repeat elements in matrix
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how can i generate a matrix as shown [1 1 1 1 1 1 1 1; 1 1 1 1 2 2 2 2; 1 1 2 2 3 3 4 4; 1 2 3 4 5 6 7 8]
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Azzi Abdelmalek
2015-7-13
编辑：Azzi Abdelmalek
2015-7-13
m=4;
n=2^(m-1);
b=zeros(m,n);
for k=0:m-1
a=1:2^k;
b(k+1,:)=reshape(repmat(a,n/numel(a),1),1,[]);
end
b
Or
m=4
n=2^(m-1)
b=cell2mat(arrayfun(@(x) reshape(repmat(1:2^x,n/numel(1:2^x),1),1,[]),(0:m-1)','un',0))
2 个评论
ali sedeek
2015-7-13
Image Analyst
2015-7-13
What was wrong with
m = [1 1 1 1 1 1 1 1; 1 1 1 1 2 2 2 2; 1 1 2 2 3 3 4 4; 1 2 3 4 5 6 7 8];
It generates exactly what you asked for without assuming anything that you did not state. If you have some pattern, or generality in terms of size of dimensions, then you should have stated what it is.
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