Tom Mock

@themockup.blog

Product Manager @posit.co👨‍💻 I ❤️ 🌮, dogs, and data science IDEs Productive with open source #RStats and #PyData @thomas_mock@fosstodon.org + @thomas_mock He/Him | San Antonio, TX TheMockup.blog

The Positron Notebook Editor is out of beta and ready for all your notebook workflows! I am super proud of the work the team did to build this notebook experience from scratch. Something we decided was necessary to have a fantastic notebook experience for data science.

The latest release of #Positron went out last week, and I am so pleased to share what's in it! 🥳 Some big features we've been working on for a while (the editor for `.ipynb` notebooks, the Packages pane, Posit Assistant) all came out of preview this month: opensource.posit.co/blog/2026-07...

Positron July Release Highlights

Highlights from the 2026.07 release of Positron, including the new Notebook editor, Packages pane, and Posit Assistant all reaching general availability.

opensource.posit.co

This is a fabulous chance to learn from @ivelasq3.bsky.social (and I'd jump at any chance you get to do so!!) If you're an R-Studio #rstats user who'd like a friendly intro to Positron in a relaxed, questions-welcome atmosphere, we got you.

R-Ladies Melbourne@rladiesmelb.bsky.social · 4w ago

📢 𝗠𝗲𝗲𝘁 𝗣𝗼𝘀𝗶𝘁𝗿𝗼𝗻: 𝗔 𝗚𝘂𝗶𝗱𝗲𝗱 𝗧𝗼𝘂𝗿 𝗳𝗼𝗿 𝗥𝗦𝘁𝘂𝗱𝗶𝗼 𝗨𝘀𝗲𝗿𝘀 📅 𝗗𝗮𝘁𝗲: 30th July, 2026 ⏰ 𝗧𝗶𝗺𝗲: 11 AM 📍 𝗪𝗵𝗲𝗿𝗲: Online - www.meetup.com/rladies-melb...
 Join @libbyheeren.bsky.social and Isabella Velásquez to explore the next generation of data science development in a relaxed, beginner-friendly environment!

A full-day Python workshop at posit::conf(2026) on September 14: Polars, Plotnine, Great Tables, and Scikit-Learn, built around a single case study and taught in Positron. Several workshops are filling. Houston, September 14–16. posit.co/conference

Bild

Latest version of Positron can open xlsx files in the data viewer(!) and it has a dropdown menu now for previewing different formats of #QuartoPub documents And—most importantly, but also from a few weeks ago, so less new—the plots panel can pick up dimensions from chunk options!!!! #rstats

An excel file of R's penguins data loaded into the data viewer in PositronA "Preview Format…" dropdown menuA screenshot of an image set to be 5x3 in the Quarto chunk options, automatically displaying as 5x3 in the plot panel

Read this incredibly useful post by Community Engineer Steffi LaZerte if you write prose in Quarto or R Markdown! I begged her to write it so I could duplicate her spellcheck, formatting and grammar linting config. (Also, note that we reset the @ropensci.org account, give it a re-follow!) #RStats

rOpenSci@ropensci.org · last mo.

[blog] FOSS Tools for Lazy Editors ✍️ Steffi LaZerte shares her editorial workflow for the rOpenSci blog, built on FOSS tools configured as extensions in Positron 🛠️ ropensci.org/blog/2026/07... #RStats

Announcing Toolbars for Shiny! Managing limited screen real estate for filters, controls, or AI components is a challenge. Toolbars addresses this by with a compact, low-profile UI container for headers, footers, and text inputs. See #RStats & #Python examples: opensource.posit.co/blog/2026-05...

Introducing Toolbars: Supercharge your Cards and Inputs

New compact components in bslib and py-shiny for fitting buttons, selects, and other inputs into tight spaces.

opensource.posit.co

When we started working on Positron, we began by asking "what did we always want to do in RStudio, but couldn't"? Years of community upvotes on RStudio's issue tracker helped us form that wishlist. Here's how some big ideas made their way to Positron: opensource.posit.co/blog/2026-06...

RStudio's Top Feature Requests ... In Positron

Many of the most upvoted RStudio feature requests are already implemented in Positron, and we explore ten of them.

opensource.posit.co

The user interface in the new Posit Assistant is one of the best and most intuitive I've seen for using AI tools for editing code. This will be excellent for students and researchers already familiar with RStudio. This is a brilliant harness and user experience for using AI for data science 🎉

Bild

I've just tried Posit Assistant on the free plan and must say, I'm impressed. Using the super-cheap Gemma 4 26B model (10% cost of Sonnet) on free plan it worked instantly. Hats of to the #posit team for integrating this into RStudio and allowing people to test with free plan!

Bild