indices of all non zeros rows

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Azza Ahmed
Azza Ahmed 2012-5-31
Hi,
I have a large text file and I am trying to find the indices of the rows that do not have all zeros. For example is I have this matrix:
A= 5 3 1
0 0 0
5 7 9
0 0 0
4 0 0
0 0 0
2 0 0
1 0 1
1 0 0
To find the indices of rows with all zeros is by: find(all(A==0,2)) Which gives me this answer:2,4,6 Now, if someone can tell me how can I find the indices of the other rows which have values? e.g. for rows 1,3,5,7,8 and 9? Can someone please help me with a small code?
Best wishes
AA
[Edited to format array. -- the cyclist]
  1 个评论
Honglei Chen
Honglei Chen 2012-5-31
Your example shows a single vector, not a matrix. Could you format it correctly?

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the cyclist
the cyclist 2012-5-31
find(~all(A==0,2))
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Azza Ahmed
Azza Ahmed 2012-6-4
That's exactly what I am looking for. Many thanks Oleg!
AA

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