How do I get the index of the element that's the start of an embedded vector within a longer vector? Order mainintained.

For example, in the containing vector (1 2 4 7 6 9 5 3 4 6 7 12 10) I would like to get the index of the first occurrence of the target (4 6 7) which is 9 not 3. I think ismember would give me 5.

[Arthur Shapiro]

There's a typo. I think ismember would give 3. 5 is a typo.

Answer 1

[Star Strider]

The strfind function will give you 9:

v = [1 2 4 7 6 9 5 3 4 6 7 12 10];
t = [4 6 7];

idx = strfind(v, t)

idx =
     9

[Arthur Shapiro]

Thank you. So simple.

Answer 2

[Andrei Bobrov]

v = [1 2 4 7 6 9 5 3 4 6 7 12 10];

[~,ii] = ismember([4,6,7],hankel(v(1:end-2),v(end-2:end)),'rows');

[Arthur Shapiro]

Thank you so much.

Answer 3

[Arthur Shapiro]

Thanks to both Star Strider and Andrei Bobrov for their answers

[Star Strider]

Our pleasure!