Vegalite issue - Splink charts won't display in databricks

[DavidFrenchSG]

Hello,

We are running Splink in a secure Databricks environment (no internet access) and are currently unable to get any of the visualisations to work.

For example, if I follow this Deduplicate 50k rows historical persons example, then this line of code:

profile_columns(df, db_api, column_expressions=["first_name", "substr(surname,1,2)"])

yields the error message Error loading script: https://cdn.jsdelivr.net/npm/vega@5?noext.

If I set alt.renderers.enable('mimetype') then I instead get this error message:

<VegaLite 5 object>

If you see this message, it means the renderer has not been properly enabled for the frontend that you are using. For more information, see
https://altair-viz.github.io/user_guide/display_frontends.html#troubleshooting`

Trying the various other suggestions at that page doesn't lead to any success.

Has anyone already dealt with this, or know what we might be able to try to get it working?

[mattijn]

What is the error you get for:?

alt.renderers.enable("jupyter ", offline=True)

[DavidFrenchSG]

Thanks for your help! I think we're getting closer - I now get this error message when trying to display altair charts using alt.renderers.enable("jupyter ", offline=True): "Could not load module anywidget from https://cdn.jsdelivr.net/npm/anywidget@~0.9.*/dist/index.js. The widget author may have not published the widget JavaScript or there may have been a network error."

Do you know why it might be trying to find the anywidget module online, even when the offline=True option has been passed?

Unfortunately, due to the way the environment is set up, I think packages need to be installed individually. All of the below are installed, are there any others that I should be checking?

altair
altair-tiles
anywidget
arro3-core
mercantile
psygnal
vegafusion
vl-convert-python
xyzservices

[mattijn]

anywidget?

https://pypi.org/project/anywidget/

[mattijn]

Oh that is already in the list

[mattijn]

Can you share the full stack trace to understand where the error is coming from?

And did you run the following as well?

import altair as alt
alt.JupyterChart.enable_offline()

Documented here: https://altair-viz.github.io/user_guide/interactions/jupyter_chart.html#offline-usage

[DavidFrenchSG]

We now think that a misconfigured firewall was contributing to the problem - once that is fixed I'll give it a shot again.