怎么在pyqt5 上刷新 折线图

城中城

如题  有新的数据进来
然后 刷新图形

1. from PyQt5.QtWidgets import *
   
2. from test import Ui_UiView
   
3. import matplotlib
   
4. matplotlib.use("Qt5Agg")  # 声明使用QT5
   
5. from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
   
6. from matplotlib.figure import Figure
   
7. from realTimeStockPicMoni import *
   
8. 
   
9. 
   
10. 
    
11. from threading import Thread
    
12. import time
    
13. from PyQt5 import sip
    
14. from threading import Timer
    
15. 
    
16. class MyFigure(FigureCanvas):
    
17.     def __init__(self, width=5, height=4, dpi=100):
    
18.         # 创建一个Figure
    
19.         self.fig = Figure(figsize=(width, height), dpi=dpi)
    
20.         # 在父类中激活Figure窗口
    
21.         super(MyFigure, self).__init__(self.fig)
    
22.         # 创建一个子图， 用于绘制图形用，111表示子图编号，如matlab的subplot(1,1,1)
    
23.         self.axes = self.fig.add_subplot(111)
    
24. 
    
25. class OpenView(QMainWindow, Ui_UiView):
    
26.     def __init__(self, time_code):
    
27.         self.time_code = time_code
    
28.         super(OpenView, self).__init__()
    
29.         self.setupUi(self)
    
30.         self.setWindowTitle('分时图数据')
    
31.         self.setMinimumSize(0, 0)
    
32.         self.gridlayout = QGridLayout(self.groupBox)  # 继承容器groupBox
    
33. 
    
34.         self.show_df()
    
35. 
    
36.     def show_df(self):
    
37.         self.time_code = str(self.time_code) + '.csv'      # 获取文件名
    
38.         time_path = self.time_code.split('_')[0]
    
39.         self.path = f'..\\data\\tick\\{time_path}\\{self.time_code}'
    
40.         print(self.path)
    
41. 
    
42.         self.all_tick = pd.read_csv(self.path)
    
43.         self.x = np.arange(0, self.all_tick.index[-1]+1)
    
44. 
    
45.         self.F = MyFigure(width=5, height=4, dpi=100)
    
46.         self.F.axes.plot(self.x, self.all_tick.close[self.x], self.x, self.all_tick.minu[self.x])
    
47.         self.F.axes.set_title("sincos")
    
48.         self.gridlayout.addWidget(self.F, 0, 1)
    
49. 
    
50. 
    
51. 
    
52.     def foo(self):
    
53.         time.sleep(2)
    
54.         if self.gridlayout.count() > 0:
    
55.             self.gridlayout.removeWidget(self.F)
    
56.             self.F.deleteLater()
    
57. 
    
58. 
    
59. 
    
60.     #
    
61.     #     time.sleep(2)
    
62.     #     self.F.axes.plot(self.x, self.all_tick.close[self.x], self.x, self.all_tick.minu[self.x])
    
63.     #     # self.gridlayout.addWidget(self.F, 0, 1)
    
64.     #     self.show()  # 显示图片
    
65. 
    
66. 
    
67.         # time.sleep(0.5)
    
68. 
    
69. 
    
70. 
    
71. 
    
72. 
    
73. if __name__ == '__main__':
    
74.     app = QApplication(sys.argv)
    
75.     time_code = '20210111_000661'
    
76.     start = OpenView(time_code)
    
77.     start.show()
    
78. 
    
79.     t = Timer(5, start.foo)
    
80.     t.start()
    
81.     sys.exit(app.exec_())

复制代码

有大佬能改吗   万分感谢

均昊山

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