When changing outputs, I consider how people use the results. If outputs are intermediates used with your other (updated) functions, most user code may not even break. I went through this with fable's forecast output, most users used autoplot() or hilo() with the output, so very little code broke.
There's still time for a last-minute registration for WOMBAT, happening next week!
I'm very excited for lots of #DataViz and #RStats talks, alongside lots of other great sessions 📊 (and meeting more internet friends IRL or course!)
LLMs have been the most disruptive change in my +10 years of teaching data skills - for better and for worse.
Students use LLMs to ask questions, debug code, and sometimes do entire assignments. They're great, but too often are abused to shortcut real learning.
How are they used in your classes?
I'll still be teaching classes in RStudio for now, and probably for at least a year longer. While I strongly prefer using the code editor and personally have trouble with inline outputs, I do hope that they add them to (at least) the visual editor. I find my students like inline outputs too 😊
Luis D. Verde Arregoitia presenting the hex session package at use R 2025. The slide features the technology of quarto, css, and js. Along with the hex sticker for the package.
⚡ Today's 5-minute lightning talks at #useR2025 solved a problem I've had for 7 years!
I created {hexwall} for the useR! 2018 feature wall of hex-stickers. @liomys.mx's {hexsession} package is everything I wanted for hexwall - hexagons arranged in HTML, CSS, and JS 🤩
👉 github.com/luisdva/hexs...
From >10 years of RStudio for R, and the occasional vscode or basic text editor for other languages that RStudio was too frustrating to work with.
Have you tried it? I'm also mostly desktop use with some cloud, and I've found both experiences to be better in Positron so far.
Yes! I know some people love the git pane in RStudio, but I sure don't. I'm using Sublime Merge at the moment, but I'll be trying out the built-in git client 😊
My day 1 #useR2025 highlight was the Positron class, I’m officially a convert now. 🤓
Why?
🐇 Positron is fast!
⌨️ RStudio keybindings
🎨 Command palette (Ctrl+Shift+P) to find any IDE feature
🏡 Remote-SSH runs code on my home server, anywhere!
🤖 The Positron Assistant integration is seamless
#rstats
Me standing in front of the use R 2025 hexagon sticker map of North Carolina.
Day 1 at #useR2025 was a blast! It's awesome meeting new #rstats users and catching up with familiar faces.
I was amazed to see the hex-sticker map of North Carolina, made with code I wrote for useR! 2018 in Australia. See how maps like this are made in R here: mitchelloharawild.com/blog/user-20...
🎉 WOMBAT is a fantastic event and I'm proud to be co-organising it this year. It's a great opportunity for us to share the latest open-source software and techniques among data analysts from academic, industry, and government.
The shiny app is run on my own server using the rocker/shiny docker image.
It's also of course open-source, see how it was made here: github.com/mitchellohar...
Many thanks to Sam Parmar (github.com/parmsam) for making a similar app for posit::conf(2025) that I could adapt and extend for JSM2025.
It's my first time experimenting with RAGs for LLMs, and it was surprisingly easy to do in #rstats with ragnar, ellmer, and shinychat 🤩
A screenshot of my JSM 2025 Agenda Chat bot, featuring the answer to "when is Mitchell O'Hara-Wild presenting".
There's so many parallel sessions at #JSM2025 that it's hard to choose where to go, so I web-scraped the schedule and made a chatbot to help.
I've made it public, so hopefully it can help you too - try it out 👉 shiny.mitchelloharawild.com/jsm2025/
Photo of Mitchell O'Hara-Wild with JSM 2025 EXPO signage.
I'm at #JSM2025 for the first time 🎉
If you're in Nashville too, come say hi! 👋
First impressions - JSM is MASSIVE, and Nashville is loud and proud with their music 🎸🎶
