use for loop

Question

Pan 2012-5-6

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/37556-use-for-loop

I want to use "For loop".

Current, I set up a matrix(idx=zeros(1,10);),then the matrix have 10 values.

I want to use the "For Loop" catch the 10 values this is my current code

iii=1;
for iii=1:idx(ik)          %iend
         iframe(iii)=idx;
         iii=iii+1;
         for jjj= idx(iii):idx(iii+1)      
          imshow(uint8(xy(:,:,:,iii))) 
         end
end

please tell me what is error.

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Answer 1

Wayne King 2012-5-6

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在 MATLAB Online 中打开

Please format your code and show your erros. What are you trying to do with your loop, just display slices of your image set?

Why not just:

   for iii = 1:10  %or however many slices there are
     imshow(uint8(xy(:,:,:,iii)));
   pause(0.5);
   end

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Pan 2012-5-6

the error is

Error in ==> bookentropy at 110

imshow(uint8(xy(:,:,:,jjj)))

Image Analyst 2012-5-6

Well which is it: iii or jjj? Regardless, learn to use the debugger (so you can solve things quickly without waiting on us), set a breakpoint on the imshow() line, and then do this in the command window:

iii

jjj

size(xy)

min(xy(:))

max(xy(:))

Then, if you can't figure out what's wrong, come back here for help.

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