Hi, 
How quickly computethe density of the vector in the selected range?
I have vec=[0 0 0 1 0 1 0 1 1 0]
I am lookking for function computing "density" of this vector on selelcted 
range i.e. 5 elements :

foo(vec,5) 
result:
[0.2 0.2 0.2 0.2 0.2 0.6 0.6 0.6 0.6 0.6]

mean first 5 elements is 0.2

mean second  5 elements is 0.6

etc...
I need somthing fast to veeeery long vectors
Paul

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