Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 40000-by-1. Error in mat (line 73) C(:,s) = g(:);. how to solve this error?

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Shan Sha 2018-8-23

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https://ww2.mathworks.cn/matlabcentral/answers/415929-unable-to-perform-assignment-because-the-size-of-the-left-side-is-1-by-1-and-the-size-of-the-right-s

回答： Shan Sha 2018-8-23

This is my code

lx=double(Ix);
ly=double(Iy);
lxy=double(Ixy);
lxx=double(Ixx);
lyy=double(Iyy);
g = sqrt(lx.*lx + ly.*ly); 
        d =  sqrt( (lxx-lyy).^2+ 4*lxy.^2 ); 
   figure, imshow(g),title('I1');
   figure, imshow(d),title('I2');
   s=sigma;
   SI = 0.5-1/pi*atan((-lxx-lyy)./sqrt((lxx-lyy).^2+ 4*lxy.^2));
   imshow(SI)
   SI_label= atan_vq(SI, Ls);   
        SI_code(:,s) = SI_label(:);
         C(:,s) =  g(:); 
        C(:,s + 1*length(F)) =  d(:);
        G2=C(:,1:3);
    D2=C(:,4:6); % d
    r=2/pi*atan(Coef*D2./G2);

help me to solve this error.

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Stephen23 2018-8-23

编辑：Stephen23 2018-8-23

"help me to solve this error."

Simple: don't try to allocate 40,000 elements into one element.

Using sigma as an index looks quite suspicious to me... but in any case as we do not have the complete code, any values, or any explanation of what the badly aligned code should be doing, we will have to rely on guessing what you are doing. If you want help, please upload an MWE by clicking the paperclip button.

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