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help for matrix manipulation with loop

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sermet
sermet 2015-6-4
评论： Stephen23 2015-6-4
%for n=i (i is variable, taken 6 this example), I need to create the below matrix % i numbers rows and (i-3) numbers columns need to be created as follow;
j=[0;0;0;1;0;0]
m=[0;0;0;0;1;0]
k=[0;0;0;0;0;1]
created_matrix=[j,m,k]
%I need to write a loop w.r.t. the i variable for creating this matrix.
  1 个评论
Stephen23
Stephen23 2015-6-4
Using vectorized code is much neater, faster and more robust than using loops. Learn to write vectorized code and suddenly MATLAB becomes a powerful tool for you to use...

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2015-6-4
[zeros(3);eye(3)]

更多回答（1 个）

Andrei Bobrov
Andrei Bobrov 2015-6-4
编辑：Andrei Bobrov 2015-6-4
n= 3;
out = [zeros(n);eye(n)];
with loop
out = zeros(2*n,n);
for jj = 1:n
out(jj+3,jj) = 1;
end

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