i want to read only non zero numerical from the matrix

3 次查看（过去 30 天）
suresh
suresh 2012-1-19
a=[0 0 0 0 0 0 0 0 0 0 1 2 3 4 5 6 7 0 0 0]
a(1,11:17)
then it will display
1 2 3 4 5 6 7
is there any code to read non zero numerical automatically

请先登录，再回答此问题。

采纳的回答

David
David 2012-1-19
To get the non-zero elements
a(a~=0)
Be careful with the comparison of floats/doubles (some zeros may just be very very small (if there are the result of a calculation) so it may be best to have a compare function:
tol = 1000*sqrt(eps);
cmpTol = @(x) abs(x)<tol;
and do something like
a(~cmpTol(a))

更多回答（1 个）

Walter Roberson
Walter Roberson 2012-1-19

类别

在 Help Center 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 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