Creating a matrix containing binary vectors as elements

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Based on the dimension n, i want to create a matrix containing binary vectors:

For example with n=1:

A=[[-1],[0],[1]]'

n=2:

A=[[-1,-1],[-1,0],[-1,1],[0,-1],...,[1,1]]

n=3:

A=[[-1,-1,-1,-1],[-1,-1,-1,0],[-1,-1,-1,1],[-1,-1,0,-1],[-1,-1,0,0],...,[1,1,1,1]]'

Since the dimension is the input variable, I don't know how many while- or for-commands i need in advance.

Any suggestions?

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Star Strider 2012-9-22

编辑：Star Strider 2012-9-22

It's not obvious from your question what you want to do.

How are you creating the elements of your vectors?

Is ‘A’ different for each value of n or are you dynamically creating A?

For a start, I suggest you explore creating ‘A’ as cell or perhaps structure data. They may do what you want.

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Answer 1

Rick Rosson 2012-9-22

编辑：Rick Rosson 2012-9-22

在 MATLAB Online 中打开

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   N = 4;
   A = zeros(3^N,N);
   for k = 1:N
       r = N - k;
       v = [ -1*ones(3^r,1) ; zeros(3^r,1) ; ones(3^r,1) ];
       A(:,k) = repmat(v,3^(k-1),1);
   end

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David 2012-9-23

Thank you Rick.

That's exactly what i was looking for.

David

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