hi i have a problem in running the loop for my code given below

the problem is it is taking s value only as p i.e 512 i wanted to run for the range s=1 to 512, so as to get q as 512 values each for which of s value . I(:,:,1) r channel for lena image

ya=((1+(I(:,:,1).^2)));
  p=512;
    for s=1:p
               Ya=ya.^(s);
               k= fft2(allpixel);
               f=abs(fft2(allpixel)).^2;
               q=Ya.*f;
               imshow(q,[])

                 total=(1/2*pi).*sum(sum(q));
      end

[KALYAN ACHARJYA]

what is ya? I is gray Image? What about allpixel? Clarify, so that I can check it.

[juveria fatima]

I(:,:,1) is red channel of lena image

ya=((1+(I(:,:,1).^2)));

[KALYAN ACHARJYA]

OK, how you find the "allpixels"? Better share complete code

[Adam]

Everything in your for loop is set to be overwritten each time through so yes, you will, at the end, be left with only the final result and plot, having thrown away all previous results and plots.

You need to use an array with indexing to store results, e.g.

q(s) = ...

having first presized q before the loop.

I don't know what you expect to happen with your imshow in the loop though. I assume you would want this outside the loop.

[juveria fatima]

actually am trying to implement sobolev space on an lena image sobolev equation is attached as jpeg attachments kindly refer

[juveria fatima]

i think now my doubt is clear please help me to run the loop for s=1:512 range

[Stephen23]

@juveria Fatima: you need to preallocate the output array and then use indexing in the loop.