Create an array that has ones

2016 7 14
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更新时间：2016 7 14
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Hello,
I am trying to create a 1x256 cell array where each matrix inside is 256x41. I want each matrix to have a row of ones and the rest zeroes. For example, the first matrix will have the first row be ones and the rest zeroes. The second matrix will have the second row be all ones with the first row and all the rows after the second row be zeroes. Help? I'd like to loop this.
Thanks

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Azzi Abdelmalek
Azzi Abdelmalek 2016-7-14

0 个投票

A=arrayfun(@(x) circshift([zeros(1,41);ones(255,41)],[x 1]),1:255,'un',0)

更多回答（1 个）

Andrei Bobrov
Andrei Bobrov 2016-7-14
编辑：Andrei Bobrov 2016-7-14

2 个投票

num2cell(permute(repmat(eye(256),1,1,41),[1,3,2]),[1,2])
or
num2cell(bsxfun(@eq,(1:256)'*ones(1,41),reshape(1:256,1,1,[])),[1,2])
or
m = 256;
n = 41;
a = [ones(1,n);zeros(m,n)];
C = cell(m,1);
for jj = 1:m
ii = jj + 1;
a([jj,ii]) = a([ii,jj]);
C{jj} = a(2:end,:);
end

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