debugging a program

Question

som 2012-4-6

0
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https://ww2.mathworks.cn/matlabcentral/answers/34694-debugging-a-program

编辑： per isakson 2014-9-30

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,

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Answer 1

per isakson 2012-4-6

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https://ww2.mathworks.cn/matlabcentral/answers/34694-debugging-a-program#answer_43526

编辑：per isakson 2014-3-2

在 MATLAB Online 中打开

Why do you want to use KEYBOARD? That's not the best way - in my opinion. Thus, I would:

Put the code in a function.
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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Answer 2

per isakson 2014-3-1

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https://ww2.mathworks.cn/matlabcentral/answers/34694-debugging-a-program#answer_126651

Here are some links on debugging in Matlab

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Answer 3

Alex 2014-9-30

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https://ww2.mathworks.cn/matlabcentral/answers/34694-debugging-a-program#answer_153431

编辑：per isakson 2014-9-30

在 MATLAB Online 中打开

How do i fix this?

for i = 1:x_max
    for i = 1:y_max
        if(forests(i,j) == 1) %Plot Green grass
            rectangle ('position',[i-0.5,j-0.5,MapRes,MapRez],'FaceColor',ForColor)
            hold on
        end