My tip is to give generously, without expectation. There cannot be a social network if everyone is coming to extract attention without putting as much in it. So share cool stuff, repost, comment, like, all in the merriest way. 🎄

Reminder that similar mistakes can easily arise in Python.

Some thoughts on what can help make a (reasonably) happy retirement, a year and a half into this new stage of my life. nextchapter.machlis.com/posts/2025-1... #Retirement #NextChapter

In this edition of the @posit.co AI Newsletter, some 🎄Year In Review🎄, notes on GPT 5.2, and an experimental AI product for RStudio users. posit.co/blog/2025-12...

I see a lot of complaints about untested AI slop in pull requests. Submitting those is a dereliction of duty as a software engineer: Your job is to deliver code you have proven to work simonwillison.net/2025/Dec/18/...

Fantastic! $650k awarded via the Research Software Maintenance Fund for “Enabling the Next Generation of Contributors to R”—mentoring new contributors, modernizing R’s dev infrastructure, and strengthening the R Foundation. r-consortium.org/posts/650K-f... #rstats

GPT 5.2 is now included in our R code generation eval! The -Pro version is slightly SoTA at a substantially higher price point than similar performers. Read more: skaltman-model-eval-app.share.connect.posit.cloud

🎉 Big news for the future of #RStats. The project "Enabling the next generation of R contributors" has received £500k over 2 years. - mentoring expert contributors - modernising infrastructure - improving governance - strengthen communication and outreach www.software.ac.uk/rsmf-round-1...

Are you interested in adding alt text to your publications? It helps share your data visualisations with vision impaired readers. Try out github.com/numbats/auto... to get a reasonable first draft or maybe complete text. @r-forwards.hachyderm.io.ap.brid.gy @rladies.org @rconsortium.bsky.social

Back in the top 10, baby! Eat your heart out, "#rstats is dying" thinkpieces. 😜 www.tiobe.com/tiobe-index/

I’m teaching a course on data wrangling with R & the tidyverse for @stathorizons.bsky.social in January. Filled to the brim with ways to do the stuff you have to do before you can run any of your spiffy models and that often breezily gets glossed over even though it’ll take up 90% of your time.

A worthy mantra from Andrew: "[I] cannot LLM [my] way into domain knowledge, data analysis expertise, or coding ability."

Today is the last day to submit proposals to speak at the rainbowR conference 🌈 Deadline is midnight, Anywhere on Earth time. #RStats #QueerData

How do large language models interpret words relating to probability like “unlikely,” “probably,” or “almost certain"? The below shows what happens when we compare judgements from different models to a benchmark dataset of human judgments (data from: github.com/zonination/p...).

A new release of odbc, a package that allows for connecting to various databases, is on #rstats CRAN! Just a few bug fixes in this release. github.com/r-dbi/odbc/r...

We're getting a native R %notin%!! "after many years of private definitions mostly hidden in packages" 😂😂 #rstats #databs

Huge thanks to @posit.co and hosts @mchow.com and @wesmckinney.com for having me on The Test Set!!! posit.co/thetestset/e... My favorite part was learning that I've been pronouncing "pandas" correctly all along. I've never felt more vindicated. And y'all are wrong about candy corn. 😜

Hey data science junkies! 🚀 We just dropped The Test Set podcast on YouTube. It’s been a blast having conversations with the folks behind your favorite #RStats and #Python tools. And, we have a stacked lineup of guests coming up next year! Learn what we're cooking here! posit.co/blog/the-tes...

I put together two roundups from posit::conf(2025): • Shiny talks + full workshop materials shiny.posit.co/blog/posts/c... • Quarto talks playlist and summaries quarto.org/docs/blog/po...

It's Spotify Wrapped season🎁 Continuing the tradition of analyzing my music listening data with #rstats tidyverse, this time with Databot: www.simonpcouch.com/blog/2025-12...

Ever since we started making documents in Quarto and Typst, I've wanted to make EVERYTHING in Quarto and Typst. Curious to learn how make documents like these? Boy, do I have the blog post for you! #rstats rfortherestofus.com/2025/11/quar...

A new release of vitals, a package for LLM evaluation in #rstats, is now on CRAN!🎄 This release includes all sorts of quality-of-life improvements; image support, precise latency measurement, better error messages, and more comprehensive logging. github.com/tidyverse/vi...

Merry December folks! Wanna know your most used and co-dependent geoms this past year?! I've built "Spotify Wrapped" for {ggplot2} that produces you an interactive story and analytical tools for your geom usage! #rstats Build your own report by following the docs: gpcds.com/ggplot2wrapp...

🎄 ANNOUNCEMENT: R Package Development Advent Calendar 2025! 🎄 Starting December 1st, I'm launching a 25-day journey through modern R package development. here's why you should follow along 🧵 #rstats #RPackageAdvent2025 #OpenSource

I am tremendously grateful for open source, as it’s had such a huge impact on my career. That’s one of the reasons I’m so happy that Posit has committed to the @opensourcepledge.com. Read about our contributions to non Posit projects at posit.co/blog/posit-o....

nlmixr2 is becoming an R Consortium Working Group! Open-source NLME modeling in R that can compete with commercial pharmacometric tools and support regulatory submissions. More: r-consortium.org/posts/nlmixr... #RStats #pharma

I don't know how I've missed it because it's *right on the documentation home page*, but if you use {glue} for nice string interpolation in #rstats and you have {stringr} loaded (likely through the tidyverse), you can use str_glue() instead of glue::glue() or loading library(glue) glue.tidyverse.org

#rstats Please welcome Jarl, a new R linter. Jarl is a CLI tool with extensions in VS Code, Positron, and Zed. It can check thousands of lines of R code in milliseconds. Jarl provides several output formats, a Github Actions workflow, and more. Blog post: www.etiennebacher.com/posts/2025-1...

We are absolutely thrilled to welcome Hadley Wickham @hadley.nz as a keynote speaker for the rainbowR conference! To find out more about the conference, including how to submit a proposal, and to sign-up for updates, see conference.rainbowr.org

I'm honoured and delighted to be delivering the keynote for Japan.R 2025 in Tokyo on Dec 6. New ideas on creativity and community in open source software. Live demonstrations of ggbot2, OpenTelemetry and mirai (Posit ecosystem-wide initiatives). #Rstats #Tidyverse japanr.connpass.com/event/374714/

Last week I posted about using structured output in {ellmer} to turn text into data, but a friend pointed out that the LLM had mixed up the words "conscious" and "consciousness" in its summary. So how can we fix that? 🧵(1/3) #rstats #llms #ai

ellmer 0.4.0 is out now! New features include Claude caching & file uploads, support for newer OpenAI responses API, web search tools, and better security. Read more at tidyverse.org/blog/2025/11... #rstats

Are there any #rstats tools to make it easier to format names into a dataset into parts of a string for a model formula? I often do things like this and copy to my script: > names(iris)[1:4] |> paste(collapse = " + ") [1] "Sepal.Length + Sepal.Width + Petal.Length + Petal.Width"

My R+AI Conf talk is now available on YouTube: youtu.be/828KuEORQdg?... I talked about my R package {brandthis} that helps you getting started with theming your quarto outputs and shiny apps by quickly generating brand.yml files and color palettes for R and Python plots #RStats

To be effective, data science agents need to be able to read plots reliably. @sara-altman.bsky.social and I wrote about some concerning findings on LLMs' ability to interpret plots when the content contradicts their expectations on the @posit.co blog. posit.co/blog/introdu...

testthat 3.3.0 out now! This is a massive release with tons of improvements including better failure messages, new expectations, improved snapshotting, new vignettes, and much much more: tidyverse.org/blog/2025/11... Post includes some thoughts on developing an #rstats package with Claude Code.

This gives a fantastic framing of how to think about reproducibility (it's a spectrum) and how to use renv with intention. Highly recommend, even if you're not using renv, to get a better understanding of how to live in peace as R and package versions advance 🕊️ #rstats

We're hiring an open-source #python developer focused on modeling APIs! tidyverse.org/blog/2025/11... #numpy #scipy #scikitlearn

My keynote about data science tools at posit::conf is now online! I originally meant it to be a talk about Positron, but as I was writing it, it took a left turn through the history of RStudio and into the philosophy of tool design & how to build stuff for people. www.youtube.com/watch?v=tGre...

We are looking for #rstats community feedback on 3 new dplyr functions! We're aiming to expand the `filter()` family: - `filter()` to keep rows - `filter_out()` to drop rows - `when_any()` and `when_all()` as modifiers Read more and leave feedback here: github.com/tidyverse/ti...

Y’all these genzplyr PRs are off the hook: github.com/hadley/genzp...

filter_out() = yeet()

Do you teach #rstats? Do your students complain about how lame and old-fashioned dplyr is? Don't worry: I have the solution for you: github.com/hadley/genzp.... genzplyr is dplyr, but bussin fr fr no cap.

Based on the frequency of me typing it, I'm thinking about creating a new testhat package, presumably for testing hats.

pkgdown 2.2.0 now out — tidyverse.org/blog/2025/11.... Main feature is new build_llm_docs() which makes your websites easier to understand by LLMs. (Which you can easily turn off if desired) #rstats

I'm excited to share side::kick(), an experimental open-source coding agent for RStudio built entirely in R. It can interact with your files, communicate with your active #rstats session, and run code. Check it out: github.com/simonpcouch/...

And stringr 1.6.0 is out too: tidyverse.org/blog/2025/11.... A fairly small release but some handy improvements thanks to tidyverse dev day contributors! #rstats

Purrr is great and while I can still struggle with remembering the exact behavior of map functions, {purrr} is definitely becoming a staple for my own coding