pyqt5与matplotlib的完美结合实例

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()

以上这篇pyqt5与matplotlib的完美结合实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持服务器之家。

原文链接：https://blog.csdn.net/shangxiaqiusuo1/article/details/90044849