New urls

I’ve made some technical changes to my website. A practical consequence is that urls have changed. The old urls should be redirected to the new ones, but if you run into something that doesn’t work, I’d appreciate it if you let me know!

Holleweg

If you’re cycling in the Netherlands, especially in hilly areas, you may well find yourself on a road named Holleweg (Holloway). I had the idea that if you’d create a map of all the roads named Holleweg, you might end up with a simplified elevation map of the Netherlands.

Translating polls into policy outcomes

In a report on last May’s Australian election, Nick Evershed of the Guardian translated live election results into support for specific policy outcomes.

Traffic flow maps

A 1976 traffic study published by the city of Amsterdam contains beautiful traffic flow maps showing how cyclists and motorists use the city’s streets. A tweet alerted me to the fascinating history of traffic flow maps.

Scraping Airbnb

Airbnb is not exactly keen to share data that might help analyse its impact on local housing markets. In 2016, the Amsterdam Municipality decided to collect Airbnb data using a scraper - a computer programme that automates the job of retrieving information from web pages.

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