Create design matrix for ANOVA

2017 4 22
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更新时间：2017 4 27
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How can I create a design matrix for ANOVA test manually without writing 0's and 1's (too tedious!!) ? Such as [1 1 0 0; 1 1 0 0; 1 0 1 0; 1 0 1 0; 1 0 0 1; 1 0 0 1]
Thanks in advance!

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回答（1 个）

Prashant Arora
Prashant Arora 2017-4-27

0 个投票

You can start with zeros and use matrix indexing to create ones.
A = zeros(10);
rowInd = [1 2 3 4];
colInd = [5 7 8 9];
Ind = sub2ind(size(A),rowInd,colInd);
A(Ind) = 1;
If there's some pattern involved, you can probably do this more efficiently.

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