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how to save png directly from python script?

See original GitHub issue

I note that when I do an Altair visualization (example.html), there’s an “export PNG” button beneath it. Can I call this straight from python? I’d like to be able to:

open('example.html', 'w').write(chart.to_html())
open('example.png', 'w').write(chart.to_png())

but that does not appear to be possible, and I can’t obviously see how to export png from python directly.

Issue Analytics

State:
Created 7 years ago
Reactions:2
Comments:12 (7 by maintainers)

Top GitHub Comments

2reactions

johanoviccommented, Feb 3, 2020

Is there three years later maybe a native way to save altair/vega figures to png/jpeg/svg without a headless browser?

Many thanks for your great work

1reaction

jakevdpcommented, Feb 2, 2021

A possible approach is to save charts without a headless browser is to use Kaleido; tracking issue is here: https://github.com/altair-viz/altair_saver/issues/85

The main challenge is finding someone who wants to put in the time to try it!

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