How can I extract data and match it from two different data??

Hello.

for example, I have two data.

1 is [ 0 0 0 0 1 1 1 0 0 0 ] and

2 is [ 5 5 5 5 10 10 10 6 6 6 ]

What I want to do is that first find a value '1' position in data 1* 5th,6th,7th) and extract a data from same position in data 2.(10 10 10 )

in original dat there are more then 5000 sequence... :(

Is there any way to do this?

Answer 1

[the cyclist]

If your first vector is only ones and zeros, then it is as simple as

idx = [ 0 0 0 0 1 1 1 0 0 0 ];
b = [ 5 5 5 5 10 10 10 6 6 6];

b(idx)

If the first vector has more general values, and you want the values of the second vector where the non-zeros are then

a = [ 0 0 0 0 2 1 6 0 0 0 ];
b = [ 5 5 5 5 10 10 10 6 6 6];

b(a~=0)

If you actually need the positions of the non-zero elements, then

pos = find(a);

[kyoungin kang]

Thank you ! ♥