How to find all zero values in a matrix?

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Hello,
I am wondering first how can I do to detect the number of zero values and their position in a large matrix.Secondly, how can i delete it.
Exemple:
A=
1 0,1 1
2 0.7 0
3 0.9 2
4 1.7 0
Number of zero values:2
position: A(2,3);A(4,3)
Thanks in advance

Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 12 Dec 2013
Edited: Azzi Abdelmalek on 12 Dec 2013
A=[1 0.1 1;2 0.7 0;3 0.9 2;4 1.7 0]
[ii,jj]=find(~A)
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