在Matplotlib中,我们可以使用Timer对象来设置一个定时器,定期更新图表。 python from matplotlib.animation import FuncAnimation # 使用FuncAnimation来定期更新图表 ani = FuncAnimation(fig, update, real_time_data, interval=100) # 每隔100毫秒更新一次 在主程序
FuncAnimation是matplotlib的animation模块中的一个重要功能,它可以连续地调用一个函数,用其返回值更新图形。 首先,需要导入必要的库和模块。通常需要导入matplotlib.pyplot用于绘图,matplotlib.animation用于实现动态更新。 import matplotlib.pyplot as plt from matplotlib.animation import FuncAnimation import numpy as np 接...
importnumpyasnpimportmatplotlib.pyplotaspltimporttime# 创建数据源defdata_source():whileTrue:yieldnp.random.randn()time.sleep(1)# 初始化图表plt.ion()# 开启交互模式fig,ax=plt.subplots()x_data,y_data=[],[]line,=ax.plot(x_data,y_data,'r-')ax.set_xlim(0,10)ax.set_ylim(-3,3)plt.x...
importtimeimportrandomimportmatplotlib.pyplotaspltclassSensor:def__init__(self):self.temperature=25.0defget_temperature(self):# 模拟温度采集self.temperature+=random.uniform(-1,1)returnself.temperatureclassDisplay:def__init__(self):self.temperatures=[]defupdate(self,temperature):# 更新显示数据self.temp...
>>> type(ax) <class 'matplotlib.axes._subplots.AxesSubplot'> We can call its instance methods to manipulate the plot similarly to how we call pyplots functions. Let’s illustrate with a stacked area graph of three time series: Python >>> rng = np.arange(50) >>> rnd = np.random...
scales = np.arange(1,40,1) sum_disc = sum+np.real(np.exp(-50*(time-0.4)**2)*np.exp(1j*2*np.pi*400*(time-0.4))) fft = np.fft.fft(sum_disc) fft=fft[0:int(n/2)] coef,freqs = pywt.cwt(sum_disc,scales,'morl') #plot gs = gridspec.GridSpec(2,2) gs.update(left=0,...
andcumulative emotion statistics over time as a static chart. The script uses OpenCV forvideo processing, FER for emotion detection, matplotlib for live chart visualization,and imageio for GIF creation.Key Features:- Real-time emotion detection from webcam feed.- Live update of emotion confidence ...
Real Python has several articles that cover how you can use NumPy to speed up your Python code: Look Ma, No for Loops: Array Programming With NumPy NumPy arange(): How to Use np.arange() Python Histogram Plotting: NumPy, Matplotlib, Pandas & Seaborn Remove ads SciPy (Scientific Python) ...
The Matplotlib Object Hierarchy matplotlib 的一个重要概念是它的对象层次结构。 如果您已经学习过任何介绍性的 matplotlib 教程,那么您可能已经调用过类似plt.plot([1, 2, 3]). 这个单行隐藏了一个事实,即绘图实际上是嵌套 Python 对象的层次结构。这里的“层次结构”意味着每个图下面都有一个 matplotlib 对象的...
Ui_realtimer_plot.py # -*- coding: utf-8 -*- # Added by the Blog author VERtiCaL on 2020/07/12 at SSRF # Created by: PyQt5 UI code generator 5.14.2 # # WARNING! All changes made in this file will be lost! from PyQt5 import QtCore, QtGui, QtWidgets ...