Getting the position of a value in a vector

Hey Matlab community, I have another one for you all. I have a vector of values BAC_F that corresponds with time, and I want the first position of BAC(BAC_F<.08) , but I can't quite figure it out. Any help and suggestions are appreciated.

Answer 1

[Star Strider]

If you want the index of the first value where BAC < 0.08:

BACx = find(BAC < 0.08, 1, 'first')

[Adam Palmer]

Thats just what I was going for, Thanks again Star Strider!!

[Star Strider]

Again, my pleasure!

Answer 2

[Ben11]

YourVector = BAC(BAC_F<0.8)

Then

FirstValue = YourVector(1)

Is that what you meant?

If not it might simply be

YourVector = BAC_F < 0.8

Do you want to sort the array? Then you can use

sort(YourVector)

and then get the first element.