R-bloggers

I tend to write a lot of functions that create specific graphics implemented with ggplot2. Although I try to pick graphic parameters (e.g. colors, text size, etc.) that are reasonable, I will typically define all relevant aesthetics as param... [Read more...]

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Snow in Inwood, New York. Photograph by the author. Recently I’ve been looking at hourly ridership data from the New York City Subway. Last time we learned that people go to work in the morning and come home in the eve... [Read more...]

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Frank Harrell’s Regression Modeling Strategies online seminar will take place May 14, 15, 18, and 19. This workshop covers principled strategies for building, validating, and interpreting multivariable regression models for a wide range of outcomes, with emphasis on predictive accuracy, avoiding overfitting, and interpreting estimated effects. It explores spline methods, data reduction, benefits ... [Read more...]

Join our workshop on Reactive Shiny Apps and Deployment with Google Cloud Run: Intermediate R Shiny Workshop,  which is a part of our workshops for Ukraine series!  Here’s some more info:  Title: Reactive Shiny Apps and Deployment with Google Cloud Run: Intermediate R Shiny Workshop  Date: Thursday, May 21st, 18:00 – 20:00 ... [Read more...]

The Missing Standard CDISC released the Population Pharmacokinetic (PopPK) Implementation Guide in 2023, giving the clinical programming community a clear structural blueprint for PK analysis datasets. But Exposure-Response (ER) modeling — wh... [Read more...]

Dear rOpenSci friends, it’s time for our monthly news roundup! You can read this post on our blog. Now let’s dive into the activity at and around rOpenSci! Tomáš Kalibera (1978–2026) The rOpenSci team is deeply saddened at the los... [Read more...]

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Hello, I’d like to share CougarStats, a free and open-source R Shiny web app I developed to support the teaching and learning of Statistics. CougarStats runs entirely in a browser and is designed for accessibility and ease of use. You can explore the app here: https://www.cougarstats.ca/    ... [Read more...]

Introduction Universities are increasingly using collaborative learning pedagogies, which can benefit learners through deeper understanding of course content and teamwork skills. However, the realisation of these sought-after benefits depend on how educators assign learners to groups. Educators have formulated various mathematical models to perform this assignment. Some have developed developed ... [Read more...]

Understanding R’s describe() Function: A Complete Guide to Summary Statistics Table of Contents Introduction to describe() Breaking Down the Output Columns Key Statistics and Their Interpretation Practical Examples When to Use Which Statistic Extending the Functionality Conclusion Introduction to describe() The describe() function from R’s psych package (Revelle, 2023) ... [Read more...]

The Data Analyst’s Guide to  Statistical Coefficients Table of Contents What Are Coefficients? Regression Coefficient Coefficient of Determination (R²) Coefficient of Variation (CV) Correlation Coefficient Other Common Coefficients Implementation in R Key Takeaways What Are Coefficients? In statistics and data analysis, coefficients are numerical measures that quantify relationships between ... [Read more...]

Summer School in Science Mapping (SSSM) 2025 – I International Edition Title: Producing Systematic Literature Reviews with Bibliometrix R and Biblioshiny Date & Location: June 9-13, 2025 – Naples, ITA We are pleased to announce the upcoming Summer School in Science Mapping (SSSM) 2025 – I International Edition, an intensive training program focused on conducting … Continue reading ... [Read more...]

For anyone interested, “Programming in R” (title translated) is a free book on R programming written in Greek. It presents a programmer’s point of view of R, for beginners (in fact for people with absolutely no programming experience) to advanced programmers.  Thus, the book does not delve deeply on ... [Read more...]

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On May 11th 2026, Professor Frank Harrell with lead a workshop, Introduction to R, Regression, and the rms Package, covering foundational R and RStudio skills, linear and multiple regression concepts, and an introduction to the rms package for model fitting and diagnostics. It also introduces a reproducible workflow using Quarto, with ... [Read more...]