[Python]请问如何解决pyqt显示多个绘图组件后的自我崩溃问题？
本帖最后由 allrobot 于 2022-3-31 15:51 编辑我尝试添加多线程运行各自的绘图组件，结果无法显示绘图组件
(Show_EMG.py):
import ble
from pyqtgraph import PlotWidget
import pyqtgraph as pg
import numpy as np
from PyQt5 import QtCore
class Plot_Show(object):
'''
Form,y,x,data,length = 1800, width = 250, high = 120, text = "sEMG Voltage"
'''
def __init__(self,Form,y,x,data,text=""):
# length = 1800, width = 250, high = 120, text = "sEMG Voltage"
self.Form=Form
self.y=y
self.x=x
self.data=ble.EMG
self.length=1800
if(text==""):
self.test="sEMG Voltage"
else:
self.text = text
self.graphicsView = PlotWidget(self.Form)
self.initUI()
def initUI(self):
self.graphicsView.setGeometry(QtCore.QRect(self.y, self.x, 250, 120))
self.graphicsView.hideButtons()
self.graphicsView.setObjectName(self.text)
self.graphicsView.setLabel(axis="left",text=self.text)
self.graphicsView.setLabel(axis='bottom',text='Time')
self.graphicsView.setMouseEnabled(x=False,y=False)
self.graphicsView.setAntialiasing(True)
self.graphicsView.setMenuEnabled(False)
self.graphicsView.hideButtons()
self.data1 = np.zeros(self.length)
self.curve1 = self.graphicsView.plot(self.data1)
self.ptr1 = 0
def update1():
global data1, ptr1
self.graphicsView.setRange(xRange=,yRange=,padding=0)
self.data1[:-1] = self.data1# shift data in the array one sample left
self.data1[-1] = self.data
self.ptr1 += 1
self.curve1.setData(self.data1)
self.curve1.setPos(self.ptr1, 0)
self.timer = pg.QtCore.QTimer()
self.timer.timeout.connect(update1)
self.timer.start(10)
main_plot.py Code:
import array
import random
from pyqtgraph import PlotWidget
import pyqtgraph as pg
import ble
import sys
import Show_EMG
from PyQt5 import QtCore, QtWidgets
import _thread
class Ui_Form(object):
def __init__(self):
super().__init__()
def setupUi(self, Form,**kwargs):
Form.resize(820, 454)
Form.setObjectName("Form")
plot1 = Show_EMG.Plot_Show(Form=Form, y=10, x=10, data=0, text="sEMG2 Voltage")
plot2 = Show_EMG.Plot_Show(Form=Form, y=10, x=140, data=1, text="sEMG2 Voltage")
plot3 = Show_EMG.Plot_Show(Form=Form, y=10, x=270, data=2, text="sEMG3 Voltage")
plot4 = Show_EMG.Plot_Show(Form=Form, y=280, x=10, data=3, text="sEMG4 Voltage")
plot5 = Show_EMG.Plot_Show(Form=Form, y=280, x=140, data=4, text="sEMG5 Voltage")
plot6 = Show_EMG.Plot_Show(Form=Form, y=280, x=270, data=5, text="sEMG6 Voltage")
plot7 = Show_EMG.Plot_Show(Form=Form, y=550, x=10, data=0, text="sEMG7 Voltage")
plot8 = Show_EMG.Plot_Show(Form=Form, y=550, x=140, data=0, text="sEMG8 Voltage")
self.gridLayoutWidget = QtWidgets.QWidget(Form)
self.gridLayoutWidget.setGeometry(QtCore.QRect(550, 270, 261, 121))
self.gridLayoutWidget.setObjectName("gridLayoutWidget")
self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
self.gridLayout.setContentsMargins(0, 0, 0, 0)
self.gridLayout.setObjectName("gridLayout")
self.pushButton = QtWidgets.QPushButton(Form)
self.pushButton.setGeometry(QtCore.QRect(370, 410, 75, 23))
self.pushButton.setObjectName("pushButton")
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
self.pushButton.setText(_translate("Form", "开始记录"))
Form.setWindowTitle(_translate("Form", "Form"))
def main():
app = QtWidgets.QApplication(sys.argv)
Form = QtWidgets.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
if __name__ == "__main__":
_thread.start_new_thread(main)
_thread.start_new_thread(ble.ble)
BLE代码的更多细节：https://gist.github.com/allrobot/1547447f313942f278118cb2e569f59f
上面尝试添加多线程,但是没有什么效果，似乎是引用QTimer引发的错误？
请问代码需要作出什么改动，使多个自定义绘图组件不会崩溃呀？ 不要用_thread,这个在Pyqt里很容易和它内部冲突导致崩溃,试试threading ccwuax 发表于 2022-3-31 14:55
不要用_thread,这个在Pyqt里很容易和它内部冲突导致崩溃,试试threading
刚才改threading了，还是自我崩溃，看来可能不是多线程的原因，应该是自定义组件类有问题，可不知道哪里出问题了。。。
import ble
import sys
import Show_EMG
from PyQt5 import QtCore, QtWidgets
import threading
class Ui_Form(object):
def __init__(self):
super().__init__()
def setupUi(self, Form,**kwargs):
Form.resize(820, 454)
Form.setObjectName("Form")
thread1=threading.Thread(target=Show_EMG.Plot_Show(Form=Form, y=10, x=10, data=0, text="sEMG2 Voltage"))
thread2=threading.Thread(target=Show_EMG.Plot_Show(Form=Form, y=10, x=140, data=1, text="sEMG2 Voltage"))
thread3=threading.Thread(target=Show_EMG.Plot_Show(Form=Form, y=10, x=270, data=2, text="sEMG3 Voltage"))
thread4=threading.Thread(target=Show_EMG.Plot_Show(Form=Form, y=280,x=10, data=3, text="sEMG4 Voltage"))
thread5=threading.Thread(target=Show_EMG.Plot_Show(Form=Form, y=280,x=140, data=4, text="sEMG5 Voltage"))
thread6=threading.Thread(target=Show_EMG.Plot_Show(Form=Form, y=280,x=270, data=5, text="sEMG6 Voltage"))
thread7=threading.Thread(target=Show_EMG.Plot_Show(Form=Form, y=550,x=10, data=0, text="sEMG7 Voltage"))
thread8=threading.Thread(target=Show_EMG.Plot_Show(Form=Form, y=550,x=140, data=0, text="sEMG8 Voltage"))
thread1.start()
thread2.start()
thread3.start()
thread4.start()
thread5.start()
thread6.start()
thread7.start()
thread8.start()
self.gridLayoutWidget = QtWidgets.QWidget(Form)
self.gridLayoutWidget.setGeometry(QtCore.QRect(550, 270, 261, 121))
self.gridLayoutWidget.setObjectName("gridLayoutWidget")
self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
self.gridLayout.setContentsMargins(0, 0, 0, 0)
self.gridLayout.setObjectName("gridLayout")
self.pushButton = QtWidgets.QPushButton(Form)
self.pushButton.setGeometry(QtCore.QRect(370, 410, 75, 23))
self.pushButton.setObjectName("pushButton")
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
self.pushButton.setText(_translate("Form", "开始记录"))
Form.setWindowTitle(_translate("Form", "Form"))
def main():
app = QtWidgets.QApplication(sys.argv)
Form = QtWidgets.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
if __name__ == "__main__":
thread_main=threading.Thread(target=main())
thread_main.start()
thread_ble=threading.Thread(target=ble.ble())
thread_ble.start() 你在线程里修改了主界面就会崩溃,用信号 这个是做实时更新的动态折线图么？如果是的话，pyecharts的显示效果更好些吧 ccwuax 发表于 2022-3-31 15:47
你在线程里修改了主界面就会崩溃,用信号
嘿！我找到问题所在了，应该是自定义绘图组件类的QTimer引发的问题
这是用CMD运行的效果图
如图所示，第一个绘图组件的没有问题，但后边的绘图组件的绘制速度不一致了 d8349565 发表于 2022-3-31 15:58
这个是做实时更新的动态折线图么？如果是的话，pyecharts的显示效果更好些吧
看看，不晓得能嵌入到qt吗
我想绘制动态曲线图的
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