Emit #5 – Assembling and Deploying 5 AirSensEURs – a Story in Pictures

This is Emit #5, in a series of blog-posts around the Smart Emission Platform, an Open Source software component framework that facilitates the acquisition, processing and (OGC web-API) unlocking of spatiotemporal sensor-data, mainly for Air Quality and other environmental sensor-data like noise. Summer holidays and a heat-wave strikes The Netherlands. Time…

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Emit #4 – Push or Pull?

This is Emit #4, in a series of blog-posts around the Smart Emission Platform, an Open Source software component framework that facilitates the acquisition, processing and (OGC web-API) unlocking of spatiotemporal sensor-data, mainly for Air Quality and other environmental sensor-data like noise. A lot of things have happened with the project…

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Emit #3 – Things are Moving

This is Emit #3, in a series of blog-posts around the Smart Emission Platform, an Open Source software component framework that facilitates the acquisition, processing and (OGC web-API) unlocking of spatiotemporal sensor-data, mainly for Air Quality. In Emit #1, the big picture of the platform was sketched. Subsequent Emits will detail…

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Emit #2 – On Air Quality Sensors

This is Emit #2, in a series of blog-posts around the Smart Emission Platform, an Open Source software component framework that facilitates the acquisition, processing and (OGC web-API) unlocking of spatiotemporal sensor-data, mainly for Air Quality. In Emit #1, the big picture of the platform was sketched. Subsequent Emits will detail…

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Emit #1 – Into Spatiotemporal

One of my new year’s resolutions for 2018 was to “blog more”. Not being very active on the well-known social media: a bit tired of Twitter, never really into Facebook, bit of LinkedIn.  OSGeo mailing lists, GitHub and Gitter is where you can find me most (thanks Jody, for reminding!). And…

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Deploying Open Source Geospatial Software – Part 1: Challenges

My blog has been quiet for some time. As many of us I’ve been busy doing projects, all involving Open Source Geo (OSGeo) software. Partly development, writing software, I love it, but also more and more in “what comes next”: deploying and maintaining “the application” with all of its dependencies. For…

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Unlocking Sensor Data – I’ll send an SOS to the world

Revealing: the title refers, for the younger readers, to a great 1979-hit by The Police as expanded below. To be played at the loudest possible volume. If you don’t see anything here below try the YouTube link directly: https://www.youtube.com/watch?v=MbXWrmQW-OE. One of the main aspects that glues the OSGeo-world together are OGC-standards: WMS, WFS,…

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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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Tales from Topographic Lowlands

As far as Open geo-data is concerned, the Netherlands goes through prosperous times: country-wide datasets for detailed topography (BRT, BGT), buildings and addresses (BAG), 0.5m elevation data (AHN2) and many more are available for download. Even 3D-versions for several of these datasets are upcoming. These and other nuggets can be found and downloaded via our national geo-portal:…

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