from PyQt5.Qt import *
import time
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure
from matplotlib.lines import Line2D
import matplotlib
import numpy as np
matplotlib.rcParams['font.sans-serif']=['SimHei']
matplotlib.rcParams['axes.unicode_minus']=False
class Figure_Canvas(FigureCanvas):
def __init__(self,width=3.2,height=2.7):
self.fig=Figure(figsize=(width,height),dpi=70)
super().__init__(self.fig)
self.ax=self.fig.add_subplot(111)
def add_line(self,x_data,y_data,y2_data=None):
self.line=Line2D(x_data,y_data)
self.line.set_ls('--')
self.line.set_marker("*")
self.line.set_color('red')
self.ax.grid(True)
self.ax.set_title('外汇动态曲线')
self.ax.set_xlim(np.min(x_data),np.max(x_data))
self.ax.set_ylim(np.min(y_data),np.max(y_data)+2)
self.ax.set_xlabel('X坐标')
self.ax.set_ylabel('Y坐标')
self.ax.fill_between(x_data,y_data,color='g',alpha=0.1)
self.ax.add_line(self.line)
#绘制第二条曲线
self.line2=Line2D(x_data,y2_data)
self.ax.add_line(self.line2)
self.line2.set_color('blue')
self.ax.legend([self.line,self.line2],['sinx','cosx'])
self.ax2=self.ax.twinx()
self.ax2.set_ylabel("y2坐标")
class LineWidget(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle('动态曲线')
self.resize(1000,800)
self.groupBox=QGroupBox(self)
self.groupBox.setGeometry(QRect(100,200,800,300))
self.load_line()
self.timer=QTimer()
self.timer.start(10)
self.ts=time.time()
self.timer.timeout.connect(self.UpdateData)
def load_line(self):
self.LineFigure=Figure_Canvas()
self.LineFigureLayout=QGridLayout(self.groupBox)
self.LineFigureLayout.addWidget(self.LineFigure)
x_data=np.arange(-4,4,0.02)
y_data=np.sin(x_data)
y2_data=np.cos(x_data)
self.LineFigure.add_line(x_data,y_data,y2_data)
def UpdateData(self):
dt=time.time()-self.ts
x_data=np.arange(-4,4,0.02)
z_data=np.sin(x_data+dt)
h_data=np.cos(x_data+dt)
self.LineFigure.line2.set_ydata(h_data)
self.LineFigure.draw()
if __name__ == '__main__':
import sys
app=QApplication(sys.argv)
win=LineWidget()
win.show()
sys.exit(app.exec_())
