         5 0 4 6;
         7 4 0 3;
         9 6 3 0];
    %Distance matrix: distance assigning location j (column) to location q (row)
    d = [0 6 8 9;
         6 0 5 1;
         8 5 0 2;
         9 1 2 0];
     z= 0;
     nf= 4;
     nd= 4;
     for i=1:nf 
         for j=1:nf 
             for k=1:nd 
                 for q=1:nd 
                     z = min('z','f(i,k)*d(j,q)*x(i,j)*x(k,q)'); 
                 end
             end
         end
     end
    %Constraints
    %The first set of constraints requires that each facility gets exactly one 
    %location, that is for each facility, the sum of the location values 
    %corresponding to that facility is exactly one
     Constraints.constr1 = sum(x,2) == 1;
    %The second set of constraints are inequalities. These constraints specify 
    %that each office has no more than one facility in it.
     Constraints.constr2 = sum(x,1) == 1;
     disp (z);

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Answer 1

Image Analyst 2018-5-16

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https://ww2.mathworks.cn/matlabcentral/answers/400770-how-do-i-create-a-binary-0-1#answer_320371

在 MATLAB Online 中打开

Do you mean like this???

% x(i, j) = 1 if facility i is assigned to location j and if otherwise, xij = 0
% Flow matrix: flow assigning facility i (column) to facility k (row)
f = [0 5 7 9;
  5 0 4 6;
  7 4 0 3;
  9 6 3 0];
x = zeros(size(f));
[rows, columns] = size(f)
for row = 1 : rows
  for col = 1 : columns
    facility_i = col;
    facility_k = row;
    if f(row, col) == facility_k
      x(row, col) = 1;
    end
  end
end
x

Not exactly what i, j, and k mean. How are they related to row and column. If you say xij, then i=row and j=column, but then in your flow matrix explanation you say i is column, not row and you don't even mention j - you mention k which is row, but i was row. I'm confused (or you are).