Matlab: trasform cell arrays into a matrix

Hi,

I want to trasform U (attacched) in a matrix Z 5 x 12

Z=[0 0 0 0 0 0 0 0 0 0 1933724 260957; 341255 0 0 0 0 0 0 0 0 0 16907 0; 23261 0 0 0 0 0 0 153505 0 420315 0 15372; 0 0 0 0 0 0 0 0 0 5535878 0 0; 0 0 0 0 0 0 0 0 0 16516 0 316637]

Can you help me? Thanks

Answer 1

[Andrei Bobrov]

zz = cat(1,U{:});
zz(cellfun(@isempty,zz)) = {0};
Z = cellfun(@(x)x(1),zz);