load cell_test
One way:
% get the size of each matrix in cell_test(:,1)
sz = cellfun(@size,cell_test(:,1),'UniformOutput',false);
sz = vertcat(sz{:});
% max number of columns:
col_max = max(sz(:,2));
% function that appends columns of zeros (to fill to col_max)
% to a matrix m of size s:
f = @(m,s)[m zeros(s(1),col_max-s(2))];
% apply that function to each matrix in cell_test(:,1)
% and store the results in cell array C:
C = cellfun(f,cell_test(:,1),num2cell(sz,2), ...
'UniformOutput',false);
% vertically concatenate all matrices in C together:
M = vertcat(C{:})
Another way:
% get the size of each matrix in cell_test(:,1)
sz = cellfun(@size,cell_test(:,1),'UniformOutput',false);
sz = vertcat(sz{:});
% keep track of row offsets, for where to assign each matrix into the
% result matrix:
rows = cumsum([1; sz(:,1)]);
% initialize result matrix:
M = zeros(rows(end)-1,col_max);
% loop over cell_test(:,1) and put each matrix in place in the result
% matrix:
for ii = 1:size(cell_test,1)
M(rows(ii):rows(ii+1)-1,1:sz(ii,2)) = cell_test{ii,1};
end
% show the result:
disp(M);
