Update on my earlier post: It seems that the ViewBox is receiving events, since I do get the context menu, and I can scroll/zoom using the mouse. I just can't see the result of this until I resize the MainWindow.
On Thursday, December 1, 2016 at 3:16:23 PM UTC-5, Tim Williams wrote: > > Hi. > > I'm having a similar problem. I have an application that uses gstreamer to > stream video, and I'm displaying the ImageItem to a GraphicsLayoutWidget. I > have another GraphicsLayoutWidget that has a HistogramLutItem. Sometimes > the ViewBox containing the ImageItem freezes. It doesn't even respond to > mouse events. The histogram is still live, and I can see from that that the > image data is being updated. If I just resize my main window, the ViewBox > refreshes to the last captured frame, but is still not live. Disconnecting > my camera and reconnection doesn't fix this. I have to exit the application > and restart. > > This problem seems to crop up randomly, but it happens often enough that I > need to track this down, but I don't know how. I'm fairly new to pyqtgraph > an Qt in general. > > I'm using Python 3.4, pyqtgraph 0.10.0, and PyQt5. > > > Thanks for any help. > Tim > > > On Friday, November 11, 2016 at 12:45:55 PM UTC-5, Thomas Grübler wrote: >> >> >> Hello, >> >> I write an application that displays something like an oscilloscope with >> real time values. >> >> Sometimes, it just stops updating the graph. Just when I change the >> window size, it shows the new curve, but then just one frame. >> >> The major problem is, I would like to write a bug report, but I do not >> get any error message in PyCharm. When using the debugger, all >> objects/pointers etc are present. >> Even worse, I do not have a real way to reproduce the behavior. Sometimes >> it is easy, sometimes it is not possible. >> For reproducing, I stop updating my curve entries for a minute, and then >> start again. >> My software is normally updating the curve entries every 0.01s. >> >> Any idea, how to produce an error message if it is freezing to find the >> problem? >> >> The freeze occurs using Python 3.4 (Anaconda) and with both PyQtGraph 0.9 >> and 0.10. >> >> Thanks very much! >> Thomas >> > > On Friday, November 11, 2016 at 12:45:55 PM UTC-5, Thomas Grübler wrote: >> >> >> Hello, >> >> I write an application that displays something like an oscilloscope with >> real time values. >> >> Sometimes, it just stops updating the graph. Just when I change the >> window size, it shows the new curve, but then just one frame. >> >> The major problem is, I would like to write a bug report, but I do not >> get any error message in PyCharm. When using the debugger, all >> objects/pointers etc are present. >> Even worse, I do not have a real way to reproduce the behavior. Sometimes >> it is easy, sometimes it is not possible. >> For reproducing, I stop updating my curve entries for a minute, and then >> start again. >> My software is normally updating the curve entries every 0.01s. >> >> Any idea, how to produce an error message if it is freezing to find the >> problem? >> >> The freeze occurs using Python 3.4 (Anaconda) and with both PyQtGraph 0.9 >> and 0.10. >> >> Thanks very much! >> Thomas >> > -- You received this message because you are subscribed to the Google Groups "pyqtgraph" group. To unsubscribe from this group and stop receiving emails from it, send an email to pyqtgraph+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/pyqtgraph/91afc0bb-8ecf-49cc-a6a3-f9aef18967fe%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
