What?  Where?  When? These are key questions that every scientist or other collector of environmental data must answer. What is the value of the thing we are measuring? Where are we taking the measurement? When are we taking…Read more of Standard Latitudes and Longitudes →

We’ve released the newest version of NIMBLE on CRAN and on our website. NIMBLE is a system for building and sharing analysis methods for statistical models, especially for hierarchical models and computationally-intensive methods (such as MCMC and SMC). Version 0.10.0 provides new features, improvements in speed of building models and ...

tl;dr As of late 2020 there are many dashboarding/reporting/BI tools out there, with the most popular ones being Tableau, PowerBI, and R Shiny. The question quickly becomes – “How can I determine the right tool for my particular needs?” Today we’ll compare two of the most widely used ...

Spatial Data Analysis Using Artificial Neural Networks, Part 2 Richard E. Plant Additional topic to accompany Spatial Data Analysis in Ecology and Agriculture using R, Second Edition http://psfaculty.plantsciences.ucdavis.edu/plant/sda2.htm Chapter and section references are contained in that text, which is referred to as SDA2. Data ...

Due to the current sanitary situation, the Grenoble (France) R user group has decided to switch 100% online. The advantage to this is that our talks will now open for anybody around the globe ???? The next talk will be on October 22nd, 2020 at 5PM (FR): Organising exams in R Package {exams} ...

This article is part of a R-Tips Weekly, a weekly video tutorial that shows you step-by-step how to do common R coding tasks. Let’s learn how to make Excel pivot tables with R. Get the Code: GitHub Link Video Tutorial: YouTube Tutorial ...

This post is part of a series on new features in RStudio 1.4, currently available as a preview release. What’s a Command Palette? Just as a paint palette gives the artist instant access to all their colors, a command palette is a software afforda...

This is the latest in my series of screencasts demonstrating how to use the tidymodels packages, from starting out with first modeling steps to tuning more complex models. Today’s screencast uses a smaller dataset but lets us try out some impor...

While reading up on modern soccer analytics (I’ve had an itch for soccer and tracking data recently, I stumbled upon an excellent set of tutorials written by Devin Pleuler. In particular, his notebook on non-negative matrix factorization (NNMF)...

Don’t we all miss 2019 (blame Covid for the long delay in this post). The days of going to work and seeing your work colleagues face to face - and for some of you, attending one of our on-site tra...

Probably the most popular models in modern investment management are factor models. Growing out of the Capital Asset Pricing Model (CAPM), factor models were first theorized in Arbitrage Portfolio Theory and the concept was expanded and applied to risk premiums by Nobel-laureate Eugene Fama and Kenneth French (French, surprisingly, did ...

The CDC continues to “deliver” in 2020, this time by changing the JSON response of one of the hidden APIs that my {cdcfluview} package wraps. CDC: So helpful! It was a quick fix, and version 0.9.2 passed automated CRAN checks in ~9.42 minutes! ???? the CRAN team! Plus, a special shout-out to Ian-McGovern (GH ...

This note is a little break from our model homotopy series. I have a neat example where one combines two classifiers to get a better classifier using a method I am calling “ROC surgery.” In ROC surgery we look at multiple ROC plots and decide we want to cut out […]

Don’t we all miss 2019 (blame Covid for the long delay in this post). The days of going to work and seeing your work colleagues face to face - and for some of you, attending one of our on-site training courses! 2019 was a great year for us. Not only have ...