select some component of vector

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]

Duplicate is at http://www.mathworks.com/matlabcentral/answers/42209-select-some-compenent-of-vector

Answer 1

[the cyclist]

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])

or

out = V(6:8)

[Walter Roberson]

An approach without using find() is

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

[Juan Andrés Meza Silva]

THANK U IN CAPS.