remark: ipympl-0.6.2 seems to have no interactive feature working when under vscode-python

[stonebig]

playing on latest Jupyter, with lates ipymml, with VScode-Python of today (new version next week):

• ipympl does render,
• but interactvity seems not working.

code tried:

%matplotlib widget
# Testing matplotlib interactions with a simple plot
import matplotlib.pyplot as plt
import numpy as np
# warning ; you  need to launch a second time %matplotlib widget, if after a %matplotlib inline 
%matplotlib widget

fig = plt.figure()  #plt.figure(1)
plt.plot(np.sin(np.linspace(0, 30, 100)))
plt.show()

[ianhi]

Do other jlab3 compatible widgets work in vscode? For exmample does a slider from ipywidgets 7.6 work?

[asteppke]

An update to this issue: with the current ipympl (0.8.4) and Visual Studio Code 1.63.2 the widget and interactivity work well.

What is still missing is that the png representation is not shown if the notebook is saved and reload in VS code which works in Jupyterlab.

[martinRenou]

Thank you for the update!

What is still missing is that the png representation is not shown if the notebook is saved and reload in VS code

Is there something showed or is the cell output empty? I guess it's an issue on the side of VSCode, we won't be able to do much about it.

[asteppke]

Upon closer inspection VS code shows a tiny icon on the left:

This allows you to change the mimetype interpretation for this cell output, and, when selecting mimetype as image/png the plot shows up correctly. So this now only requires a tiny change on the VS code people to show the image/png as a default if the application/vnd.jupyter.widget-view+json does not render any output.

This has in general come so far and is is fantastic to see all these bits coming together.

[martinRenou]

Great :)

this now only requires a tiny change on the VS code people to show the image/png as a default if the application/vnd.jupyter.widget-view+json does not render any output

I guess it could be worth an issue/question in https://github.com/microsoft/vscode-jupyter.

I am surprised the application/vnd.jupyter.widget-view+json is not able to show up, I would expect the latest release to contain the static plot at least if there is no live kernel. Are other kinds of widgets like ipywidgets.IntSlider able to render when doing the save then reload?

[asteppke]

Yes, let's raise an issue there for the vscode people to address this.

Regarding the other widgets, the IntSlider works in general, when reloading an IntSlider I get another icon at the side but no rendered output:

When using that icon to change the mimetype to text/plain it yields something useful though as a text representation: IntSlider(value=0)

[martinRenou]

Ok, so I suppose it could be a general issue of vscode-jupyter not able to render any application/vnd.jupyter.widget-view+json on reload.

Please put a link here if you open a related issue on the vscode-jupyter repo :)

I will close this one as resolved.

[asteppke]

Great, let's see what the vscode-jupyter people can do about this. I created an issue at microsoft/vscode-jupyter#8635.

[martinRenou]

Thanks!