MATLAB: Repeating elements in a matrix.

repeating elements in a matrix

A=zeros(3,4)
A =
     0     0     0     0
     0     0     0     0
     0     0     0     0
>> [nRows,nCols] = size(A); A(1:(nRows+1):nRows*nCols) = 1
A =
     1     0     0     0
     0     1     0     0
     0     0     1     0
Appreciate your kind assistance on how can I write so that my matrix becomes :
A=[1 1 0 0; 0 1 1 0; 0 0 1 1]
Thanks

Best Answer

A=zeros(3,4);
n = size(A,1);
A([1:n+1:end,n+1:n+1:end]) = 1
or
t = true(3,4);
out = tril(t,1) & triu(t);
Related Question