Extract data from array at set intervals to new array

I'm extracting some intensity data from video frames and storing it in an array. Frame number along x and amplitude on y, usual stuff.

How would I create a new array which stores the y(row) value every 24 frames?

Thanks

Answer 1

[Kevin Phung]

you can use indexing.

y(1:23:end)

[magvlc]

Thanks, I was getting the syntax wrong.