Divide group into subgroups
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I have a matrix 5x5 and i managed from this matrix to create a matrix 5x10 by creating a subgroup of 2 in each column.
So Matrix =
0 0 0 1 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 0 0 0 1
I want to tell that row 1 belongs to group 2, row 2 belongs to group 1, row 3 belongs to group 2, row 4 belongs to group 3 and row 5 belongs to group 5!
Thank you so much
采纳的回答
Azzi Abdelmalek
2016-4-7
编辑：Azzi Abdelmalek
2016-4-7
group=[2 1 2 3 5]
the variable group indicate what you want
5 个评论
N.
2016-4-7
Walter Roberson
2016-4-7
group=[2 1 2 3 5] is an assignment statement, in which you define that the first entry is group 2, the second is group 1, and so on. You would create that variable using whatever information allowed you to tell us that those were the group numbers when you described the problem.
Azzi Abdelmalek
2016-4-7
Ok, then based on what you can tell one row or another belong to any group?
Azzi Abdelmalek
2016-4-7
Maybe this is what you want
A=[0 0 0 1 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 0 0 0 1]
n=size(A,1);
a=any(reshape(A,n,2,[]),2)
b=a(:,:);
for k=1:n
group(k)=find(b(k,:),1)
end
更多回答（1 个）
Walter Roberson
2016-4-7
group = sum( Matrix(1:2:end) | Matrix(2:2:end) .* repmat( 1:size(Matrix,2)/2, size(Matrix,1), 1), 2);
Note: this may give unexpected answers if you have multiple 1's in the same row.
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