MATLAB: Is there a way to vectorize the definition of this matrix

arraymatrixmatrix arrayvectorization

I am defining the matrix z this way :
z=zeros(n,m);
for i=1:n
    for j=1:m
        z(i,j)= i==y(j);
    end
end
where y is a vector of size m. Is there a better way to write this ? (one line maybe)

Best Answer

Here's one way to do it in one line:
z = y.*ones(n,m)==(1:n).'.*ones(n,m);
I tested with the following inputs:
y=1:10;
n=5; m=length(y);
z = y.*ones(n,m)==(1:n).'.*ones(n,m);
edit: following stephens comment.
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