Simon Willison’s Weblog

12th April 2022

TIL GUnion to combine geometries in SpatiaLite — I was playing around with [datanews/amtrak-geojson](https://github.com/datanews/amtrak-geojson), which provides GeoJSON for Amtrak stations and track segments.

Posted 12th April 2022 at 6:58 pm

Recent articles

Writing about Agentic Engineering Patterns - 23rd February 2026
Adding TILs, releases, museums, tools and research to my blog - 20th February 2026
Two new Showboat tools: Chartroom and datasette-showboat - 17th February 2026

This is a beat by Simon Willison, posted on 12th April 2022.

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