Wow! Wonderful to see the kind of impact that a great graphic designer can have on practice.

#rstats Periodic reminder: if you are writing articles / books w/ matrix, vector notation, my {matlib} 📦 has a whole suite of functions to make your life easier. Want a matrix X? --> latexMatrix() |> Eqn() Eqn() renders too in #RStudio Viewer See the vignette: friendly.github.io/matlib/artic...

Ah, that explains it! Gotta make sure it doesn't add itself as a package author 😜

#TodayinHistory #dataviz #Onthisday #OTD 📊 📅Mar 25, 1655: Dutch astronomer Christiaan Huygens discovers Titan, the largest moon of Saturn. His discovery expanded the known boundaries of the solar system and laid the foundation for planetary and satellite studies in modern astronomy.

#TodayinHistory #dataviz #OTD 📊 🎂Mar 25, 1862 Maurice d'Ocagne born in Paris, France 🇫🇷 In 1884, created the first alignment diagrams, using parallel axes, the essential ideas used in parallel coordinates plots. Nomograms, as these were called, allowed direct visual calculation 👀🔗 bit.ly/3iB7nwt

Quarto Pub's retirement/sunsetting messed up my dataviz assignment on interactivity! But Quarto 1.9+ supports Posit Connect Cloud (the replacement for Quarto Pub), so I updated my assignment's instructions: andrewheiss-datavizsp26-11-exercise-recreate.share.connect.posit.cloud/instructions...

My same beef with KS, Shapiro-Wilks tests for normality, Levene tests for homogeneity of variance, ...

#dataviz An #infographic parody? Or does it have the right bite?

Another wrinkle on this: I'm seeing #rstats packages on GitHub listing Claude as a contributor. I don't see this as wrong, just a way of acknowledging/disclosing that you got help in coding, documentation, writing unit tests ...

#rstats Nice! Next level: waiting for someone to do the digits of pi in rayshader using Simpsons characters instead of colors

📊#dataviz Ever wonder how JPEG is able to compress images without much loss in perceptual quality? This blog post by Sophie Wang is filled with interactive demos of the steps. www.sophielwang.com/blog/jpeg

Flashback for March 21, 2026 28 points 🟩🟩🟩🟩🟩🟩🟩🟩 Play here: www.nytimes.com/interactive/...

#TodayinHistory #dataviz #Onthisday #OTD 📊 🎂Mar 23, 1749 Pierre-Simon, Marquis de Laplace born in Beaumont-en-Auge, Normandy, France 🇫🇷 1810: The central limit theorem explains why averages of many distributions tend to be close to the normal distribution

#TodayinHistory #dataviz #Onthisday #OTD 📊 🎂Mar 23, 1769 William Smith born in Churchill, Oxfordshire, England 🇬🇧 1801: The first large-scale geological map of England and Wales (6' x 9'!) (called "the #map that changed the world")

#DuBoisChallenge2026 - took @datavisfriendly.bsky.social's advice and did two recreations of Du Bois' plate showing land ownership by Black Georgians. An original, and one showing the general increase in percentage of land ownership in certain areas Code in #rstats: github.com/drjohnrussel...

#TodayinHistory #dataviz #OTD 📊 💀Mar 22, 1767 Johann Peter Süssmilch died in Berlin, Germany 🇩🇪 1741: Beginnings of the study of population statistics (demography) His work, Die göttliche Ordnung... studied birth rates and M/F ratio (1050 M to 1000 F) as evidence for a divine order bit.ly/3TJpKmi

#TodayinHistory #dataviz #Onthisday #OTD 💀Mar 21, 1928 Edward Walter Maunder died in London, England 🇬🇧 1904: Developed the "butterfly diagram'' to study the variation of sunspots over time by latitude, discovering a remarkable 11 year cycle.

oh god, not this again. Lord('s paradox) have mercy...

Trump, Smith, Poilievre are NOT Conservatives They are authoritarian libertarians pretending to be conservatives to hoodwink voters. Call them what they are. #cdnpoli #uspoli #abpoli markhamhislop.substack.com/p/trump-smit...

#TodayinHistory #dataviz #Onthisday #OTD 📊 🎂Mar 21, 1768 Jean Baptiste Joseph Fourier born in Auxerre, Bourgogne, France 🇫🇷 Fourier series, yeah, yeah but also: In 1821 he developed cumulative frequency curves, showing inhabitants of Paris by age groupings ("Notions Generales, Sur La Population")

cool! But 3 min???

Quarto v1.9 is out! We'll have an announcement blog post soon, but quarto.org/docs/download/ has the main highlights, including: - PDF accessibility in latex and typst - llms.txt support - third-party engine extensions Give it a whirl, and thanks!

#TodayinHistory #dataviz #Onthisday #OTD 📊 🐝 📅Mar 20, 1858 Dendrograms (tree diagrams) used to display similarity measures arose in a 1958 study of bee species by Sokal & Michener

#TodayinHistory #dataviz #Onthisday #OTD 📊 🎂Mar 18, 1874 Frank Julian Warne born in Parkersburg, WV, USA 🇺🇸 1916: Developed a correspondence course in graphical methods (20 lessons for $50) (-> book in 1919)

My wife, Martha was made an Officer of the Order of Canada today 🇨🇦🇨🇦🇨🇦 So proud of all she accomplished for childcare in Canada

Exactly! That would be so much fun

Interesting when the urinal at the movies has an ad for prostate screening. So thoughtful

Beyond TeX, can there every be enough LaTeX math parsers and renderers?

TodayinHistory #dataviz #Onthisday #OTD 💀Mar 17, 2007 John Backus died in Ashland, OR, USA 🇺🇸 1954: Published the first formal proposal for FORTRAN; the first high level language for computing 🔗 bit.ly/3DQnswH It was proprietary to IBM. The 1st FORTRAN compiler was completed 1955-56.

One must concede that LLMs learn at least *something* about meaning

With each new #DuboisChallenge, I marvel at the insight and ingenuity that WEB DuBois brought to his depictions of the Georgia Negros, but also at his spectacular lack of a sense of color in his palettes. Why doesn't anyone want to give him a helping hand? Re-Visions of DuBois?

#datavis @anychart.com, on their Data Viz Weekly caught my eye with this lovely depiction of Gender views in Europe by Teresa Talò The pattern is so clear, color scale nicely muted. I wondered what spatial analysis could do here to show something of an overlaid visual summary. Arrows? contours?

#marchstatness #stats And the run off among your favorite stats methods is about to begin. I filled out my score card already.

Like other diagnostic tools VIF may be useless if you fail to visualize the nature of the problems. Check out the {visCollin} 📦 for some solutions friendly.github.io/VisCollin/

#TodayinHistory #dataviz #Onthisday #OTD 🎂Mar 16, 1813 John Snow born in Yorkshire, England 🇬🇧 1854: His dot map of deaths in Soho leads (eventually) to discovery of the water-borne source of a cholera epidemic. I celebrate his birthday with a couple of my favorite Snow Map re-creations

#dataviz Who invented the Smiley? Turns out, it was a graphic designer, Harvey Ball 👀https://en.wikipedia.org/wiki/Harvey_Ball

📊#TodayinHistory #dataviz #Onthisday #OTD 📅Mar 15, 1834 The Statistical Society of London was founded by Charles Babbage, Thomas Malthus, Adolphe Quetelet and Richard Jones. Became the Royal Statistical Society in 1887, after the Jubilee Meeting in June 1885 en.wikipedia.org/wiki/Royal_S...

#TodayinHistory #dataviz #OTD 💀Mar 15, 1897 James Joseph Sylvester died in London, England 🇬🇧 1878: The term "graph'' introduced-- but referring to diagrams of analogies between chemical bonds in molecules and graphical representations of mathematical invariants (also coined the term "matrix'')

#rstats {statsquotes} Quote of the Day "Give a man a fish and he will eat for a day. Teach a man to fish and you lose a consulting job forever."" --- Howard Wainer, 2016

#rstats My vcdExtra::color_table() function gives a nice way to render frequency tables as "smart" tables, using background heatmap shading based on frequency or residuals from a model. It uses {gt} for this. But: I had problems rendering Rmd/qmd to PDF or Word. 🧵👇For solution

A little #rstats exercise. Happy Pi Day for those who celebrate and if your local date format allows it. 🎊

All decked out for Pi day Think I’ll bake a Transcendental Raspberry one

Plotting {rpart} decisions trees with their criteria in #rstats (Please someone tell me someone has already done this because my code is super ugly...)

You did plot your data, didn't you?

This is an important new historical #dataviz discovery. A #flowmap from 1773 ???

#TodayinHistory #dataviz #Onthisday #OTD 📊 💀Mar 13, 1911 Henry Pickering Bowditch died in Boston, USA 🇺🇸 1877: Extensive statistical study of 24,500 children to improve school practice; early ideas of correlation and regression

#TodayinHistory #dataviz #Onthisday #OTD 📊 🎂Mar 13, 1733 Joseph Priestley born in Leeds, England 🇬🇧 Most famous for discovering oxygen, but also --- 1765: Historical timeline (life spans of 2,000 famous people, 1200 B.C. to 1750 A.D.)