How to skip over zero values in an array?

11 次查看（过去 30 天）
Peter Kapteyn
Peter Kapteyn 2017-11-15
评论： Akira Agata 2017-11-16
In an array of audio samples, I would like to copy non-zero samples to a different array, and skip over any zero samples. I have tried using a loop to traverse the array, but I am having issues with bounds.
arrayout = [];
% arraycount = 1;
dim = size(dialsound); % number of samples in audio sample I am using
c = 1;
while (c < dim(1,2))
while(dialsound(1,c) == 0)
c = c + 1;
end
arrayout(1,c) = dialsound(1,c);
c = c + 1;
end

请先登录，再回答此问题。

采纳的回答

Akira Agata
Akira Agata 2017-11-15
You can also do that by another way, like:
idx = abs(dialsound) < eps;
arrayout = dialsound(~idx);
  2 个评论
Peter Kapteyn
Peter Kapteyn 2017-11-16
Any chance you could explain how this code works? Thanks.
Akira Agata
Akira Agata 2017-11-16
Thank you for your reply. To understand how this code works, I would recommend trying very simple example, like:
>> x = [1 2 0 2 1e-20]
x =
1.0000 2.0000 0 2.0000 0.0000
>> idx = x < eps
idx =
0 0 1 0 1
>> y = x(~idx)
y =
1 2 2
I hope it will be some help for your better understanding !

请先登录，再进行评论。

更多回答（1 个）

Matt J
Matt J 2017-11-15
Is this what you want
arrayout=nonzeros(dialsound)

类别

在 Help Center 和 File Exchange 中查找有关 Audio I/O and Waveform Generation 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