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SLIDEFUN is is an effective utility which applies function to a moving window over a vector and evaluates the function FUN to a moving window of W consecutive elements of the vector V.

Major Features:

1. The function FUN is specified by a function handle or a function name and should return a scalar for a vector input. W specifies the size of the window and should be a positive integer. At the two edges of the vector less than W elements will be used. R will have the same size as V.
   
2. Effectively SLIDEFUN applies the function FUN to a moving window of consecutive elements V(x0:(x0 W)) using FEVAL, and returns the result in R(x).
   
3. The window [x0:(x0 W)] is relative to the current point x in V. R = SLIDEFUN(FUN, W, V, WINDOWMODE) denotes the type of windowing being used: central (default), backward and forward.
4. R = SLIDEFUN(FUN,W,V,WINDOWMODE, P1,P2,...) provides for additional parameters which are passed to the function FUN. Example 1) Sliding max filter - return the maximum of every three consecutive elements:
   • V = [1 2 3 9 4 2 1 1 5 6] ;
   • R = slidefun(@max, 3, V)
   • % -> [2 3 9 9 9 4 2 5 6 6]
   • % So R(i) = max(R(i-1:i 1)) ;
   • % and R(1) = max(V(1:2))

Requirements: MATLAB Release: R13