pyqtgraph--用addplot繪制圖像

 

import pyqtgraph as pg
import numpy as np

a = np.random.random(50)
b = np.random.random(10)
c = np.r_[a, b]

app = pg.QtGui.QApplication([])
win = pg.GraphicsWindow(title="繪圖窗口")  #創建繪圖窗口
p1 = win.addPlot(title='a曲線')  #在繪圖窗口win中添加一個坐標
p1.plot(a)  #在坐標p1中繪制a曲線
p2 = win.addPlot(title='b曲線')
p2.plot(b)
p3=win.addPlot(title='z曲線')
p3.plot(c,pen = 'b')
#pen = 'b'   曲線顏色
app.exec_()

以上各圖是水平分布的

 

 

 

import pyqtgraph as pg
import numpy as np

a = np.random.random(50)
b = np.random.random(10)
c = np.r_[a, b]

app = pg.QtGui.QApplication([])
win = pg.GraphicsWindow(title="繪圖窗口")  
p1 = win.addPlot(title='a曲線')  
p1.plot(a)  
win.nextRow()  #在窗口win中指向下一行
p2 = win.addPlot(title='b曲線')
p2.plot(b)
p3=win.addPlot(title='z曲線')
p3.plot(c,pen = 'b')
#pen = 'b'   
app.exec_()

效果圖：

 

 

 

以上各圖的大小是一樣的

 

 

import pyqtgraph as pg
import numpy as np

a = np.random.random(50)
b = np.random.random(10)
c = np.r_[a, b]

app = pg.QtGui.QApplication([])
win = pg.GraphicsWindow(title="繪圖窗口")  
p1 = win.addPlot(colspan=2,title='a曲線')  
#colspan=2    占用兩列
p1.plot(a)  
win.nextRow()  
p2 = win.addPlot(title='b曲線')
p2.plot(b)
p3=win.addPlot(title='z曲線')
p3.plot(c,pen = 'b')
app.exec_()

效果圖：