57 lines
1.4 KiB
Python
57 lines
1.4 KiB
Python
"""
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Moving Average
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returns a float so no integer rounding applied
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"""
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class mAvg():
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def __init__(self, size):
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self.size = size
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self.data = [0] * size
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self.nval = 0
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self.sum = 0
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self.next = 0
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def addVal(self, value):
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# add a new value und return new current avg
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if self.nval < self.size:
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# list is not filled
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self.nval += 1
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self.sum += value
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else:
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# list is filled
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self.sum = self.sum - self.data[self.next] - value
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self.data.[self.next] = value
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self.next += 1
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# if end of list reached, start over from beginning
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if self.next = self.size:
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self.next = 0
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return self.sum / self.nval
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def getAvg(self, points=None):
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if self.nval == 0:
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return None
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# get avg of all collected data
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if not points:
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return self.sum / self.nval
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# get avg of subset
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if points > self.nval:
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return None
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sum = 0
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i = self.next
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p = points
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while p > 0:
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p -= 1
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if i == 0:
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i = self.size - 1
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else:
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i -= 1
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sum += self.data[i]
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return sum / points
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def reset(self):
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self.nval = 0
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self.next = 0
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self.sum = 0
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