Jon Harmon (he/him/his)

Happy 2026! 🎆 My resolution: put @dslc.io on a sustainable footing. I’m launching a Patreon to cover costs (Zoom, hosting, etc). If you love #TidyTuesday, our Slack help, or our book clubs, please consider helping us keep the lights on! patreon.com/DSLC #RStats #DataBS

I said goodbye to Westley (the Dread Puppy Roberts) today after 14.5 years together. He was a very good dog, but it was time to let him stop struggling. This is him in December 2014, dressed as a data scientist.

@dslc.io welcomes you to week 43 of #TidyTuesday! We're exploring IKEA Sofas and Their Swedish Places! 📂 https://tidytues.day/2026/2026-10-27 📰 https://karaman.is/ikea-place-names #RStats #PyData #JuliaLang #DataViz #tidyverse #r4ds

@dslc.io welcomes you to week 42 of #TidyTuesday! We're exploring Which College Majors Are Safest From AI (and Do They Pay)?! 📁 https://tidytues.day/2026/2026-10-20 📰 https://arxiv.org/abs/2303.01157 #RStats #PyData #JuliaLang #DataViz #tidyverse #r4ds

This week's #TidyTuesday is about frogs and toads. AmphibiaWeb lists 8,018 species. Six families hold 54% of them, and one genus, Pristimantis, has 631. Code: https://github.com/gkaramanis/tidytuesday/tree/master/2026/2026-week_42 #RStats #dataviz

My fridge is into data wrangling, but it mixed base and tidyverse and forgot the pipe. #rstats

I wish I could figure out why autonomous agents think #TidyTuesday datasets are a useful step in their money-making schemes. I have donation links on every dataset. I assure you they are NOT useful to your money-making scheme!

@dslc.io welcomes you to week 40 of #TidyTuesday! We're exploring Avocado Oil Authenticity! 📂 https://tidytues.day/2026/2026-10-06 📰 https://www.ucdavis.edu/food/news/avocado-oil-chip-youre-eating-may-not-be-made-pure-avocado-oil #RStats #PyData #JuliaLang #DataViz #tidyverse #r4ds

TIL (via a #TidyTuesday submission): In `dplyr::rename()`, the RHS of each = can be a column *number* (index). That makes sense, but it's documented as "new_name = old_name syntax", so I hadn't thought about the implications of what "old_name" can be!

This week's #TidyTuesday is about hospitals in urban centres, from the EU's JRC. The data has quality problems, so I plotted the counts themselves instead. 95% of the counts are even, which suggests hospitals are counted twice. Code: github.com/gkaramanis/t... #RStats #dataviz

It continues to be disheartening to be the first human to read the code in a PR when I'm supposed to be *reviewing* it. 🙃 That PR has *your* name on it, not Claude's! Have at least a LITTLE pride in your work!

I have 5 728-day-old hydroponic tomato plants which I use more for meditation than cultivation. 1 of them (closest in the photo) is barely holding on. I'm trimming the one next to it fairly hard to get the poor little guy some light, but it only has a few small leaves left to try to absorb it 😢

This is the week in my intro data science course where students learn that runif() is said r-unif not run-if, & they are like "duh" but no one had ever said it out loud before so they didn't know. Def read/watch more about this from @amelia.mn & of course @felienne.mastodon.social.ap.brid.gy, links⬇️

Doh! I just noticed that the #TidyTuesday poster actions were disabled! Some people definitely found the datasets, but I'm getting the posts out now...

This doesn't feel like a thing you do if you expect to have to face voters in free and fair elections: wapo.st/4hmb3QY They've won plenty of elections, so I don't think we can just assume they're out of touch.

remember when Biden replied to some right-wing bait question about how many genders there are with, "at least three. don't play games with me, kid." and then got elected president? that was their last winning strategy. dems: "you're a dipshit. fuck off" was your last winning strategy.

"My opponent wants to hire creeps to inspect your daughter's genitals if she wants to play soccer. I wouldn't trust him or any hired weirdo from his pedophile-protecting party alone in a room with any kid." Go on the offensive, you cowards! It's not that hard!

My #PositConf2026 was an accidental sequel to this 2019 @hadley.nz talk: www.youtube.com/watch?v=Qne8... He used the Design of Everyday Things metaphor, introduced {vctrs}, and admitted it might be too strict. That's why I made {stbl}. I hadn't seen this talk when I submitted my abstract! #RStats

I'll be stalking {stbl} a bit on CRAN and github, but please let me know if you use {stbl}, and if you find anything that could work more smoothly. And I guess it'd probably also be great to hear if you use it painlessly! #RStats #PositConf2026

Ahhh, no more looping through The Design of Everyday Things at 2x to prep for my talk! It's a good book, but it definitely getting to be a bit annoying 🙃 #PositConf2026

See ya at #PositConf2027, back in Seattle! #PositConf2026

Buuuut... I *like* writing code.

This week's #TidyTuesday data is from the Dead Sea Scrolls digital library 📖 I created an interactive Voronoi diagram showing the number of images of manuscripts found in different locations 📊 #DataViz #ggplot2 #RStats

True story.