Alright so I have counting algorithm but i need it to extract elements from an original source and after extracting them and storing I need matlab to discard them so they dont get count again. How do i do this? My code: if true
DATA = [ 60 0 40 -20 40 -40 50 -30 30 -60 0 -30 40 -30 60]; L = length(DATA); E = [1:L]; N = 1; while N < L N = N + 1; if N < 3 continue end X(N) = [abs(DATA(N)-DATA(N-1))]; Y(N) = [abs(DATA(N-1)-DATA(N-2))]; if X < Y continue else RANGE(N) = Y(N); XMEAN(N) = [.5*(DATA(N-1)+DATA(N-2))] DATA (N -2) =  DATA (N-1) =  N = N - 2 end for I = N:L L = L - 2 E(I) = E(I+1); end end end
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Yes, that will delete elements but you're indexing elements and that will change, not to mention the length of your DATA array keeps getting shorter as you delete elements to eventually as N approaches L you'll get an index out of range error.
What are you really trying to do? Can't you just extract arrays and subtract them, and use diff? Or use hist if you want to count values?
data_n = DATA(3:end) data_nm1 = DATA(2:end-1) data_nm2 = DATA(1:end-2) X = abs(data_n - data_nm1) Y = abs(data_n - data_nm2) RANGE = y xMean = 0.5 * (data_nm1 - data_nm2) % I have no idea what E is supposed to represent.