Clarifying difference between Ratio and Interval Scale of Measurement Clarifying difference between Ratio and Interval Scale of Measurement Introduction Recently while preparing lecture on scales of measurements and types of statistical data, I came across two scales of measurement when numbers are used to denote a quantitative variable. I took ... [Read more...]

Using package repositories to recreate the past, distribute the present, and protect against the future by Gabriel Becker (@groundwalkergmb) Bioinformatics and Computational Biology Genentech Research and Early Developmen 1. Have you ever needed to reach into the distant past … to recreate a years old result? Take - as an arbitrary example ... [Read more...]

Mateusz Żółtak asked me to spread the word about his new R package for parameterized SQL queries. Below you can find the copy of package vignette. If you work with SQL in R you may find it useful. Mateusz Żółtak The package RODBCext is an extension of the RODBC database ... [Read more...]

After my last post text-mining ESA Annual Meeting abstracts, Nash Turley was interested in the presence of the term “natural history” in ESA abstracts. I decided to collect a little more data by including programs back to 2010, giving a five-year data set. Thankfully the program back to 2010 remains in mostly ... [Read more...]

It's somehow amazing to me that the option for slanted or rotated axes labels is not an option within the basic plot() or axis() functions in R.  The advantage is mainly in saving plot area space when long labels are needed (rather than as a means... [Read more...]

In June and July, I receive copies of two books, Social Media Mining with R, by Nathan Danneman and Richard Heimann Bioinformatics with R Cookbook, by Paurush Praveen Sinha For the first one, two recent interesting books deal with the same topic. Reza Zafarani, Mohammad Ali Abbasi and Huan Liu ... [Read more...]

In many cases Word is still the preferred file format for collaboration in the office. Yet, it is often a challenge to work with it, not so much because of the software, but how it is used and abused. Thanks to Markdown it is no longer painful to inclu... [Read more...]

I often see graphs that are poorly implemented in that they do not achieve their goal. One such type of graph that I see are dodged bar charts. Here is an example of a dodged bar chart summarizing the number of all star players by team (focusing spec... [Read more...]

A new release of our BH package providing Boost headers for use by R is now on the CRAN mirrors. This release is the third based on Boost 1.54.0. At the request of the maintainer of the recent added RcppMLPACK package, it adds the Boost.Heap l... [Read more...]

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 ... [Read more...]

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... [Read more...]

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 ... [Read more...]

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 ... [Read more...]

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 ... [Read more...]

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 ... [Read more...]

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. ... [Read more...]

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 → [Read more...]

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 ... [Read more...]

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

pipeR 0.4 is released! Check it out at the project page. In this new version, two things happen. First, %____% handles everything. Second, the introduction of Pipe object. %____% In version 0.4, I decide to merge the functionality of all three operators in the previous versions. Only %____% operator remains, and the two other operators ... [Read more...]