Finding the location of particular value

Hello 

I have a matlab data file which has 4 variables like time,velocity ,acceleration . Each variable has 2000values . I need maximum acceleration,so I used max(acceleration).Now I need to know the velocity at maximum acceleration from the data. How to get that value .

Answer 1

[Walter Roberson]

  [maxacc, maxaccidx] = max(acceleration);
  maxaccvel = velocity(maxaccidx);

[Vinay Srinivasan]

Thank you so much ,it worked

[Vinay Srinivasan]

Can you please explain the first line of your answer

[Walter Roberson]

The second output of max is the index where the data was located.

[Vinay Srinivasan]

ok thank you