Finding indices when vectors is used

2012 2 20
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更新时间：2013 10 17
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Assume we have x = [1,2,3,1]; If I execute idx = find(x == 1) then idx == [1,4]. Is there similar command for extracting more indices I am interested in, something like find(x == [1,3]) == [1,3,4].
Of course I would like to avoid loops.
-- Ok, but what if we allow repetitions? For instance: find(x == [1,3,1]) == [1,1,3,4,4] Can we do this without using loops?

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the cyclist
the cyclist 2012-2-20

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I think you want the ismember() command.

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Mateusz
Mateusz 2012-2-20
Looks exactly what I am looking for, thanks :)
Mateusz
Mateusz 2012-2-20
Ok, but what if we allow repetitions? For instance: find(x == [1,3,1]) == [1,1,3,4,4] Can we do this without using loops?

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