Everybody knows that R is an inferior programming language, because vector indices start from 1, whereas in real programming languages like C and Python, array indexing begins from 0. Sometimes this can be quite annoying if a problem—be it a math... [Read more...]

It’s that time of year again. And not just for Secret Santa—it’s time for the Advent of Code, a series of programming puzzles in the lead-up to Christmas. I’m doing the 2021 challenge in R—in the form of an open-source R package, to demonstrate a test-driven ... [Read more...]

R 4.1.0 has been released and has a couple of handy new features. One is a shorthand syntax for defining functions. Now, instead of writing, for example triple [Read more...]

A common task in data analysis is to merge or join two tables according to shared keys or values. The operation is perhaps most commonly associated with relational databases and structured query language (SQL) but it’s just as useful in R with data frames. Most joins are equi-joins, matching ... [Read more...]

Advent of Code is a series of programming puzzles you can tackle to hone your coding skills each day in the run-up to Christmas. This year I am attempting it using R, which can make some challenges easier or harder depending on whether they are more... [Read more...]

Advent of Code is a series of programming puzzles you can tackle to hone your coding skills each day in the run-up to Christmas. This year I am attempting it using R, which can make some challenges easier or harder depending on whether they are more... [Read more...]

My brother wrote to me this week with an interesting task: I’ve got a list of films I’ve noted down whenever I’ve seen a good review. But it’s hundreds long and I can never remember what a film is from its title and can&rsqu... [Read more...]

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How many different ways are there to create an identity matrix in R? This was an interesting little challenge set by Guillaume Nicoulaud on Twitter. Find as many way you can to create the identity matrix with #rstats. pic.twitter.com/HlhIM6mSrx— Guillaume Nicoulaud (@ordrespontane) February 3, 2018 In code golf, ... [Read more...]

How many different ways are there to create an identity matrix in R? This was an interesting little challenge set by Guillaume Nicoulaud on Twitter. Find as many way you can to create the identity matrix with #rstats. pic.twitter.com/HlhIM6mSrx— Guillaume Nicoulaud (@ordrespontane) February 3, 2018 In code golf, ... [Read more...]

I have just published an interactive graphic showing the effect of ranking scientific communities with pairwise comparison models. The visualisation is an interactive version of my (award-winning) useR!2017 poster, Ranking influential communities in networks. You can see how academic journals have been grouped into communities based on their citation behaviour, ... [Read more...]

Neural networks can seem like a bit of a black box. But in some ways, a neural network is little more than several logistic regression models chained together. In this post I will show you how to derive a neural network from scratch with just a few lines in R. ... [Read more...]

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GitHub Pages’ built-in Jekyll support makes it very easy for techie types to deploy static web sites. Simply push your plain text Markdown content to a repository and the server-side Jekyll engine will render it for the web. Markdown is good, but R Markdown is even better, assuming we ever ... [Read more...]

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