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Jon Harmon (he/him/his)

@jonthegeek.com

1k Following6.3k Followers

🗣️#RStats #DataScience #Dogs
@dslc.io Executive Director
#TidyTuesday poster

🔗http://linkedin.com/in/jonthegeek
🔗http://github.com/jonthegeek

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@jonthegeek.comOct 12, 2026, 8:18 PM

Curator: @afrikaniz3d

@jonthegeek.comOct 12, 2026, 8:18 PM

@dslc.io welcomes you to week 41 of #TidyTuesday! We're exploring AmphibiaWeb!

📂 https://tidytues.day/2026/2026-10-13
📰 https://onlinelibrary.wiley.com/doi/10.1002/ece3.73207

#RStats #PyData #JuliaLang #DataViz #tidyverse #r4ds

Logo for the #TidyTuesday Project. The words TidyTuesday, A weekly data project from the Data Science Learning Community (dslc.io) overlaying a black paint splash.TidyTuesday is a weekly social data project. All are welcome to participate! Please remember to share the code used to generate your results!
TidyTuesday is organized by the Data Science Learning Community. Join our Slack for free online help with R and other data-related topics, or to participate in a data-related book club!

 How to Participate
Data is posted to social media every Monday morning. Follow the instructions in the new post for how to download the data.
Explore the data, watching out for interesting relationships. We would like to emphasize that you should not draw conclusions about causation in the data.
Create a visualization, a model, a shiny app, or some other piece of data-science-related output, using R or another programming language.
Share your output and the code used to generate it on social media with the #TidyTuesday hashtag.A broad phylogenetic family tree diagram for Class Amphibia produced by AmphibiaWeb. The tree branches into three major color-coded orders radiating from a shared ancestor: Gymnophiona (caecilians) in purple at the top, Caudata (salamanders and newts) in orange in the middle section, and Anura (frogs and toads) forming the largest green clade along the bottom. Individual taxonomic families and key clades are labeled at the tips of each branch, illustrating the evolutionary relationships and relative family diversity across the three amphibian orders.A four-panel scientific grid analyzing amphibian diversity in Central Africa against distance from historical Pleistocene forest refugia in kilometers. Panel A plots species richness, showing a strong negative linear relationship (R-squared = 0.71) where species richness decreases significantly as distance from historical refugia increases. Panel B plots phylogenetic diversity, displaying a matching steep negative trend (R-squared = 0.75). Panel C plots relative phylogenetic diversity with a moderate negative trend (R-squared = 0.56). Panel D plots phylogenetic endemism, showing a weak relationship (R-squared = 0.09). Each panel features a spatial map of Central Africa above its scatter plot, illustrating highest species concentration clustered directly within historical forest refugia zones.
@jonthegeek.comOct 12, 2026, 11:43 AM

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!

An edit of the South Park Underpants Gnomes business plan. A small robot stands in front of the diagram. 
Phase 1: Submit a TidyTuesday dataset. 
Phase 2: ?
Phase 3: Profit
@jonthegeek.comOct 11, 2026, 1:56 AM

I'm pretty sure I have a 2-year-old open PR on my laptop for this. I haven't done much personal dev lately, but I'll try to find time to play with this!

@jonthegeek.comOct 10, 2026, 8:13 PM

I can't remember if I got this to an at-all-useful state before walking away from it, but I started an #rstats package a while back to semi-automatically sniff out APIs via chromote: jonthegeek.github.io/apisniffer/
One of these days I should finish that...

@jonthegeek.comOct 9, 2026, 1:44 PM

Our Slack is still active for book clubs and Q&A at dslc.io! @dslc.io

@jonthegeek.comOct 5, 2026, 7:38 PM

@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

Logo for the #TidyTuesday Project. The words TidyTuesday, A weekly data project from the Data Science Learning Community (dslc.io) overlaying a black paint splash.TidyTuesday is a weekly social data project. All are welcome to participate! Please remember to share the code used to generate your results!
TidyTuesday is organized by the Data Science Learning Community. Join our Slack for free online help with R and other data-related topics, or to participate in a data-related book club!

 How to Participate
Data is posted to social media every Monday morning. Follow the instructions in the new post for how to download the data.
Explore the data, watching out for interesting relationships. We would like to emphasize that you should not draw conclusions about causation in the data.
Create a visualization, a model, a shiny app, or some other piece of data-science-related output, using R or another programming language.
Share your output and the code used to generate it on social media with the #TidyTuesday hashtag.PCA biplot of fatty acid profiles from oils extracted from processed foods. Samples classified as consistent with authentic avocado oil cluster together on the right, clearly separated from inconsistent samples that cluster near vegetable oil comparators on the left, demonstrating that chemical fingerprinting can reliably distinguish authentic avocado oil from adulterated products.
@jonthegeek.comOct 5, 2026, 4:47 PM

The code that used it was a human fixing some insane LLM hallucination, actually. He may have used an LLM to help, but I *think* he fixed it himself.

@jonthegeek.comOct 5, 2026, 11:26 AM

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!

@karaman.isOct 4, 2026, 1:53 PMReposted by @jonthegeek.com

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

Two charts side by side under the title "Two hospitals, or none*", with a subtitle about data from the EU's Joint Research Centre. On the left, a bar chart of urban centres by their number of hospitals, from 1 to 32. Even numbers have much taller bars than odd ones. Two hospitals is the most common count at 1,982 urban centres, followed by four at 1,080, six at 677 and eight at 379. No odd number has more than 26. There is no bar at 1, marked with an arrow and the text "No urban centre has a single hospital". A second label reads "95% of hospital counts are even". On the right, one horizontal bar per region, with thickness showing how many urban centres the region has. Each bar is split into a blue part for urban centres with a hospital count and a grey part for those without. The blue share is smallest in Central and Southern Asia at 30%, then Sub-Saharan Africa at 47% and Eastern and South-Eastern Asia at 52%. It is largest in Europe at 95%.
@jonthegeek.comOct 2, 2026, 1:13 PM

Step 1 toward a happier life: Delete twitter and never think about loading it again.

@jonthegeek.comOct 2, 2026, 1:01 PM

I haven't figured out how this fits the metaphor quite yet, but BTW... You can use agentic ai to help prepare you to use agentic ai! But you have to guide it carefully and review, and it will probably often make sense to just do it yourself. Oh, hey, there it is!

@jonthegeek.comOct 2, 2026, 12:33 PM

(I don't think I've ever had a talk + over-arching metaphor pop into my head so fully formed 😊)

@jonthegeek.comOct 2, 2026, 12:30 PM

If you're adding agentic AI to a project, do some work up front to make sure it's ready for AI. Make sure the existing code has the style and design that you want. And please please please make sure your code is covered by tests (so you and the agent can tell if it's turning into the Red Skull).

@jonthegeek.comOct 2, 2026, 12:30 PM

Seeing the difference in how the same agentic AI models in the same IDE perform differently on different projects, it hit me that AI is like the super soldier serum in the MCU: "The serum amplifies everything that is inside, so good becomes great; bad becomes worse."

Stanely Tucci as Dr. Erskine, inventor of the super soldier serum, from Captain America: The First Avenger. He is in a barracks, preparing Steve Rogers mentally for the procedure.
@jonthegeek.comSep 29, 2026, 1:33 AM

Definitely not you, don't worry!

@jonthegeek.comSep 28, 2026, 7:19 PM

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!

@gabspalomo.bsky.socialSep 28, 2026, 7:00 PMReposted by @jonthegeek.com

Hope you all enjoy this week's #TidyTuesday dataset. It's a good one! Lots of Qs to explore regarding hospitals and pharmacies proximity to urban centres.
Also, now that I think I am getting the hang of it on how to submit a database, I will continue to explore other potential databases. It's fun!

@jonthegeek.comSep 28, 2026, 6:48 PM

Curator: @gabspalomo.bsky.social

@jonthegeek.comSep 28, 2026, 6:48 PM

@dslc.io welcomes you to week 39 of #TidyTuesday! We're exploring Health metrics in urban centres worldwide!

📂 https://tidytues.day/2026/2026-09-29
📰 https://human-settlement.emergency.copernicus.eu/ghs_ucdb_2024.php

#RStats #PyData #JuliaLang #DataViz #tidyverse #r4ds

Logo for the #TidyTuesday Project. The words TidyTuesday, A weekly data project from the Data Science Learning Community (dslc.io) overlaying a black paint splash.TidyTuesday is a weekly social data project. All are welcome to participate! Please remember to share the code used to generate your results!
TidyTuesday is organized by the Data Science Learning Community. Join our Slack for free online help with R and other data-related topics, or to participate in a data-related book club!

 How to Participate
Data is posted to social media every Monday morning. Follow the instructions in the new post for how to download the data.
Explore the data, watching out for interesting relationships. We would like to emphasize that you should not draw conclusions about causation in the data.
Create a visualization, a model, a shiny app, or some other piece of data-science-related output, using R or another programming language.
Share your output and the code used to generate it on social media with the #TidyTuesday hashtag.Exterior of a modern hospital building at dusk, with a brick and glass facade lit from within, a colorful sculpture of a child holding balloons on the wall, young trees and a landscaped walkway in front, and a U.S. flag near the entrance. Photo by Acton Crawford on Unsplash, https://unsplash.com/photos/brown-and-white-concrete-building-near-green-trees-under-blue-sky-during-daytime-8PB_TFEy2XQ
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