Blog Archives

How Virtual Tags have transformed SCADA data analysis

July 26, 2017
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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. Continue reading → The post How Virtual Tags have transformed SCADA data analysis appeared first on The Devil is in the Data.

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The Viral Recurring Decimal: Euler Problem 26

July 19, 2017
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Proposed solution to Euler Problem 26 in the R language. Find the value of d Continue reading → The post The Viral Recurring Decimal: Euler Problem 26 appeared first on The Devil is in the Data.

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Using the iGraph package to Analyse the Enron Corpus

July 12, 2017
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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. Continue reading → The post Using the iGraph package to Analyse the Enron Corpus appeared first on The Devil is in the Data.

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Euler Problem 29: Distinct Powers

July 5, 2017
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Euler Problem 29: Distinct Powers

Proposed solution to Euler Problem 29: Distinct Powers in the R language for statistical computing. Continue reading → The post Euler Problem 29: Distinct Powers appeared first on The Devil is in the Data.

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The Ulam Spiral (Euler Problem 28)

June 28, 2017
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The Ulam Spiral (Euler Problem 28)

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? Continue reading → The post The Ulam Spiral (Euler Problem 28) appeared first on The Devil is in the Data.

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Large integers in R: Fibonacci number with 1000 digits, Euler Problem 25

June 21, 2017
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Large integers in R: Fibonacci number with 1000 digits, Euler Problem 25

Solution to Euler Problem 25 in the R language. What is the index of the first term in the Fibonacci sequence to contain 1000 digits? Continue reading → The post Large integers in R: Fibonacci number with 1000 digits, Euler Problem 25 appeared first on The Devil is in the Data.

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Lexicographic Permutations: Euler Problem 24

June 14, 2017
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Lexicographic Permutations: Euler Problem 24

Euler Problem 24 asks to develop lexicographic permutations which are ordered arrangements of objects in lexicographic order. Tushar Roy of Coding Made Simple has shared a great introduction on how to generate lexicographic permutations. Euler Problem 24 Definition A permutation is … Continue reading → The post Lexicographic Permutations: Euler Problem 24 appeared first on The Devil is in the Data.

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Tic Tac Toe Part 3: The Minimax Algorithm

June 7, 2017
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Tic Tac Toe Part 3: The Minimax Algorithm

In two previous posts, I presented code to teach R to play the trivial game of Tic Tac Toe. I thought this was an unbeatable algorithm. Alas, a comment from Alberto shattered my pride as he was able to beat … Continue reading → The post Tic Tac Toe Part 3: The Minimax Algorithm appeared first on The Devil is...

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Euler Problem 23: Non-Abundant Sums

May 31, 2017
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Euler Problem 23: Non-Abundant Sums

A solution in the R language to Euler Problem 23. Find the sum of all the positive integers which cannot be written as the sum of two abundant numbers. Continue reading → The post Euler Problem 23: Non-Abundant Sums appeared first on The Devil is in the Data.

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The Sierpinski Triangle: Visualising infinity in R

May 24, 2017
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The Sierpinski Triangle: Visualising infinity in R

Using the R programming language to draw the Sierpinski triangle fractal using the chaos game. Drawing a fractal using random numbers. Continue reading → The post The Sierpinski Triangle: Visualising infinity in R appeared first on The Devil is in the Data.

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