CODEWITHSUNDEEP
python-3.xaltair
cyneo
cyneo

Reputation: 946

Altair Offline Rendering

How can I create interactive charts that can be shared to others with limited internet connection?

My situation is such that I can generate and view the interactive charts I want, but due to VPN restrictions, my colleagues are not able to open the html charts that I generate. From the error message below, it seems like they are not able to render due to inability to connect to the web.

(error loading script https //cdn.jsdelivr.net/npm//vega@5 noext)

Upvotes: 4

Views: 980

Answers (1)

jakevdp
jakevdp

Reputation: 86463

Interactive Altair/Vega-Lite charts require several javascript libraries to render the charts; in most cases these libraries are loaded from an external CDN, and so the chart will not be viewable without an internet connection.

You can get around this using the altair_saver package, which is able to save HTML charts in "inline" mode, where the required javascript libraries are embedded directly in the chart output.

For example:

import altair_saver
chart = alt.Chart(df).mark_point() #...

altair_saver.save(chart, 'chart.html', inline=True)

The resulting file can be viewed in a javascript-enabled web browser, and should work even without an internet connection.

Upvotes: 5

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