how to perform for loop;

      dim=64;
      [kx,ky]=meshgrid(-1:2/(dim-1):1);
      circ=sqrt(kx.^2+ky.^2)<1;
      kx=kx/2;
      ky=ky/2;
      alp=asin(0.8);  
      k0=1/sin(alp);
      k=256;
      kz=sqrt(k0^2-(kx.^2+ky.^2));
      Gx=sqrt(k0./kz).*((k0*ky.^2+kz.*kx.^2)./(k0*(kx.^2+ky.^2)));
      Gy=sqrt(k0./kz).*((kz-k0).*kx.*ky)./(k0*(kx.^2+ky.^2));
      Gz=sqrt(k0./kz).*(kx./k0);

      z=-64:1:63;
      [r,c]=size(z);
      mz=pi*64/(256);
      Ex=zeros([k,k,c]);
      Ey=zeros([k,k,c]);
      Ez=zeros([k,k,c]);
      for jj=1:c
      Ex(:,:,jj)=fftshift(fft2(exp(1i*kz*z(jj)*mz).*Gx.*circ,k,k));
      Ey(:,:,jj)=fftshift(fft2(exp(1i*kz*z(jj)*mz).*Gy.*circ,k,k));
      Ez(:,:,jj)=fftshift(fft2(exp(1i*kz*z(jj)*mz).*Gz.*circ,k,k));
      end
      I =Ex.*conj(Ex)+Ey.*conj(Ey)+Ez.*conj(Ez);
      M=I(k/2,:,:);
      M1=squeeze(M).';
      figure(1)
      imagesc((M1));colormap gray

I have problem to perform for loop operation, I used above method to perform

for loop operation. Can anyone help me to perform this for loop operation in

other method it will be great helpfor me

thanking you in advance for your kind help

[per isakson]

Your script runs here (R2012a, 64bit, Windows7) and produces an image. I cannot see any problem.

Do you get a warning or error message? You need to be more specific.