<p>下面是一个基本示例,它将使用<code>QThread</code>绘制三个不同的示例:</p>
<pre><code>#!/usr/bin/env python
#-*- coding:utf-8 -*-
import random
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg
from matplotlib.figure import Figure
from PyQt4 import QtGui, QtCore
class MatplotlibWidget(QtGui.QWidget):
def __init__(self, parent=None):
super(MatplotlibWidget, self).__init__(parent)
self.figure = Figure()
self.canvas = FigureCanvasQTAgg(self.figure)
self.axis = self.figure.add_subplot(111)
self.layoutVertical = QtGui.QVBoxLayout(self)
self.layoutVertical.addWidget(self.canvas)
class ThreadSample(QtCore.QThread):
newSample = QtCore.pyqtSignal(list)
def __init__(self, parent=None):
super(ThreadSample, self).__init__(parent)
def run(self):
randomSample = random.sample(range(0, 10), 10)
self.newSample.emit(randomSample)
class MyWindow(QtGui.QWidget):
def __init__(self, parent=None):
super(MyWindow, self).__init__(parent)
self.pushButtonPlot = QtGui.QPushButton(self)
self.pushButtonPlot.setText("Plot")
self.pushButtonPlot.clicked.connect(self.on_pushButtonPlot_clicked)
self.matplotlibWidget = MatplotlibWidget(self)
self.layoutVertical = QtGui.QVBoxLayout(self)
self.layoutVertical.addWidget(self.pushButtonPlot)
self.layoutVertical.addWidget(self.matplotlibWidget)
self.threadSample = ThreadSample(self)
self.threadSample.newSample.connect(self.on_threadSample_newSample)
self.threadSample.finished.connect(self.on_threadSample_finished)
@QtCore.pyqtSlot()
def on_pushButtonPlot_clicked(self):
self.samples = 0
self.matplotlibWidget.axis.clear()
self.threadSample.start()
@QtCore.pyqtSlot(list)
def on_threadSample_newSample(self, sample):
self.matplotlibWidget.axis.plot(sample)
self.matplotlibWidget.canvas.draw()
@QtCore.pyqtSlot()
def on_threadSample_finished(self):
self.samples += 1
if self.samples <= 2:
self.threadSample.start()
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow()
main.resize(666, 333)
main.show()
sys.exit(app.exec_())
</code></pre>
<p><img src="https://i.imgur.com/ZrnZUOq.png" alt="image"/></p>