Dec-22-2020, 02:00 PM
Hi,
I'm trying to do my first steps in programming a gui in PyQt5.
In general I want to plot data in a 'x' and 'y' graph. To do so I want to use PyQtGraph.
I started my own programming but while compiling I always got the error message
'TypeError: isdeleted() argument 1 must be sip.simplewrapper, not PlotWidget'
I first thought that it's my fault but then I've tried a lot of examples of the PyQtGraph GitHUb page.
No matter which code I use, I alwas get this error. For example I've tried this code
Thanks a lot for your help.
Johna
I'm trying to do my first steps in programming a gui in PyQt5.
In general I want to plot data in a 'x' and 'y' graph. To do so I want to use PyQtGraph.
I started my own programming but while compiling I always got the error message
'TypeError: isdeleted() argument 1 must be sip.simplewrapper, not PlotWidget'
I first thought that it's my fault but then I've tried a lot of examples of the PyQtGraph GitHUb page.
No matter which code I use, I alwas get this error. For example I've tried this code
import pyqtgraph as pg from pyqtgraph.Qt import QtCore, QtGui import numpy as np pg.mkQApp() pw = pg.PlotWidget() pw.show() pw.setWindowTitle('pyqtgraph example: MultiplePlotAxes') p1 = pw.plotItem p1.setLabels(left='axis 1') ## create a new ViewBox, link the right axis to its coordinate system p2 = pg.ViewBox() p1.showAxis('right') p1.scene().addItem(p2) p1.getAxis('right').linkToView(p2) p2.setXLink(p1) p1.getAxis('right').setLabel('axis2', color='#0000ff') ## create third ViewBox. ## this time we need to create a new axis as well. p3 = pg.ViewBox() ax3 = pg.AxisItem('right') p1.layout.addItem(ax3, 2, 3) p1.scene().addItem(p3) ax3.linkToView(p3) p3.setXLink(p1) ax3.setZValue(-10000) ax3.setLabel('axis 3', color='#ff0000') ## Handle view resizing def updateViews(): ## view has resized; update auxiliary views to match global p1, p2, p3 p2.setGeometry(p1.vb.sceneBoundingRect()) p3.setGeometry(p1.vb.sceneBoundingRect()) ## need to re-update linked axes since this was called ## incorrectly while views had different shapes. ## (probably this should be handled in ViewBox.resizeEvent) p2.linkedViewChanged(p1.vb, p2.XAxis) p3.linkedViewChanged(p1.vb, p3.XAxis) updateViews() p1.vb.sigResized.connect(updateViews) p1.plot([1,2,4,8,16,32]) p2.addItem(pg.PlotCurveItem([10,20,40,80,40,20], pen='b')) p3.addItem(pg.PlotCurveItem([3200,1600,800,400,200,100], pen='r')) ## Start Qt event loop unless running in interactive mode or using pyside. if __name__ == '__main__': import sys if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'): QtGui.QApplication.instance().exec_()So what does it mean? I'm working on Win64 and Anaconda/Spyder.
Thanks a lot for your help.
Johna