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Quick Question! Get the Index

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Xiao Tang
Xiao Tang 2012-8-11
Hi guys, I have a matrix A,
A = [1;1;0;1;1;1;0]
As you can see, A(3) =0;A(7) = 0;
Is there any function or logical index I can use to get[3;7]?
Thanks!

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Matt Fig
Matt Fig 2012-8-11
编辑：Matt Fig 2012-8-11
idx = find(~A)
or
idx = find(A~=0)
or
idx = find(A==0)
or (this might be much faster if you are doing this in a FOR loop)
I = 1:length(A); % Define outside loop
idx = I(A==0) % If A is changing every iteration, but not numel.
% or I(~A), etc.

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