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我有一個關於pyqtgraph實時繪圖的問題。我想讓繪圖從連續輸入中收集的每100個項目更新一次,但曲線只顯示一次,收集數據完成後。調試打印「boo」每100個項目後打印到控制檯,但updatePlot()
似乎只在結束循環時調用。這是我的代碼:pyqtgraph實時繪圖
class EKG(QtGui.QMainWindow, out.Ui_MainWindow):
def __init__(self):
super(self.__class__, self).__init__()
self.setupUi(self)
self.collectedData = []
self.dataPlot.showGrid(x=True, y=True, alpha=0.6)
self.plt = self.dataPlot.plot(pen='m', antialias=True)
self.port = "COM9"
self.actionZako_cz.triggered.connect(self.close_window)
self.startBtn.clicked.connect(self.collectData)
def getTime(self):
return int(self.timeBox.toPlainText())
def updatePlot(self):
self.plt.setData(self.collectedData)
def collectData(self, howLong):
howLong = self.getTime()
self.collectedData = []
serialData = serial.Serial(self.port, 57600)
t_end = time.time() + howLong
while time.time() < t_end:
try:
self.collectedData.append(int(serialData.readline().strip()))
except ValueError:
pass
if len(self.collectedData) % 100 == 0:
print "boo"
self.updatePlot()
serialData.close()
我將不勝感激任何意見;這是第一次,我用pyqtgraph,我還沒有得到它的竅門尚未...