14 days ago

Inspecting air pollution data from OpenAQ using Colab, Pandas, and BigQuery

OpenAQ is publishing real-time air quality data from around the world to BigQuery. Today, I have poked around in the dataset to inspect air quality from many places of the world.

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18 days ago

Running the North Downs Way─XNRG Pilgrim's Challenge 2019

Postcard-Britain! The 66 mile race course took me from Farnham over the very pretty & snow-covered North Downs, until the snow subsided and was replaced by mud, past Box Hill until Redhill and back the next day. This post is about the madness that is required to enjoy such an adventure, and the odd things that you might encounter.

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69 days ago

Runsightseeing: Thirteen London parks in a day

London has so many parks. Today, I managed to run and visit thirteen of them on an extended sightseeing trip, discovering various artwork while doing so, and passing through many different neighbourhoods. I failed to complete the XNRG Santa Virtual Ultra Challenge, but I regret nothing.

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89 days ago

Running the Ridgeway─Druid's Challenge 2018

A comeback to the world of ultra-running. This time, I ran (and walked) the Ridgeway from Tring to Swindon in three days as part of the XNRG Druid’s Challenge.

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140 days ago

What probability theory tells you about starting on time

Whether you are an event organizer waiting for participants to turn up or whether you are a bus driver waiting for passengers running to catch the bus, there is a dilemma: if you are so kind and wait for everyone to arrive, you make everyone else wait. Let’s explain the dilemma with probability theory.

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234 days ago

Analysing Strava activities using Colab, Pandas & Matplotlib (Part 4)

How do you analyse Strava activities—such as runs or bike rides—with Colab, Python, Pandas, and Matplotlib? In my fourth article on this topic, let’s invite scikit-learn and NLTK to the party, and apply some Machine Learning.

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253 days ago

Analysing Strava activities using Colab, Pandas & Matplotlib (Part 3)

How do you analyse Strava activities—such as runs or bike rides—with Colab, Python, Pandas, and Matplotlib? In my third article on this topic, I am demonstrating how to visualize the data in different ways.

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267 days ago

Analysing Strava activities using Colab, Pandas & Matplotlib (Part 2)

How do you analyse Strava activities—such as runs or bike rides—with Colab, Python, Pandas, and Matplotlib? In my second article on this topic, I am demonstrating how to group and aggregate the data in many different ways.

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271 days ago

Analysing Strava activities using Colab, Pandas & Matplotlib (Part 1)

How do you analyse Strava activities—such as runs or bike rides—with Colab, Python, Pandas, and Matplotlib? In this post, I am demonstrating how to get started, and will give you a taster of what is possible with this state-of-the-art technology for data analysis.

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292 days ago

Run to work—Notes on kilometer 124

In the last five weeks: 15 run-commutes completed, 124 kilometers logged, £43.50 saved on public transport. The trick? Always having my kit ready the night before.

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322 days ago

Misleading infographics: How Not To Bubble Chart

I discovered a misleading infographic on mortality cause by gender in the OECD report “Health at a Glance 2017” while working on a course assignment. A few notes on how not to do bubble charts.

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329 days ago

Run to work, revisited

With my recent move to East London, running to work has become a topic again. Surprisingly as it may sound, getting the logistics right is the hardest part. Here is my plan on my comeback to run-commutes.

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454 days ago

A Walk in The Woods: 2017 Edition of Wendover Woods 50

After having watched the second half of the film adaptation of Bill Bryson’s A Walk in The Woods, I can’t help but spot the remote similarities: an ambitious challenge, an uncompleted journey through the “woods”, and a literary attempt to explain the adventure. In my case, I gave up during a footrace of 50 miles and about 3000 m elevation gain, known in the runner’s world as Wendover Woods 50.

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485 days ago

Memories from University: Teaching the Computer to play Connect Four

How do you teach a computer to play games? I took a classic brute-force approach along with some techniques to make the search for a good move faster. Can you beat the machine?

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503 days ago

Lakes in a Day: I've dunnit, finally

Finally my dream has come true, even though things were different than imagined: A race report of Lakes in a Day, traversing the Lake District in 50 miles with 4000 m ascent.

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577 days ago

North of the Arctic Circle: Hiking adventures in Sweden

My dream of returning to Northern Sweden for some hiking came true this year. Streams and lakes, puddles and pools, snow and ice, mountains and valleys; orienteering, pathfinding, river crossing, wild camping. Fabulous views rewarded the efforts I put in.

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662 days ago

Running the XNRG South Downs Devil's Challenge 2017

It’s bank holiday weekend in the UK. What better thing to do than joining a bunch of nutters for a three-day foot race from Winchester to Eastbourne, covering 156 kilometers and many hills? I could not come up with a better idea, so here is how it went.

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679 days ago

Garden of England: Running from Ashford to Canterbury

This Saturday, I decided to explore the North Downs Way between Wye and Canterbury. A trip report touching many things: navigating with phone and compass instead of maps, public footpaths and plough teeth, explosives and barbed wire, parking lots in unexpected places, and oceans of bluebells.

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696 days ago

Three Years in the United Kingdom: Need Candles in the Dark

Exactly three years after my arrival in London, the UK Government has triggered article 50. The Brexit drama continues, with decision-making in the dark being a defining part of the play. It is time for a few personal reflections from a “first-row seat”.

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740 days ago

Missing Maps: Use Your Phone for the Better

The opportunities created by the advance of technology and the efforts of people are amazing. In this post, I’ll show how to take advantage and use the Mapswipe App as a first step to gain valuable insights for NGOs operating in places of the world for which there is no proper map yet.

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769 days ago

Country to Capital 2017: Resurrection

The annual Country to Capital race takes a few hundred enthusiasts from Wendover to London Paddington in what is said to be the opener of the ultra marathon season. There are stark contrasts between country and capital, and it was interesting to observe the gradual transition.

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775 days ago

Utility theory and pedestrian behaviour in London

A not-so-serious attempt at explaining pedestrian behaviour in London using utility theory. Ever wondered why certain pedestrians jump so readily in front of passing lorries? Ever wonder why some are keen to collide with approaching cyclists? Sorry, I don’t have the answer, either. But I am still curious. And in a mood to rant. Just a little bit.

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798 days ago

How data can assist us in forming good habits

Habits are an important key to success. But how do we establish a habit? How do we know whether our perception aligns with reality? How do we decide about the next change to make? Did we succeed? I want to know. A reflection on habits, insights from data using running as an example.

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818 days ago

Wendover Woods 50: First Ultramarathon

November. Saturday. Dark, foggy, chilly. These were the conditions for around 200 loopy runners to set off on a loopy five-lap course through the small, pretty & hilly Wendover Woods. 50 miles later, and after arduous 3000m of ascent, I got a fairly thorough taster lesson in ultrarunning.

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822 days ago

Missing Maps: Putting People on the Map

There are places on our planet where people live but there is no map. How are NGOs like Médecins Sans Frontières (MSF) supposed to do field work if they don’t know where people live, how many, how to get there? The Missing Maps project is addressing the issue via crowdsourcing. I gave it a try, and here’s what I think.

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