Simon Willison’s Weblog

Plot & Vega-Lite. Useful documentation comparing the brand new Observable Plot to Vega-Lite, complete with examples of how to achieve the same thing in both libraries.

Posted 4th May 2021 at 4:32 pm

Recent articles

Vibe engineering - 7th October 2025
OpenAI DevDay 2025 live blog - 6th October 2025
Embracing the parallel coding agent lifestyle - 5th October 2025

visualization 27 d3 12 observable 49 observable-plot 9

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe