matplotlib實作資料可變_（有縮進，直接使用）利用matplotlib實作根據實時資料動态更新圖形...

運作DEMO，網上的代碼不能直接運作

上代碼

from time import sleep

from threading import Thread

import numpy as np

import matplotlib.pyplot as plt

from matplotlib.widgets import Button

fig, ax = plt.subplots()

#設定圖形顯示位置

plt.subplots_adjust(bottom=0.2)

#實驗資料

range_start, range_end, range_step =0,1,0.005

t = np.arange(range_start, range_end, range_step)

s = np.sin(4*np.pi*t)

l,= plt.plot(t, s, lw=2)

#自定義類，用來封裝兩個按鈕的單擊事件處理函數

class ButtonHandler:

def __init__(self):

self.flag =True

self.range_s, self.range_e, self.range_step =0,1,0.005

#線程函數，用來更新資料并重新繪制圖形

def threadStart(self):

while self.flag:

sleep(0.02)

self.range_s += self.range_step

self.range_e += self.range_step

t = np.arange(self.range_s, self.range_e, self.range_step)

ydata = np.sin(4*np.pi*t)

#更新資料

l.set_xdata(t-t[0])

l.set_ydata(ydata)

#重新繪制圖形

plt.draw()

def Start(self, event):

self.flag =True

#建立并啟動新線程

t =Thread(target=self.threadStart)

t.start()

def Stop(self, event):

self.flag =False

callback =ButtonHandler()

if __name__ == '__main__':

#建立按鈕并設定單擊事件處理函數

axprev = plt.axes([0.81,0.05,0.1,0.075])

bprev =Button(axprev,'Stop')

bprev.on_clicked(callback.Stop)

axnext = plt.axes([0.7,0.05,0.1,0.075])

bnext =Button(axnext,'Start')

bnext.on_clicked(callback.Start)

plt.show()

點選開始，停止即可。

-------個人随筆，個人記錄，不喜勿噴作者：電信小馬哥https://www.bilibili.com/read/cv6704957出處： bilibili

作者：電信小馬哥

https://www.bilibili.com/read/cv7597786

出處： bilibili