pyqt5与matplotlib的完美结合实例_Python

pyqt5与matplotlib的完美结合实例

2021-07-17 00:17coding上下求索 Python

今天小编就为大家分享一篇pyqt5与matplotlib的完美结合实例，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧

具体用到了matplotlib.backends.backend_qt5agg.figurecanvasqtagg

直接上代码(这里给出的只是一个简单的框架，告诉你怎么去写)：

				?

									# -*- coding: utf-8 -*-

									'''

									todo:lqd

									'''

									import sys

									import numpy as np

									import matplotlib.pyplot as plt

									from matplotlib.backends.backend_qt5agg import figurecanvasqtagg as fc

									from pyqt5.qtwidgets import qapplication, qpushbutton, qmainwindow, qvboxlayout, qwidget

									class qtdraw(qmainwindow):

									  flag_btn_start = true

									  def __init__(self):

									    super(qtdraw, self).__init__()

									    self.init_ui()

									  def init_ui(self):

									    self.resize(800, 600)

									    self.setwindowtitle('pyqt5 draw')

									    # todo:这里是结合的关键

									    self.fig = plt.figure()

									    self.canvas = fc(self.fig)

									    self.btn_start = qpushbutton(self)

									    self.btn_start.settext('draw')

									    self.btn_start.clicked.connect(self.slot_btn_start)

									    widget = qwidget()

									    layout = qvboxlayout()

									    layout.addwidget(self.canvas)

									    layout.addwidget(self.btn_start)

									    widget.setlayout(layout)

									    self.setcentralwidget(widget)

									  def slot_btn_start(self):

									    try:

									      ax = self.fig.add_subplot(111)

									      x = np.linspace(0, 100, 100)

									      y = np.random.random(100)

									      ax.cla() # todo:删除原图，让画布上只有新的一次的图

									      ax.plot(x, y)

									      self.canvas.draw() # todo:这里开始绘制

									    except exception as e:

									      print(e)

									def ui_main():

									  app = qapplication(sys.argv)

									  w = qtdraw()

									  w.show()

									  sys.exit(app.exec_())

									if __name__ == '__main__':

									  ui_main()