Oh I should of phrased that better.
The one problem i was having was creating a loop to extract the data. My experience writing loops is minimal but i think it would be a for loop.
for i = 1:499
x = data[ , i*(1:100)+ 100]
end
I ran but didnt get the overlap I needed.
Ex: set 1: [ , 1:200] set 2: [ , 100:300] ..... set 499 [ , 48000:50000].
Any suggestions on how to make an index for further analysis