Question

Given a binary matrix A of size n x k, i would like to create an Label of size n x 1 such that the Label(1) contains a string which has the columns numbers of A(1,:) where the entries are 1.
for example if A(1,:) = [ 0 1 0 1 ] then Label(1) = ’24’
if A(2,:) = [ 0 0 1 0] then Label(2) = ‘3’
if A(3,:)= [ 1 1 1 1] then Label(3) = ‘1234’ and so on

Answer 1

Label = {};
for i = 1:size(A, 1)
    Label{i, 1} = regexprep(num2str(find(A(i, :))), ' ', '');
end