Simon Willison’s Weblog

Doing things with Ordnance Survey OpenData. Jo Walsh’s guide to processing Ordnance Survey OpenData using PostgreSQL and PostGIS.

Posted 20th May 2010 at 3:22 pm

Recent articles

Two new Showboat tools: Chartroom and datasette-showboat - 17th February 2026
Deep Blue - 15th February 2026
The evolution of OpenAI's mission statement - 13th February 2026

mapping 54 open-data 15 ordnancesurvey 3 postgis 6 postgresql 157 recovered 213 jo-walsh 1

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