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beckzx

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[求助] matlab 提示Index exceeds matrix dimensions问题,求高手解决

求告诉解决。显示错误发生在该代码片段最后一行。Index exceeds matrix dimensions.
Error in MLMS7_tang (line 27)
        shear_x{level}(poff+m,poff+n) = ...
部分代码:
shear_x=cell(N,1);

[Mx, My]=size(qx);
poff = 4*t; % offset used for storing pressure, to allow i,j=0
shear_x{1}=zeros(Mx+2*poff,My+2*poff);
shear_x{1}(poff+(1:Mx),poff+(1:My))=qx;

for level=2:N,
       
        disp(['Calculating shear_x for level ' num2str(level)]);
       
        Mx = grid(level,1);
        My = grid(level,2);
        m=1:Mx;
        n=1:My;
        i=1+2*(m-t);
        j=1+2*(n-t);
       
        shear_x{level}=zeros(Mx+2*poff,My+2*poff);
       
        shear_x{level}(poff+m,poff+n) = ...
                0.25*shear_x{level-1}(poff+i,poff+j);
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