matlab - replacing a value in all columns with value of that column -

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How do I change all the 1s in all the columns with the number of that column? I can already make columns with columns:

Output (output (:, 3) == 1,3) = 3; Output (output (,, 4) == 1,4) = 4;
Output (output (,, 5) == 1,5) = 5; # Etc ...

But I think writing an idiot for every single column.

You can use it for: 

  [rowIdx, ColIdx] = address (output == 1); Output (output == 1) = colled;

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