error when using PlotWidget or addPlot in QT .ui

[Jan Sebastian]

so, I try to follow the example from: https://groups.google.com/forum/#!msg/pyqtgraph/kGHogKpcZC0/OgVijQEPEgAJ;context-place=forum/pyqtgraph and https://gist.github.com/friendzis/4e98ebe2cf29c0c2c232 to change my axis x format into time  and this is the example of my code:

from PyQt4 import QtCore,QtGui,uic

from PyQt4.QtCore import QTime, QTimer

import sys

import time

from pyqtgraph import ViewBox, PlotWidget, PlotItem

#import pyqtgraph as pg

from pyqtgraph.Qt import QtCore, QtGui

from collections import deque

from customthread import customthread 

class TimeAxisItem(pg.AxisItem):

    def __init__(self, *args, **kwargs):

        super().__init__(*args, **kwargs)

    def tickStrings(self, values, scale, spacing):

        a = 'a'

        # PySide's QTime() initialiser fails miserably and dismisses args/kwargs

        return [QTime().addMSecs(value).toString('mm:ss') for value in values]

qtCreatorFile = "mejaGetar2.ui"

Ui_MainWindow,QtBaseClass = uic.loadUiType(qtCreatorFile)

class MyApp(QtGui.QTabWidget,Ui_MainWindow):

    akselerasi = 0

    #threads = []

    #threads2 = []

    curve = None

    curve2 = None

    dataGraph = deque(maxlen=20)

    x1 = []

    y1 = []

    aa = False

    aa2 = False

    def __init__(self):

        QtGui.QTabWidget.__init__(self)

        Ui_MainWindow.__init__(self)

        self.setupUi(self)

        self.akselerasi.setMinimum(0)

        self.akselerasi.setMaximum(30)

        self.akselerasi.setValue(0)

        self.akselerasi.valueChanged.connect(self.valueAkselerasi)

        self.akselerasi.sliderReleased.connect(self.getThread)

        self.threadDinamis = customthread ()

        self.threadDinamis.dataThread.connect(self.runningDynamic)

        MyApp.curve = self.graph1.plot(pen=(255,0,0))

        self.graph1.setRange(xRange=None, yRange=[-1, 1 ])

        self.graph1.setLabel('bottom', 'time', 's')

        self.graph1.PlotWidget(axisItems={'bottom': TimeAxisItem(orientation='bottom')})

        self.graph1.showGrid(x=True, y=True)

        self.graph1.setMouseEnabled(x=False, y=False)

        

        self.l1.setText(str(self.akselerasi.value()))

        

        

    def getThread(self):

        

        if self.sender() == self.akselerasi:

            MyApp.akselerasii = int(self.akselerasi.value())

        if MyApp.akselerasii > 0:

            if MyApp.aa == True:

                print("second")

                minRange = int(self.akselerasi.value()) * -1

                self.graph1.setRange(xRange=None, yRange=[minRange, int(self.akselerasi.value()) ])

                self.threadDinamis.trigrer(MyApp.akselerasii)

                

            else:

                minRange = int(self.akselerasi.value()) * -1

                self.graph1.setRange(xRange=None, yRange=[minRange, int(self.akselerasi.value()) ])

                MyApp.aa = True

                

                print("first")

                self.threadDinamis.trigrer(MyApp.akselerasii)

                self.threadDinamis.start()

        else:

            self.threadDinamis.stop()

            #self.graph1.clear()

            MyApp.aa = False

            MyApp.dataGraph.clear()

            #MyApp.dataGraph = deque(maxlen=20)

            MyApp.x1 = []

            MyApp.y1 = []

    def runningDynamic(self,generateData):

        #print(generateData['x'])

        MyApp.dataGraph.append({'x': generateData['x'], 'y': generateData['y']})

        MyApp.x1 = [item['x'] for item in MyApp.dataGraph]

        MyApp.y1 = [item['y'] for item in MyApp.dataGraph]

        MyApp.curve.setData(x=MyApp.x1, y=MyApp.y1)

    def valueAkselerasi(self):

        value = self.akselerasi.value()

        self.l1.setText(str(value))     

if __name__ == "__main__":

    app = QtGui.QApplication(sys.argv)

    window = MyApp()

    window.show()

    sys.exit(app.exec_())

but, I got an error in self.graph1.PlotWidget(axisItems={'bottom': TimeAxisItem(orientation='bottom')}) . the error says:

Traceback (most recent call last):

  File "D:\this\is\my\python\directory\app.py", line 153, in <module>

    window = MyApp()

  File "D:\this\is\my\python\directory\app.py", line 49, in __init__

    self.graph1.PlotWidget(axisItems={'bottom': TimeAxisItem(orientation='bottom')})

  File "C:\Python36\lib\site-packages\pyqtgraph\widgets\PlotWidget.py", line 79, in __getattr__

    raise NameError(attr)

NameError: PlotWidget

so, I don't realy understand wath the error mean and how to fix it, thank you 

[Jan Sebastian]

finally I can solve the problem by using this following tutorial: https://nikolak.com/pyqt-qt-designer-getting-started/