animation模块的使用

1.动画的实现—初探

import numpy as np

import matplotlib.pyplot as plt

from matplotlib.animation import FuncAnimation

fig, ax = plt.subplots()

xdata, ydata = [], []

ln, = ax.plot([], [], 'r-', animated=False)

def init():

    ax.set_xlim(0, 2*np.pi)

    ax.set_ylim(-1, 1)

    return ln,

def update(frame):

    xdata.append(frame)

    ydata.append(np.sin(frame))

    ln.set_data(xdata, ydata)

    return ln,

ani = FuncAnimation(fig, update, frames=np.linspace(0, 2*np.pi, 128),

                    init_func=init, blit=True)

plt.show()

2.结合pyqt

from PyQt5.QtWidgets import QPushButton,QWidget,QApplication,QGridLayout,QListWidget,QLineEdit

import pyqtgraph as pg

# pyqtgraph使用matplotlib

import pyqtgraph.widgets.MatplotlibWidget as mw

import sys

import numpy as np

# 用于中文乱码

import matplotlib

""" 绘图防止乱码 """

# 指定默认字体 下面三条代码用来解决绘图中出现的乱码

matplotlib.rcParams['font.sans-serif'] = ['SimHei']

matplotlib.rcParams['font.family'] = 'sans-serif'

# 解决负号'-'显示为方块的问题

matplotlib.rcParams['axes.unicode_minus'] = False

from matplotlib.animation import FuncAnimation

class Example(QWidget):

    def __init__(self):

        super(Example, self).__init__()

        self.initUI()

    def initUI(self):

        self.setGeometry(50,50,800,620)

        self.setWindowTitle("animation动画—结合pyqt")

        model_plt = mw.MatplotlibWidget()

        # 隐藏matplotlib中的工具栏

        model_plt.toolbar.setVisible(False)

        self.fig = model_plt.getFigure()

        # 设置一个1*1面板

        self.ax = self.fig.add_subplot(111)

        self.xdata, self.ydata = [], []

        self.ln, = self.ax.plot([], [], 'r-', animated=False)

        ani = FuncAnimation(self.fig, self.update, frames=np.linspace(0, 2 * np.pi, 128),

                            init_func=self.init, blit=True)

        self.gridLayout = QGridLayout(self)

        ## 将部件添加到布局中的适当位置

        self.gridLayout.addWidget(model_plt, 0, 0)

    def init(self):

        self.ax.set_xlim(0, 2 * np.pi)

        self.ax.set_ylim(-1, 1)

        return self.ln,

    def update(self, frame):

        self.xdata.append(frame)

        self.ydata.append(np.sin(frame))

        self.ln.set_data(self.xdata, self.ydata)

        return self.ln,

if __name__ == '__main__':

    app = QApplication(sys.argv)

    ex = Example()

    ex.show()

    sys.exit(app.exec_())