For loop Stoping after saving

Question

Maria Jaramillo 2018-7-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/409690-for-loop-stoping-after-saving

评论： Maria Jaramillo 2018-7-10

In my program I created a for loop that goes through different parameter values for processing an image and at the end it saves each image with the different parameter value. The only problem is that it only goes through the first iteration. 1. program load all paramater values 2. for loop

for JitterAmp = 0:0.33:0.66
  for TarScale = 0.001:0.100:1
 % does all calculations
 % saves all images 
if Nbits > 16
   fname = [nameString, '.raw']
end
cd(oldfolder);  % this contains the pathname where file is to be saved
   % it then simData with bit numbers
  if Nbits > 16
     writeSimData (oldfolder, fName, uint32(F5));
end 
end
end

The program works for only the first iteration where JitterAmp is 0 and tarScale is 0.001. After it saves it , the program stops. What can I do?

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Answer 1

Image Analyst 2018-7-10

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/409690-for-loop-stoping-after-saving#answer_328276

You'll just have to step through it line by line to find out where it gets kicked out of the for loop, because that code looks fine to me.

http://blogs.mathworks.com/videos/2012/07/03/debugging-in-matlab/

Regarding your for loop values, you'd also better have a look at the FAQ: https://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F If you don't fully understand that (which it appears that you don't) then you'll run into trouble.

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Image Analyst 2018-7-10

When I do it, it does JitterAmp 3 times, and TarScale 10 times for each JitterAmp, for a total of 30 times in the inner loop. You say it exits after only one time, not 30, so you ARE getting kicked out of the loop for some reason. Do you know how to set breakpoints and step through the debugger?

Maria Jaramillo 2018-7-10

Yes! I see what you are saying. Let me see if I can figure it out. I am changing the parameters to Arrays instead as well. I read the FAQ you sent, and it makes sense that by incrementing the values by 0.33 it will not be exact.

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