Question

我试图弄清楚如何在PyQT GUI中嵌入Matplotlib动画（使用funcAnimation）。令人惊讶的是，我无法在网上找到......这个链接基本上就是它，而且很难遵循：

Can I use Animation with Matplotlib widget for pyqt4?

以下代码是使用Matplotlib的非常简单的动画。它只是一个在屏幕上移动的圆圈，它工作正常：

import matplotlib.pyplot as plt
from matplotlib.patches import Circle
from matplotlib import animation

fig,ax = plt.subplots()
ax.set_aspect('equal','box')
circle = Circle((0,0), 1.0)
ax.add_artist(circle)
ax.set_xlim([0,10])
ax.set_ylim([-2,2])

def animate(i):
    circle.center=(i,0)
    return circle, 

anim = animation.FuncAnimation(fig,animate,frames=10,interval=100,repeat=False,blit=True)

plt.show()

以下是我在PyQT GUI中嵌入此动画的尝试。（我相信我有prevented the reference to the animation object from being garbage collected来称呼self.anim）：

import sys
from PyQt4 import QtGui, QtCore
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
import matplotlib.pyplot as plt
from matplotlib.patches import Circle
from matplotlib import animation

class Window(QtGui.QDialog): #or QtGui.QWidget ???

    def __init__(self):
        super(Window, self).__init__()
        self.fig = plt.figure()
        self.canvas = FigureCanvas(self.fig)
        self.button = QtGui.QPushButton('Animate')
        self.button.clicked.connect(self.animate)

        # set the layout
        layout = QtGui.QVBoxLayout()
        layout.addWidget(self.canvas)
        layout.addWidget(self.button)
        self.setLayout(layout)

    def animate(self):
        self.ax = self.fig.add_subplot(111)  # create an axis
        self.ax.hold(False)  # discards the old graph
        self.circle = Circle((0,0), 1.0)
        self.ax.add_artist(self.circle)
        self.ax.set_xlim([0,10])
        self.ax.set_ylim([-2,2])

        self.anim = animation.FuncAnimation(self.fig,self.animate_loop,frames=10,interval=100,repeat=False,blit=False)
        plt.show()

    def animate_loop(self,i):
        self.circle.center=(i,0)
        return self.circle, 

w = Window()
w.show()

运行此代码会显示GUI，但是当我点击＆＃34; Animate＆＃34;按钮，什么都没发生。控制台中甚至没有给出错误消息。任何见解都会非常感激！

如何在PyQT GUI中嵌入matplotlib funcAnimation对象

0 个答案: