select some component of vector

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zina ben 2012-6-27

评论： Juan Andrés Meza Silva 2021-5-20

Hello!

i think i chose the wrong example last time

I have this vector:

V = [12 45 30 4 56 79 8 94 55]';

i need just to used

V1 = [79 8 94 ]

the component numb 6 , 7 and 8

what can i do

please help me. Thanks in advance

Walter Roberson 2012-6-27

编辑：Walter Roberson 2012-6-28

the cyclist 2012-6-27

If you have inputs V and V1, and you are looking for the output to be [6 7 8], then you want

out = find(ismember(V,V1));

If you have inputs V and [6 7 8], and you are looking for the output to be V1, then you want

out = V([6 7 8])

out = V(6:8)

Walter Roberson 2012-6-27

An approach without using find() is

[tf, out] = ismember(V, V1);

THANK U IN CAPS.

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