In the chronicles of cartographic history, few works have captivated the imagination, such as Claudius Ptolemy's "Geography". This monumental second-century creation is the oldest fully preserved theoretical treatise on cartography, written almost 2000 years ago. This article discusses Mapping Ptolemy's Geography with ggplot2. His cartography is not just a collection of ...

Project Euler 7 delves into the wonderful world of prime numbers. These numbers are interesting because they don't follow a predictable pattern. There is no algorithm to calculate primes, which is what makes them valuable in cryptography. As the numbers get larger, the gaps between consecutive primes also increase. There are, ...

Estimating the cost of a complex project is not a trivial task. Traditional cost estimates are full of assumptions about the future state of the market and the final deliverable. Monte Carlo cost estimates are a tool to better understand the risks ...

The Emacs package Org-Roam provides a powerful tool to take notes following the idea of the Zettelkasten method. You can write notes with all the power that Emacs provides while linking your thoughts to each other and with your bibliography. This a...

A fractal is a geometric figure in which the same pattern repeats infinitely at an ever-smaller scale. One of the most simple examples is the H-Fractal. You construct a H-Fractal by starting with the line segments that resemble the capital letter H...

Computing has come a long way in the past 75 years. I learned how to write code in the 1980s on my tiny 1 kilobyte ZX81 home computer. With only 1 kilobyte of memory, capabilities were limited, but this machine set me off on an adventure writing code in the BASIC language. An ...

Good data science has to be aesthetic to ensure that the person who consumes your data product draws the right conclusion. Storytelling with data is a craft where mathematics and aesthetics meet. For data science to provide value, it has to be sound, useful and aesthetic. The aesthetics of data ...

Part of my job at a regional water utility involves visualising operational data. We manage water and sewerage services for a large number of small and medium-sized towns in regional Victoria (Australia). Traditionally, performance reports consist of extensive tables filled with numbers with a line for each city. To make ...

I started my first website in 1996 with hand-written HTML. That became a bit of a chore, so about fifteen years, WordPress became my friend. I recently returned to a static website using Hugo. I tried the WordPress to Hugo exporter, but a lot of HTML artefacts were left in the ...

Understanding who you are is strongly related to understanding your family history. Discovering ancestors is now a popular hobby, as many archives are available on the internet. The GEDCOM format provides a standardised way to store information about ancestors. This article shows how to develop a GEDCOM reader using the ...

Understanding who you are is strongly related to understanding your family history. Discovering ancestors is now a popular hobby, as many archives are available on the internet. The GEDCOM format provides a standardised way to store information about ancestors. This article shows how to develop a GEDCOM reader using the ...

The digital water utility is a fashionable catchphrase in the water industry. Managing reliable water services requires not only a sufficient volume of water but also significant amounts of data. Water professionals continuously measure the flow and quality of the water and how customers perceive their service. Water professionals analyse ...

Text adventures dominated the computer gaming world in the 1980s. This article explains how to write interactive fiction using the R language., The post The Secret of Landusia: A Text Adventure in the R Language appeared first on The Lucid Manager.

In the 1980s and early 1990s, I spent a lot of time playing and writing text adventure games on my Atari 8-bit computer. Text adventures, or interactive fiction, are games where the player reads a story on the screen. The player can change the outcomes of the story by issuing ...

One of the essential parts of Search Engine Optimisation (SEO) is a logical site structure. Site structure relates to how the pages of a website link to each other. A well-designed structure of internal links improves the user's experience. It also helps web crawlers to find their way through the ...

The post Analyse Site Structure and Internal Linking Structure with igraph appeared first on The Lucid Manager. This article discusses how to analyse site structure and internal linking structure of a Wordpress website using the iGraph package in R. The post Analyse Site Structure and Internal Linking Structure with igraph ...

Music is an inherently mathematical form of art. Ancient Greek mathematician Pythagoras was the first to describe the logic of the scales that form melody and harmony. Numbers can also represent the rhythm of the music. Even the lyrics have a mathematical structure. Poets structure syllables and repeat words to ...

The post Decode Lyrics in Pop Music: Visualise Prose with the Songsim algorithm appeared first on The Lucid Manager. The lyrics of songs are more and more repetitive. Wihin this repetitiveness hides a summetrical beauty. The Songsim algorithm helps to decode lyrics. The post Decode Lyrics in Pop Music: Visualise ...