vaex: Help needed: Widgets not displaying in Jupyter Notebook

Hi,

I seem to be having trouble getting widgets to display in a Jupyter notebook and I’m not sure if I’m missing something, currently, when executing a widget command I get no error, but the widget does not appear in the notebook; I have verified that ipywidgets (such as IntSlider() work fine.

I am running Python 3.7.9 on Linux (ubuntu 18.04), steps to reproduce are:

!pip install vaex==4.0.0a13

import vaex
import vaex.jupyter.model as vjm

import numpy as np
import matplotlib.pyplot as plt

df = vaex.example()
df


heatmap_xy = df.widget.heatmap(df.x, df.y, selection=[None, True])
heatmap_xy 

Any help here is appreciated!

Thanks, Chris