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Contents
module MoreMath
class Sequence
module MovingAverage
def simple_moving_average(n)
n < 1 and raise ArgumentError, 'n < 1, has to be >= 1'
n <= @elements.size or raise ArgumentError,
'n > #elements, has to be <= #elements'
avg = []
0.upto(@elements.size - n) do |i|
sum = 0.0
i.upto(i + n - 1) do |j|
sum += @elements[j].to_f
end
avg << sum / n
end
avg
end
alias moving_average simple_moving_average
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems