Matlab元胞嵌套元胞时如何转换成矩阵?

分块矩阵里还有分块矩阵，所以使用了元胞！但最后还是要将其转换成矩阵，用cell2mat好像不行！

??? Error using ==> cell2mat at 55
Cannot support cell arrays containing cell arrays or objects.
我跟你一样啊 做出来了告诉一声

clearall;clc;a=cell(2,10);forii=1:10a{1,ii}=zeros(2,2);a{2,ii}=ones(2,2);endb=cell2mat(a(2,:));