indices of all non zeros rows

13 次查看（过去 30 天）
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?

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

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

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by