This week we are launching four new courses as part of our Introduction to Statistics curriculum. We are taking a modern approach to teaching statistics with the use of simulations and randomization rather than a more traditional theoretical one. We ha... [Read more...]

Sometimes it is helpful to simulate gene expression data to test code or to see how your results look with simulated values from a particular probability distribution. Here I am going to show you how to simulate RNAseq expression data counts from a uniform distribution with a mininum = 0 and maximum = 1200. [Read more...]

The Windows edition of the Data Science Virtual Machine (DSVM) was recently updated on the Azure Marketplace. This update upgrades some existing components and adds some new ones as well. You now have your choice of integrated development environment to use with R. RStudio Desktop is now included in the ... [Read more...]

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The R code that accompanies this post is found on GitHub: you will find R, Rmd, and HTML files there that were used during the first Open Data R Meetup held in Belgrade, 31 January 2017, organized by Data Science Serbia in Startit Center, Savska 5, Bel... [Read more...]

BMC Bioinformatics has published a paper by colleagues of mine, about calculating exact p-values for pairwise comparison of Friedman rank sums. The paper provides fast and easy-to-use R code, making it an interesting read for ... [Read more...]

After months and months of working trying to get R on 64 bit Windows to work with link-time-optimization (LTO), I’ve come to the conclusion that GCC 4.9.3’s implementation of LTO just isn’t polished enough to work across the entire R infrastructure. I have been able to get base R, ... [Read more...]

After months and months of working trying to get R on 64 bit Windows to work with link-time-optimization (LTO), I’ve come to the conclusion that GCC 4.9.3’s implementation of LTO just isn’t polished enough to work across the entire R infrastructure. I have been able to get base R, ... [Read more...]

The last few posts at Sharp Sight have been fairly intense. Let’s make a quick map ... The post Mapping unemployment data, 2016 appeared first on SHARP SIGHT LABS. [Read more...]

An update to the gunsales package is now on the CRAN network. As in the last update, some changes are mostly internal. We removed the need to import two extra packages with were used in one line each -- easy enough to be replaced with base R. We also... [Read more...]

Summary In this blog post I will show you how to make your own personal assistant (think Siri, Cortana, Alexa) in R, very quickly. This will be done in three steps: Get R to recognise your voice and convert it to text Set u... [Read more...]

For 8 years now, we've maintained a list of local R user groups here at the Revolutions blog. This is a list that began with a single group (the Bay Area RUG, the first and still one of the largest groups), and now includes 360 user groups worldwide (including 27 specifically for women). ... [Read more...]

R has become an essential tool in oceanography and marine ecology. For instance, R is specifically used to read, process and represent in situ oceanographic data and to manage satellite data in order to produce high temporal and spatial resolution maps useful to synoptically explore and monitoring vast areas of ... [Read more...]

An introduction to package exams - Part of my job as a researcher and teacher is to periodically apply and grade exams in my classroom. Being constantly in the shoes of an examiner, you soon quickly realize that students are cleve... [Read more...]

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Regression is a very popular statistical technique. In this post, I’ll show you how to plot regression effects using the R ‘effects’ library (https://cran.r-project.org/web/packages/effects/effects.pdf). This library provides a set of easy-to-write commands to visualize the effects of each variable in… Continue ... [Read more...]

In my last post, I built a shiny app to explore World Gender Statistics. To make it a bit nicer and more convenient, I added a few more features: The drop-down menu for Years is now reactive, i.e. it only shows options with data (all NA years are ... [Read more...]

A draft of my book Empirical Software Engineering using R is now available for download. The book essentially comes in two parts: statistical techniques that are useful for analyzing software engineering data. This draft release contains most of the techniques I plan to cover. I am interested in hearing about ... [Read more...]

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