MATLAB: Debugging a program

debug

Hi all; I've written a program including two loops and I want to debug it using "keyboard " command.
 for n=1:1000
  for qq=1:100
      tsd (n,qq)= rand(1); 
      keyboard
  end
 end
I want to see the "tsd " values just in "n=10 " and "qq=50, 70; 89" . How can I do this using "keyboard" and "return" commands. I look forward to see your reply,

Best Answer

Why do you want to use KEYBOARD? That's not the best way - in my opinion. Thus, I would:
  1. Put the code in a function.
  2. Use conditional breakpoints
However, try to replace the line "keyboard" by
    if n==10 && ( qq==50 || qq==70 || qq==89 )
      keyboard
    end
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