How to make Matplotlib mouse interactive plots less laggy?

Question

I want to make some interactive plots with Matplotlib, by plotting some extra graphics objects on mouse movements. Luckily, one of the interactive plot I want to present has already been coded and can be found on the Matplotlib website as a code example: looking glass example .

Unfortunately, I find the performance very poor; in the gif you can see how much the rendering is lagging compared to the mouse movement.

Is it this the best performance that Matplotlib can provide for this task? I need to embed the interactive plots in some PyQt applications, so I could always switch to PyQtGraph, but if possible I would like to continue using Matplotlib.

Answer 1

The new package Quibbler might be helpful here: https://github.com/Technion-Kishony-lab/quibbler

for transparency: I am one of the developers of Quibbler.