PSL Analysis from 2002 to Current Season

A guest post from Sbusiso Mkhondwane

Introduction

I have been going back and forth for a while about doing some form of data analysis and sharing it. The first attempt was to collect the data for my car’s movement, from the locations I visited to the car’s speed. I have four years worth of data and in a tidier format. Part of the reason for wanting to do data analysis was the R language and the http://r4ds.had.co.nz book. R appeared like a tool that allowes you to feel as if you are in control and it’s flexable. What do I mean here? Hadley Wickham once said something along these lines; “The different between R language and other languages: Programming languages provide contracts. These are the things you can do and these are the things you can’t do. In many programming languages that’s like a legal contract. It spells out explicitly like what you can do and can’t do, and things you can’t do there’s no way you can do them. While with R, it’s more like a contract between friends, like you really shouldn’t do this but if you really want to, you can go ahead and do it.”. Another plus for doing this is to improve my data science skill and hopefully get some useful advise from the R community. Continue reading “PSL Analysis from 2002 to Current Season”

The Hard Problem of Data Analytics in Africa

One of the attributes of really good technology is that it hides the complexity of what goes on in the background, while still being useful. Depending on how old you are, you may remember having to set up a TV by selecting UHF or VHF with a little switch and then slowly turning a dial until a picture appeared out of the fuzz. Then you’d adjust the “bunny ears” aerial, and twiddle the tuner again to see if you could make the image even better. Continue reading “The Hard Problem of Data Analytics in Africa”

Really Old Data Visualisation Book

If you are into this sort of thing, Microsoft and the Internet Archive have digitised a copy of the 1919 epic Graphic Methods for Presenting Facts by Willard C. Brinton. While not one of the original seminal works, it still shows that the thinking that goes into basic information display is a lot older than we generally assume. And it has some very cool illustrations, which today would get you a post on viz.wtf.

War, slightly more wasteful than coffee

Continue reading “Really Old Data Visualisation Book”

One Year of Comrades Training

On a recent job at Discovery to do some analytics for Vitality, I was looking at data that is recorded into their platform as part of their insurance linked wellness program. There are various activities that are tracked as part of the program and a fair amount of it is running data. Given the size of their customer base it’s fair to assume that many of them have run the Comrades Marathon, and I wanted to see what all those runner’s various training programs looked like. Continue reading “One Year of Comrades Training”