Sha256: 8a57989748ff9d09a9c9e4bf3a1d15e20df55054d2b6f5a91a98d9a8735f6058
Contents?: true
Size: 978 Bytes
Versions: 7
Compression:
Stored size: 978 Bytes
Contents
module SnowmanIO
module Utils
def self.floor_5sec(time)
Time.new(time.year, time.month, time.day, time.hour, time.min, (time.sec/5)*5)
end
def self.floor_5min(time)
Time.new(time.year, time.month, time.day, time.hour, (time.min/5)*5)
end
def self.avg(arr)
if arr.empty?
0.0
else
arr.inject(:+).to_f/arr.length
end
end
# `up` value is close to 90 percentile by meaning, but it slightly
# depends of every element (weighted avarage). This metric is especially usefull for small arrays.
def self.up(arr)
sorted = arr.sort
if sorted.length <= 1
sorted[0]
else
sum = 0
amount = 0
sorted.each_with_index { |e, i|
w = i.to_f/sorted.length
if w <= 0.9
a = w + 0.1
else
a = 1.9 - w
end
sum += e*a
amount += a
}
sum/amount
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems