GPS Hiking and The Evolution of Navigation

On sunday August 25, 2015 I provided a talk/workshop for a local knowledge network of friends and acquaintances in Amsterdam. TLDR; see gps.justobjects.nl.  Originally, I would talk about “Hiking with GPS”. But as I started pondering about this subject I decided to broaden the content to include also the evolution of navigation.…

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JPEG is Dead, Long Live JPEG!

TL;DR: see this GitHub issue for summary (Dutch but the pictures there and Figure 1 tell the story). Somewhere around 1995, building my first website, it was already quite a feat to embed images. Non-aware of image-formats I played with (animated!) GIF and JPEG. Naively image-editing I noticed that my JPEGs became worse and…

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Into the Weather – Part 2 – Fun with Raspberry Pi

This is a follow-up to “Into the Weather – Part 1 – Exploring weewx”. Sorry, still almost no geospatial content for now. To recap: I am trying to setup an infrastructure where measurements from a Davis Vantage Pro2 Weather Station are collected and exposed to web services, most notably OGC Services like…

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