There’s no end of interesting data analyses that can be performed with Stack Overflow and the Stack Exchange network of Q&A sites. Earlier this week I posted a Shiny app that visualizes the personalized prediction data from their machine learning system, Providence. I’ve also looked at whether ... [Read more...]

I wanted to call your attention to what promises to be an outstanding tutorial on High-Performance Computing (HPC) in R, presented in Web streaming format. My Rth package coauthor Drew Schmidt, who is also one of the authors of the pbdR package, will be one of the presenters.  Should very ... [Read more...]

Test your skills with this R-powered R assessment of base R knowledge! Built using the R powered adaptive testing platform Concerto, this assessment provides a short but powerful tool at evaluating your base R understanding relative to that of your pe... [Read more...]

by Siddarth Ramesh R Programmer, Revolution Analytics A couple of months ago, I worked on a customer engagement involving Shiny. Shiny is a package created by RStudio that is intended to make plots dynamic and interactive. One advantage of Shiny is that an app would completely be written in R, ... [Read more...]

This data.table R tutorial explains the basics of the DT[i, j, by] command which is core to the data.table package. If you want to learn more on the data.table package, DataCamp provides an interactive R course on the data.table package. The course has more than 35 ... [Read more...]

Joanna Zhao’s and Jenny Bryan’s R graph catalog is meant to be a complement to the physical book, Creating More Effective Graphs, but it’s a really nice gallery in its own right. The catalog shows a series of different data visualizations, all made with R and ggplot2. ... [Read more...]

Topic: Text Analytics: Natural Language into Big Data Speaker: Dr. Leif Hanlen, Technology Director at NICTA Date: Tuesday 17 February Time: 5.30pm for a 6pm start Cost: Nil Where: SAS Offices, 12 Moore Street, Canberra, ACT 2600 Registration URL: http://www.iapa.org.au/Event/TextAnalyticsNaturalLanguageIntoBigData … Continue reading → [Read more...]

If you're running Solaris (yes, all zero of you) you'll have to wait for version 0.9.10-1, due to a small issue preventing the Solaris package from building on CRAN. The rest of you can pick up the updated version on CRAN today.See below the fold for c... [Read more...]

The registration for the third conference on R in Insurance on Monday 29 June 2015 at the University of Amsterdam has opened. This one-day conference will focus again on applications in insurance and actuarial science that use R, the lingua franca for ... [Read more...]

Reactive dependencies are dynamic Reactives: order of execution Use of isolate to prevent accidental dependencies Conditional panel reactiveValues One of the things I really like about shiny is that it has excellent documentation: the tutorial, articles and gallery go a long way in helping newcomers as well as intermediate programmers ... [Read more...]

Figure 1: Spearman correlation heat map with correlation coefficient and significance levels based on the mtcars data set.In a recent paper we included data from a survey we conducted. During the publication process, one of the reviewers asked for a more in depth statistical analysis of the data set. He (... [Read more...]

Machine Learning is the field of scientific study that concentrates on induction algorithms and on other algorithms that can be said to “learn.” [1] In order to identify important variables in a multivariate dataset one can utilize machine learning methods. There are many different machine learning algorithms for different tasks. One ... [Read more...]

This slidify-based deck introduces the shiny package from R-Studio and walks one through the development of an interactive application that presents users with options to subset the iris dataset, generate a summary of the resulting dataset, a... [Read more...]

The following image by Mathieu Rajerison has been doing the rounds of French media recently. It shows the streets of Paris, color-coded by their compass direction. It's been featured in an article in Telerama magazine, and even on French TV Channel LCI (skip ahead to 8:20 in the linked video. which ... [Read more...]

For many years as an R user, I didn’t care about environments. To run your statistics, you only very rarely need them. Until you come accross your first environmental concerns… For me, that was in relation with reference classes and R6 objects. Suddenly, everybody was talking about env, and ... [Read more...]

Last week, I published a post titled Lessons learned from teaching an 11-week data science course, detailing my experiences and recommendations from teaching General Assembly's 66-hour introductory data science course. In the comments, I received the ... [Read more...]

In preparation for a R Workgroup meeting, I started thinking about what would be my "Top 5 R Functions". I ruled out the functions for basic mechanics - save, load, mean, etc. - they're obviously critical, but every programming language has them, so th... [Read more...]

If you have used R before, then you surely have come across the three dots, e.g. [crayon-55343e020a0ff482644779/] In technical language, this is called an ellipsis. And it means that the function is designed to take any number of named or unnamed arguments. By the way, the ... [Read more...]

By Richard Pugh – Commercial Director, UK.  Usually when I create slide decks these days I used markdown and slidy.  However, I recently was asked to present using an existing Revolution Microsoft PowerPoint template. Trouble is, I’ve been spoilt with … Continue reading → [Read more...]

The new package RcppStreams arrived on CRAN on Saturday. RcppStreams brings the excellent Streamulus C++ template library for event stream processing to R. Streamulus, written by Irit Katriel, uses very clever template meta-programming (via Boost Fu... [Read more...]