import csv

import matplotlib.pyplot as plt

import numpy as np

class Queue(object):

"""队列"""

def __init__(self):

self.items = []

def is_empty(self):

return self.items == []

def enqueue(self, item):

"""进队列"""

self.items.insert(0,item)

def dequeue(self):

"""出队列"""

return self.items.pop()

def size(self):

"""返回大小"""

return len(self.items)

def SlideAvgfliter(velocity_0,length):

i = 0

velocity = []

cup = Queue()

try:

while True:

if(cup.size() == length): #滑动滤波，length个为1队列

cup.dequeue() #弹出最早的

cup.enqueue(velocity_0[i]) #加入最新的

velocity.append(sum(cup.items)/cup.size()) #放入数组

i += 1

continue

else: #不满足

cup.enqueue(velocity_0[i])

i +=1

velocity.append(sum(cup.items)/cup.size())

except IndexError:

pass

return velocity

def MiddleFiliter(velocity_0,length):

if(length%2 != 1) : return velocity_0 #确保length为奇数

i = 0

velocity = []

wing = length // 2

for j in range(length):

velocity.append(velocity_0[j])

i += 1

pass