MATLAB: How to fill matrix without using for loop

without using for loop

a=zeros(24,4); b=ones(24,1);

Why does not this work?

a(:,1:end)=b(:)

Subscripted assignment dimension mismatch.

Does anyone know where I am going wrong? bold

Are you trying to replicate b through A? In which case use the repmat function:

A = repmat(b,24,1)

Edit: Just realised that b is a column, so it should be A = repmat(b,1,4)

Instead of cat, use repmat for your case, as you're repeatedly stacking a matrix in a dimension.

B = rand(2, 5)
C = repmat(B, 1, 1, 5) %stacks B in the 3rd dimension 5 times

A=1:24;
B=A*10;
C=zeros(24,144);
p=0;
for k=1:6:144
  p=p+1;
  C(p:end,k)=A(p);
  C(p:end,k+1)=B(p);
end
C