This was a deck used in my presentation to the Inland Northwest R user Group this past Friday (August 14, 2015). It relies on the work done by many folks, including Ari Lamstein, Kyle Walker, Erik Erhardt, and the kind folks at R-Studio. Please click o... [Read more...]

In this follow-up tutorial of This R Data Import Tutorial Is Everything You Need-Part One, DataCamp continues with its comprehensive, yet easy tutorial to quickly import data into R, going from simple, flat text files to the more advanced SPSS and SAS files. As a lot of our readers noticed ... [Read more...]

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by Gregory Vandenbrouck Software Engineer, Microsoft This post is the fourth in a series that covers pulling data from Microsoft SQL Server or MySQL/MariaDB on Azure to an R client on Windows or Linux. In the previous posts, we covered pulling data from SQL Server to Windows and from ... [Read more...]

Here is a list of the EARL Competition entries we have received so far: Entry details here “R is the clear choice for quickly prototyping advanced data manipulation and creating analytics dashboards, essential for a fast, informed response to emerging … Continue reading → [Read more...]

Two weeks ago I discussed various linear and generalised linear models in R using ice cream sales statistics. The data showed not surprisingly that more ice cream was sold at higher temperatures. icecream [Read more...]

Two weeks ago I discussed various linear and generalised linear models in R using ice cream sales statistics. The data showed not surprisingly that more ice cream was sold at higher temperatures.

icecream   temp=c(11.9, 14.2, 15.2, 16.4, 17.2, 18.1, <br>         18.5, 19.4, 22.1, 22.6, 23.4, 25.1),<br>  units=c(185L, 215L, 332L, 325L, 408L, 421L, <br>          406L, 412L, 522L, 445L, 544L, 614L)<br>)

I used a linear model, a log-transformed linear model, a Poisson and Binomial generalised linear model to ... [Read more...]

A new Armadillo release 5.400.2 was just released by Conrad. Consequently, a new RcppArmadillo release 0.5.400.2.0 went out to CRAN and into Debian. Armadillo is a powerful and expressive C++ template library for linear algebra aiming towards a good balance between speed and ease of use with a syntax deliberately close to ... [Read more...]

For the past four months, I’ve been on the job market looking for work as an applied statistician or data scientist within the the online marketing industry. One thing I’ve come to expect with almost every company is some sort of homework assignment or challenge where a spreadsheet ... [Read more...]

Logistic regression is a technique that is well suited for examining the relationship between a categorical response variable and one or more categorical or continuous predictor variables. The model is generally presented in the following format, where β refers to the parameters and x represents the independent variables. log(odds)=β0+β1∗x1+...+β... [Read more...]

This is a continuation of my previous article, where I gave a basic overview of how to construct heatmaps in R. Here, I will show you how to use R packages to build a heatmap on top of the map of Chicago to see which areas have the most amount ... [Read more...]

One-Sample T-Tests To conduct a one-sample t-test in R, we use the syntax t.test(y, mu = 0) where x is the name of our variable of interest and mu is set equal to the mean specified by the null hypothesis. So, for example, if we wanted to test whether the ... [Read more...]

Bar charts are a pretty common way to represent data visually, but constructing them isn’t always the most intuitive thing in the world. One way that we can construct these graphs is using R’s default packages. Barplots using base R Let’s start by viewing our dataframe: here ... [Read more...]

by Carl Nan, DeployR PM A new version of DeployR, the server-based framework that provides simple and secure R integration for application developers, is now available. (If you're new to DeployR, take a look at the DeployR Overview or download the white paper, Using DeployR to Solve the R Integration ... [Read more...]

Competition Time! Mango Solutions are offering an opportunity to win a FREE two day Conference Pass* to the EARL (Effective Application of the R Language) Conference in London on the 14th-16th September.   *Value £545 To Enter: Email [email protected] with … Continue reading → [Read more...]

Markov Chain Monte Carlo simulation sounds, admittedly, like a method better left to professional practitioners and the like; but please don’t let the esoteric name fool you. MCMC, as we like to call is, is a powerful yet deceptively simple technique that can be useful in problems ranging throughout ... [Read more...]

In this post, I want to share some examples of data visualization I was playing with recently. Like in many other occasions, my field of application is digital analytics data. Precisely, data from... [Read more...]

In this post, I want to share some examples of data visualization I was playing with recently. Like in many other occasions, my field of application is digital analytics data. Precisely, data from Google Analytics.You might remember a previous post whe... [Read more...]

by Richard Kittler, Revolution R Enterprise PM, Microsoft Advanced Analytics In its latest release Revolution has added to the platform support of Revolution R Enterprise (RRE) version 7.4. Released August 14, version 7.4.1 extends RRE 7.4 capabilities to the Teradata database, HPC Server cluster, and Windows 10 platforms. With RRE for Teradata customers enjoy the ... [Read more...]

It’s only been a month since the last RSiteCatalyst update, and this update is also a pretty minor update in terms of functionality. Set Your Own Endpoint For the overseas users (or companies with weird setups), you can now use the endpoint argument in the SCAuth() function to specify ... [Read more...]