Blog Archives

Private Security and the Pareto Principle

October 15, 2019
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Private Security and the Pareto Principle

Private Security is a big industry in South Africa. Most Private Security companies promise to provide a rapid response to every callout generated by any of their customers. There is a delicate balance between the number of response vehicles and the number of customers (and the frequency of their callouts!), which determines whether or not they are able to...

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R, Docker and Checkpoint: A Route to Reproducibility

August 28, 2019
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R, Docker and Checkpoint: A Route to Reproducibility

I need to deploy Shiny on a Windows machine. I also need to use {checkpoint} for package management. Using Docker seems to be the only reasonable approach to Shiny on Windows. But how easy would it be to also factor {checkpoint} into this setup? Only one reasonable way to find out: give it a try. Below is the simple Dockerfile I...

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R, Docker and Checkpoint: A Route to Reproducibility

July 31, 2019
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R, Docker and Checkpoint: A Route to Reproducibility

I need to deploy Shiny on a Windows machine. I also need to use {checkpoint} for package management. Using Docker seems to be the only reasonable approach to Shiny on Windows. But how easy would it be to also factor {checkpoint} into this setup? Only one reasonable way to find out: give it a try. Below is the simple Dockerfile I...

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All Roads Lead to Rome

July 28, 2019
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All Roads Lead to Rome

I was inspired by this visualisation, showing the optimal routes (by car) from the geographic centre of the USA to all counties. The proverb “All Roads Lead to Rome” immediately came to mind and I set out to hack together something along that theme. This is what was required: Find a list of major cities in Europe and Asia. Use OSRM to generate...

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All Roads Lead to Rome

July 28, 2019
By
All Roads Lead to Rome

I was inspired by this visualisation, showing the optimal routes (by car) from the geographic centre of the USA to all counties. The proverb “All Roads Lead to Rome” immediately came to mind and I set out to hack together something along that theme. This is what was required: Find a list of major cities in Europe and Asia. Use OSRM to generate...

Read more »

Recreating ‘Unknown Pleasures’ graphic

July 14, 2019
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Recreating ‘Unknown Pleasures’ graphic

For some time I’ve wanted to recreate the cover art from Joy Division’s Unknown Pleasures album. The visualisation depicts successive pulses from the pulsar PSR B1919+21, discovered by Jocelyn Bell in 1967. Album art.Data The first obstacle was acquiring the data. I found a D3 visualisation by Mike Bostock. This in turn pointed me to a CSV file in a gist...

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Comrades Marathon (2019) Splits

June 30, 2019
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Comrades Marathon (2019) Splits

I’m looking at ways to effectively visualise the splits data for the 2019 edition of the Comrades Marathon. My objectives are to provide: an overall view of the splits across the entire field and a detailed view for individual runners (relative to the rest of the field). Ridge Plot My working solution for visualising the global splits data is a ridgeline plot created...

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Medal Breakdown at Comrades Marathon (2019)

June 29, 2019
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Medal Breakdown at Comrades Marathon (2019)

A quick breakdown of the medal distribution at the 2019 edition of the Comrades Marathon. This is what the medal categories correspond to: Gold — first 10 men and women Wally Hayward (men) — 11th position to sub-6:00 Isavel Roche-Kelly (women)...

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Comrades Marathon: Start Delay

June 14, 2019
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Comrades Marathon: Start Delay

How long does it take to cross the start line at the Comrades Marathon? If you’re lucky enough to be starting in one of the batches which is close to the front then this might be a matter of seconds to a couple of minutes. But if you’re in a batch closer to the back then this could be...

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Comrades Marathon (2019) Start Delay

June 14, 2019
By
Comrades Marathon (2019) Start Delay

How long does it take to cross the start line at the Comrades Marathon? If you’re lucky enough to be starting in one of the batches which is close to the front then this might be a matter of seconds to a couple of minutes. But if you’re in a batch closer to the back then this could be...

Read more »

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