simple question of creating a time vector

hello everyone,

i have a data set of 15345 samples, duration of 60 seconds, and sample frequency of 256 hz , how do i create the right time vector ?

i have tried to use : t=0:1/fs:1 and it wasnt correct, (fs being 256)

any suggetion would be helpful. thanks in advance:)

Answer 1

[Star Strider]

Without the exact details of your file (that I suspect is not exactly 60 seconds long), something like this will work:

t = linspace(0, 60, 15345);

Note that this provides a sampling frequency of 255.73 Hz, so it may need to be tweaked a bit to get exactly the 256 Hz sampling frequency.

Calculating:

seconds = 15345/256

produces:

seconds =
    59.9414

so you may want to check the actual duration.

.