This article explains how to write academic articles and essays using R Sweave and LaTeX using the APA (American Psychology Association) template.

## Pandigital Products: Euler Problem 32

Euler Problem 32 returns to pandigital numbers, which are numbers that contain one of each digit. Like so many of the Euler Problems, these numbers serve no practical purpose whatsoever, other than some entertainment value. Euler Problem 32 in R asks to find the sum of all products whose multiplicand/multiplier/product identity can be written as a 1 through 9 pandigital.

## Analysing soil moisture data in NetCDF format with the ncdf4 library

The netCDF format is popular in sciences that analyse sequential spatial data. It is a self-describing, machine-independent data format for creating, accessing and sharing array-oriented information. The netCDF format provides spatial time-series such as meteorological or environmental data. This article shows how to visualise and analyse this data format by reviewing soil moisture data published by the Australian Bureau of Statistics.

## Pacific Island Hopping using R and iGraph

Use R as your travel guide and plan your next Pacific island hopping holiday with the igraph package. This code analyses flight routes and finds routes.

## Digit fifth powers: Euler Problem 30

A solution in R for Euler Problem 30: Digit fifth powers. Find the sum of all the numbers that can be written as the sum of fifth powers of their digits. Numberphile has a nice video about a trick to quickly calculate the fifth root of a number that makes you look like a mathematical wizard.

## Visualising Water Consumption using a Geographic Bubble Chart

A geographic bubble chart is a straightforward method to visualise quantitative information with a geospatial relationship. Last week I was in Vietnam helping the Phú Thọ Water Supply Joint Stock Company with their data science. They asked me to create a map of a sample of their water consumption data. In this post, I share this little ditty to explain how to plot a bubble chart over a map using the ggmap package.

## Data Science for Water Utilities Using R

Data Science for Water Utilities will be a new book that explains how to use R to undertake analytics for problems typical to water utilities.

## Euler Problem 29: Distinct Powers

Proposed solution to Euler Problem 29: Distinct Powers in the R language for statistical computing.

## How Virtual Tags have transformed SCADA data analysis

This article describes how to use Virtual tags to analyse SCADA data. Virtual tags provide context o SCADA or Historian data by combining information from various tags with meta data about these tags.

## Euler Problem 28: The Ulam Spiral and Quadratic primes

Proposed solution to Euler Problem 28 in the R language for statistical computing. What is the sum of the numbers on the diagonals in a 1001 by 1001 spiral?

## Using the iGraph package to Analyse the Enron Corpus

Instructions on how to use R and iGraph to analyse the Enron email corpus. This article describes how to research relationships between employees.

## Generating Quadratic Primes: Euler Problem 27

Solution to Euler Problem 27 using the R language. Find the product of the coefficients for the quadratic expression that produces the most primes.