A bit late but here are my slides on Future: Friendly Parallel Processing in R for Everyone that I presented at the satRday LA 2019 conference in Los Angeles, CA, USA on April 6, 2019. My talk (33 slides; ~45 minutes): Title: : Friendly Parallel...

In our last post, we defined the goal of an investment strategy, showed how comparing strategies may not be as straightforward as one would imagine, and outlined some critical questions that need to be answered when weighing competing strategies. In...

In our last post, we defined the goal of an investment strategy, showed how comparing strategies may not be as straightforward as one would imagine, and outlined some critical questions that need to be answered when weighing competing strategies. In this post, we’ll look at what an investment strategy’...

Background One of the pet projects that I had been working on earlier in the year was to figure out an efficient way to gain an insight into what is going on in a consumer market, e.g.: What do people look for when they’re buying a product? What ...

Phillip (Armand) Bester is a medical scientist, researcher, and lecturer at the Division of Virology, University of the Free State, and National Health Laboratory Service (NHLS), Bloemfontein, South Africa Andrie de Vries is the author of “R for Dummies” and a Solutions Engineer at RStudio Recap In part 2 of this ...

As announced in our recent post about updates to our Software Peer Review system, all our package development, review and maintenance is available as an online book. Our goal is to update it approximately quarterly so it’s already time to present its second official version! You can read the ...

Personalized treatment effects can be estimated easily with model-based trees and model-based random forests using the R package model4you. Citation Heidi Seibold, Achim Zeileis, Torsten Hothorn (2019). “model4you: An R Packa...

Today I am happy to announce that a new free course on Choroplethr – Mapping Census Bureau Data in R with Choroplethr – is available on Census Academy, the US Census Bureau’s new training platform! (Choroplethr is a suite of R packages I created for mapping demographic statistics).This course is ...

In this note we share a quick study timing how long it takes to perform some simple data manipulation tasks with R data.frames. We are interested in the time needed to select a column, alter a column, or select a row. Knowing what is fast and what is slow ...

Once you've figured out how to create the standard scatter plots, bar charts, and line graphs in ggplot, the next step to really elevate your graphs is to master working with color. Strategic use of color can really help your graphs to stand out and make an impact. In this ...

Having discovered codegolf on Stack Exchange a few weeks ago, I spotted a few interesting puzzles since then but only got the opportunity at a try over a quiet and rainy weekend (and Robin being on vacation)! The challenge was to write an R code for deciding whether or not ...