Blog Archives

Investigating Cryptocurrencies (Part II)

July 17, 2017
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Investigating Cryptocurrencies (Part II)

This is the second in a series of posts designed to show how the R programming language can be used with cryptocurrency related data sets.  A number of R packages are great for analyzing stocks and bonds and similar financial instruments.  These can also be applied to working with cryptocurrencies.  In this post we will focus on Bitcoin.Bitcoin has...

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Investigating Cryptocurrencies using R

July 15, 2017
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Investigating Cryptocurrencies using R

Cryptocurrencies are a fascinating phenomenon and excellent data source for analysis with R.  This post will introduce how to get a list of available currencies into R.  Wikipedia maintains a page with a list of cryptocurrencies.  These can be read from HTML into a data frame.library(httr)library(XML)results = GET("https://en.wikipedia.org/wiki/List_of_cryptocurrencies")doc = readHTMLTable(doc=content(results, "text"))View(doc)This list is not complete.  Also, an API would...

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Package rtrie on CRAN

January 7, 2017
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Package rtrie on CRAN

Just had a new package published on CRAN...rtrie :).The rtrie package allows you to quickly create Tries from a list of strings.  Example use cases for the package are word searching in games like Boggle or Scrabble or implementation of applications that  autocomplete or autocorrect text.   Incidentally, besides being great for statistics, R is an excellent language for...

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New Release of ggguitar available on CRAN

December 24, 2016
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New Release of ggguitar available on CRAN

Based on feedback ggguitar has been updated and released on CRAN.  The updated vignette includes more examples of how the package can be used.  Example below as well: Update - Blogger was reformatting the R code - so made it available in this gist instead.Merry Christmas.

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Understanding SQL and R Training Video

December 2, 2016
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Understanding SQL and R Training Video

Just had a video series released by O'Reilly Media on infiniteskills.com:https://www.infiniteskills.com/training/understanding-sql-and-r.htmlThis course shows you how to combine two of the most popular technologies used in data analytics: SQL and R.  Complete this course and you'll learn the basics of a skill set highly valued by employers around the globe.Gain experience combining SQL and R for data analytics and visualization...

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Package ggguitar on CRAN

November 30, 2016
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Package ggguitar on CRAN

The initial release of ggguitar is available on CRAN!  This package allows you to create guitar tablature in the style of ggplot2.  As a quick example, the C Major chord shown above can be created as follows.library(ggguitar)C_M -__tablature('C Major', C_M)The tablature function takes the name of the chord for the first argument and a six element vector representing the...

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SQLServer on Docker

November 19, 2016
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SQLServer on Docker

I have been looking forward to test driving Microsoft SQLServer R Services.   However, I don't run the Windows Operating System on any of my machines.  I do use Docker regularly and so was interested to hear about a new version of SQLServer that runs on Linux that is now available as a Docker container.  Although I have yet to...

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Apollo Moon Landings

October 17, 2016
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Apollo Moon Landings

Welcome to the second in a series of posts of maps-to-places-I-am-unlikely-to-visit generated by R (the previous post is here).A bit-o NASA data, the R threejs library and a few lines of code can be used to create an interactive map that identifies the landing locations of Apollo lunar landing missions.The lunar map above is better viewed using the interactive...

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The Grammar of Graphics and Radar Charts

October 15, 2016
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The Grammar of Graphics and Radar Charts

A radar chart (also known as a web chart, spider chart, or star chart) is described on Wikipedia as 'a two-dimensional chart of three or more quantitative variables represented on axes starting from the same point.'  Although this is an accurate description, it does not express the design and structure of a chart in a way that relates it...

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Map of Middle Earth in R

October 8, 2016
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Map of Middle Earth in R

Map of Middle EarthThe map above was created using ggplot2, ggmaps, and maptools in R.  These are just a few of the great R packages available for cartography and geographic applications.  Many readers of this blog will be familiar with these packages and more recent R package additions like leaflet.  But great packages are only part of the problem......

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