Monthly Archives: August 2014

Parsing Domain Names in R with tldextract

August 4, 2014
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The R Language is really good at data and statistical analysis, but when it comes to working with information security data it has a few holes that need plugging up. Bob has been doing a couple of posts using Rcpp to do things like Basic DNS Lookups, TXT lookups, and IPv4 Conversions. I wanted to add to some of that work with a quick package for parsing domain names. While *.com,...

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Introducing the Shiny App DThiring

August 4, 2014
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Well it has a been a long time since I have written anything on this blog.  I am long overdue.  I've been terribly busy learning new things and getting on with life.  One of the things I have learned is building R applications using Shin...

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Exploring the United Nations population projections with rCharts

August 4, 2014
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Please note: some NVD3 charts are performing very slowly in the latest version of Google Chrome at the moment; see this GitHub issue. As such, this post is best viewed in other browsers. I recently came across this really interesting post from Ben Jones that explores the history and future of world population change with Tableau. I haven’t...

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Sorted HTML Tables and Javascript Libraries

August 4, 2014
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Sorted HTML Tables and Javascript Libraries

A few days ago StatsInTheWild asked the following question In the R function “sortable.html.table”, it's sorting 9.2 higher than 30.5 because of the leading digit. How do I fix this? — SITW (@StatsInTheWild) July 23, 2014 So we had a few exchanges where I thought you could use sprintf and be done but it didn't

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Statisticians get the PR treatment

August 4, 2014
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I'm here at the JSM conference in Boston, the latest annual gathering of 6000+ statisticians from North America and around the world. (Revolution Analytics is a proud sponsor of the conference.) One of the great things to see is that the American Statistical Association, the organizer of the conference and the professional body for statisticians, is putting some effort...

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butteRfly

August 4, 2014
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butteRfly

Float like a butterfly, sting like a bee (Muhammad Ali) The Butterfly Curve was discovered by Temple H. Fay when he was in Southern University, Mississippi, and rapidly gained the attention of students and mathematicians because of its beautiful simmetry. Small dots of this plot are generated according to parametric equations of the Butterfly Curve. Big

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Basic Forward and Reverse DNS Lookups In R (with Rcpp)

August 4, 2014
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Back in April, we showed you how to use a C resolver library to make many different kinds of DNS lookups. More oft than not, such complete functionality is not necessary, but R still only provides nsl to get an IPv4 address of a given hostname, which is woefully inadequate. I needed to write an R implementation of the...

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Review of “Building interactive graphs with ggplot2 and shiny”

August 4, 2014
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Recently, Packt published a video course with the above title, and I've just spent a pleasant morning reviewing it on Packt's request. Pleasant, because I think the course gives an excellent introduction to both ggplot2 and shiny. The course is … Continue reading →

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Package rankings, task view rankings and much more: the Rdocumentation poster

August 4, 2014
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Package rankings, task view rankings and much more: the Rdocumentation poster

Especially for useR! 2014 we created a poster on Rdocumentation.org, our R documentation aggregator that lets you search packages from CRAN, Bioconductor and GitHub. We received a lot of positive and valuable feedback on it, so we decided to share it again via our blog. The Rdocumentation poster answers questions such as: What are the 10

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Another Failed Volatility Histeresis: Ehlers’s Own Idea

August 3, 2014
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Another Failed Volatility Histeresis: Ehlers’s Own Idea

This week, I attempted to use Ehlers’s own idea from this presentation. Essentially, the idea is that when an indicator … Continue reading →

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