PyQtGraph VS Sigil

PyQtGraph - Interactive and realtime 2D/3D/Image plotting and science/engineering widgets.

Image, 3D, or data visualization applications using OpenCV and the SciPy ecosystem. The Graphics View Framework can display an image and let the user interact with it, and the Python ecosystem is very rich for image processing, data analysis, and visualization. For example, LabelMe for image labeling, PyQtGraph for scientific graphics, or custom QWidget integration in Maya.

I don't think that's related to your error though - from the backtrace, it looks like the plotWidget has plotItem attribute that's somehow been assiged to itself (or maybe some other PlotWidget) , so is just endlessly recursing as it tries to proxy the same attribute lookup (presumably 'clear') to itself. Looking at the source, the plotitem is either created as a new PlotItem() object if not provided, or passed in to the constructor, so I'd check how this gets initialised - eg. does this get set as a property in your .ui file? Are you setting it to the widget itself somehow?

I did something like this recently but I used pyqtgraph: https://www.pyqtgraph.org/

Ah, I agree, Matplotlib is for publication, so slow and pretty. For fast, I use pyqtgraph, which can do that 10 million point plot interaction. And since it's QT, it integrates seamlessly into QT applications.

As for editing your ePub file after compile, I definitely recommend either Calibre or Sigil. Either of these will be integral to a publication workflow, even if you get most of the job done with Scrivener. There is no better way to figure out what goes where or what an error message means if your book doesn't pass validation (and will help with validation itself so you don't run into that situation in the first place).

Gihub: https://github.com/Sigil-Ebook/Sigil

I recommend using Sigil for this kind of work, as you can see the changes you make to CSS in real time, and more easily find the exact element class names you'll need to work with.

If it reads like gibberish to you though, try using Sigil or this thing if it even works.

How to use: https://standardebooks.org/contribute/producing-an-ebook-ste...

The second is Sigil, which is a great editor if you prefer to work with a GUI:

GitHub: https://github.com/Sigil-Ebook/Sigil

Download Calibre. Format your manuscript in Word how you want it to look and import it into Calibre to create an ePub file. Calibre does a very good job of translating your Word formatting into the HTML required for the ePUB file. If you want to do some tidying up to the ePUB file, download and use Sigil, which is a very good tool for editing ePub files. Both software tools are free.