Michael Friendly @datavisfriendly.bsky.social · 2hA nice study of 'dataset forensics' .... Just look at this diff chart 040
Michael Friendly @datavisfriendly.bsky.social · 2hIf you are already a DVS (free) member, take the next step to paid and help support the important (and beautiful!) work of the Data Visualization Society. 010
Michael Friendly @datavisfriendly.bsky.social · 4h#TodayinHistory #dataviz #OTD 📊 🎂Sep 29, 1829 Michael George Mulhall born in Dublin, Ireland 🇮🇪 1884: 🥇1st? use of a pictogram, to represent data by icons proportional to a number The train one is accurate; the wheel one commits the area illusion, using diameter to represent the number 041
Reposted by Michael FriendlyAndreas Brandmaier @brandmaier.bsky.social · 28/09/2026Ever looked at your graph and thought: this needs a more dramatic exit strategy? Make your R base plots self-destruct with style. If you must, download here: github.com/brandmaier/d... #RStats #DataVisualization #RProgramming #DataScience #OpenSource #AcademicHumor #noAI 47121
Reposted by Michael FriendlyGrant McDermott @gmcd.bsky.social · 28/09/2026𝐭𝐢𝐧𝐲𝐩𝐥𝐨𝐭 v0.8.0 now available on CRAN 🎉 grantmcdermott.com/tinyplot/ This is another big release: new plot types, finer facet & axis control, smarter handling of categorical data, and lots more. Same tiny footprint, though. Short highlight thread below 🧵 #rstats 13414
Michael Friendly @datavisfriendly.bsky.social · 29/09/2026Way cool. Georgy Voronoy would approve en.wikipedia.org/wiki/Georgy_...en.wikipedia.orgGeorgy Voronoy - Wikipedia 050
Reposted by Michael FriendlyCRAN Package Updates Bot @cranberriesfeed.bsky.social · 26/09/2026New CRAN package ggCheysson with initial version 1.0.1 #rstats cran.r-project.org/package=ggCheyss…cran.r-project.orgCRAN: Package ggCheyssonImplements for 'ggplot2' the stylistic elements (fonts, hatched patterns, color palettes) used by 'Emile Cheysson' in the 'Albums de Statistique Graphique', sometimes called the pinnacle of the Golden Age of Statistical Graphics. 011
Michael Friendly @datavisfriendly.bsky.social · 27/09/2026#TodayinHistory #dataviz #OTD 📊 🎂Sep 26, 1934 Vincent P. Barabba born in Chicago, IL, USA 🇺🇸 1973-76: Revival of statistical graphics innovation by U.S. Bureau of the Census (After the Walker's Statistical Atlas of the US, interest in graphics died out ~1900) Interview with Barabba: bit.ly/3IxZs3Swww2.census.gov 020
Reposted by Michael FriendlyRobert Simmon @rsimmon.bsky.social · 25/09/2026Re-created versions of Moses Harris’s color wheels (published in 1766!) by the always-delightful @rougeux.bsky.social www.c82.net/natural-colo... #color #dataviz 1193
Reposted by Michael FriendlyRobert Reich @rbreich.bsky.social · 25/09/2026On Dolly Parton Day, I'm remember how she... -Gifted millions of free books to kids -Ensured musicians she worked with got union benefits -Helped fund medical research and the COVID vaccine -Donated millions to communities hit by natural disasters -Funded high school band programs She is missed! 219140523069
Michael Friendly @datavisfriendly.bsky.social · 26/09/2026#TodayinHistory #dataviz #OTD 📊 💀Sep 25, 1777 Johann Heinrich Lambert died in Berlin, Germany 🇩🇪 1760: Curve-fitting and interpolation from empirical data points 1772: Developed diagrams to represent color systems. See: Bullynck, bit.ly/3JxKmvi, bit.ly/4g5Hy4H 050
Reposted by Michael FriendlyDeborah Lee-Talbot @colourfulhistories.bsky.social · 25/09/2026You would think, after four years of this commercial AI-BS I could write a set of guidelines for historians without being interrupted by tech-bros confessing to something stupid. This means I then have to -research the stupid act - explain the stupid act - remind historians they have ethics. 023
Michael Friendly @datavisfriendly.bsky.social · 25/09/2026You wrote a brilliant article in 3,850 words; your editor wants 2,500. What counts as a word? How to count them? My #rstats wordcount() function counts the rendered .docx by section: body text vs. headings, footnotes, captions, tables, refs. Mine: body 2,484. Whew! 👨💻https://tinyurl.com/252q6f3ztinyurl.comWhat counts as a word? Count a .docx by section and category (body, headings, footnotes, captions, tables, references) the way your editor sees it — RWhat counts as a word? Count a .docx by section and category (body, headings, footnotes, captions, tables, references) the way your editor sees it — R - README.md 4222
Michael Friendly @datavisfriendly.bsky.social · 25/09/2026#rstats Want to learn to make mosaic plots?📊 My students Gabriel Crone & Naomi Gutierrez updated their Shiny app for interactive mosaic displays. Upload data, choose a log-linear model, customize display, download publication-quality PNG/SVG & R code Try it! fohpsyc.shinyapps.io/Shiny-Mosaics/fohpsyc.shinyapps.ioShiny Mosaics 071
Michael Friendly @datavisfriendly.bsky.social · 25/09/2026#TodayinHistory #dataviz #OTD 📊 🎂Sep 24, 1501 Gerolamo Cardano born in Pavia, Italy 🇮🇹 1562: Computation of probabilities. Liber de Ludo Alaea, a practical guide to gambling, containing the first systematic computation of probabilities (& a how-to on cheating) 010
Michael Friendly @datavisfriendly.bsky.social · 25/09/2026#TodayinHistory #dataviz #OTD 📊 📅Sep 23, 1884 Herman Hollerith filed his first patent application, titled "Art of Compiling Statistics" leading to punched cards and counter-sorter machines. Later called "IBM cards" ✋Raise your hand if you ever used a keypunch machine 👀https://bit.ly/46ElWZp 3100
Reposted by Michael FriendlyTom Gauld @tomgauld.bsky.social · 24/09/2026My latest @newscientist.com cartoon. many more here: www.newscientist.com/author/tom-gauld/ 332862724
Michael Friendly @datavisfriendly.bsky.social · 24/09/2026@infowetrust.com turns the @davidrumsey.bsky.social Map Library staircase into a a piece of art I WANT TO HOLD and FOLD. substack.com/@infowetrust...substack.comRJ Andrews (@infowetrust)I made a pop-up. 011
Michael Friendly @datavisfriendly.bsky.social · 24/09/2026The hollow bars convey more info to my eyes. Unfilling them here seems a win 030
Michael Friendly @datavisfriendly.bsky.social · 24/09/2026Could be a game changer for diverging color palettes 0192
Michael Friendly @datavisfriendly.bsky.social · 24/09/2026#TodayinHistory #dataviz #OTD 📊 💀Sep 23, 1938 Maurice d'Ocagne died, Havre, France 🇫🇷 1884: The first alignment diagrams, using sets of parallel axes, rather than axes at right angles; ▶️ the essential ideas used in parallel coordinates plots ▶️ nomography: graphical computation of complex functions 120
Michael Friendly @datavisfriendly.bsky.social · 24/09/2026#TodayinHistory #dataviz #OTD 📊 🎂Sep 23, 1915 George Alfred Barnard born in Walthamstow, London, England 🏴 1969: Suggestion for displaying five variables by means of movements on a CRT. This technical advance created new possibilities for high-D visualization See: tinyurl.com/ymynzjdptinyurl.comMilestones in the History of Thematic Cartography, Statistical Graphics, and Data VisualizationMilestones in the History of Thematic Cartography, Statistical Graphics, and Data Visualization 010
Reposted by Michael FriendlyJon Harmon (he/him/his) @jonthegeek.com · 22/09/2026I've had some helpful/hopeful replies in this thread (eg bsky.app/profile/hadl...). I also finally read this blog by @hadley.nz substack.com/home/post/p-... , and I wish he'd done part 1 of that talk one more time at #PositConf2026! It would've helped to offset some of the other AI. #RStats #dataBSsubstack.comy code when ai?A talk on AI and coding 2161
Reposted by Michael FriendlyRobert Simmon @rsimmon.bsky.social · 23/09/2026Maps of magnetic fields! 0101
Michael Friendly @datavisfriendly.bsky.social · 23/09/2026#TodayinHistory #dataviz #OTD 📊 🎂 Sep 22, 1759 William Playfair born in Dundee, Scotland 🏴 PLAYFAIR DAY -- he's 267 today He is the father of modern data graphics: 1786: Invention of the line graph and bar chart 1801: Invented the pie chart 044
Michael Friendly @datavisfriendly.bsky.social · 23/09/2026#TodayinHistory #dataviz #OTD 📊 🎂Sep 22, 1791 Michael Faraday born in Newington Butts, Surrey, England 🏴 1820-1835: Graphical analysis applied to natural phenomena (electric and magnetic lines of force, weather, tides) Made these invisible constructs open to inspection 👓 082
Michael Friendly @datavisfriendly.bsky.social · 23/09/2026Maybe my PhD in Psych can help here: There's the rub, if you're a Normal kind of guy. Just start to imagine yourself as belonging to a +skewed distribution, that can put you into a longer tail, with a bunch of friends to rock on. 061
Michael Friendly @datavisfriendly.bsky.social · 22/09/2026Doesn't do much for the flags, but makes a nice demonstration of how PCA works on a collection of images 030
Michael Friendly @datavisfriendly.bsky.social · 20/09/2026#TodayinHistory #dataviz #OTD 📊 📅The First International Statistical Congress held on Sept 19, 1853 in Brussels, Belgium 🇧🇪 Organized mainly by Adolphe Quetelet,; 26 countries sent representatives. Some main goals: standardization of measurements and tables; establish national statistical bureaus 041
Michael Friendly @datavisfriendly.bsky.social · 20/09/2026#TodayinHistory #dataviz #OTD 📊 🎂Sep 19, 1876 Max Otto Lorenz born in Burlington, Iowa, USA 🇺🇸 1905: Lorenz curve (cumulative distribution by rank order, to facilitate study of concentrations, income distribution) It was an undergrad paper! 1100
Michael Friendly @datavisfriendly.bsky.social · 19/09/2026I'm an Old Hand LaTeX guy, now writing more in #Quarto, with {tinytex} at my side. Who's this new Typst kid? Do I want to learn a new language? Donald Knuth was so confident of TeX-- design frozen, vers 3.14, 3.145, only approaching \pi. Enter: A newer kid on the block, "ratex" bit.ly/4h1jP7Zleoliu0.github.ioWhy I Built ratex: Modernizing TeX While Waiting for Typst — Leo LiuTypst is the future of typesetting, but academic journals and arXiv still mandate legacy LaTeX. Why I built ratex in pure Rust to eliminate auxiliary file clutter, cryptic errors, and tool fragmentati... 2101
Michael Friendly @datavisfriendly.bsky.social · 19/09/2026#TodayinHistory #dataviz #OTD 📊 💀Sep 18, 1783 Leonhard Euler died in Saint Petersburg, Russia 🇷🇺 Among many other things.... 1752: Introduced a notation for which gives coordinates of every possible point in 3D space, (x,y,z). 070
Reposted by Michael FriendlyCaspar van Lissa 🟥 @cjvanlissa.bsky.social · 17/09/2026Teaching Latent Class Analysis at @unibas.ch today using tidySEM 0.2.12! Basic LCA for continuous, ordinal, and nominal indicators; confirmatory LCA, latent class growth analysis, auxiliary variables, and custom models. Follow along at home using the open coursebook: cjvanlissa.github.io/lca_course/cjvanlissa.github.ioLatent Class AnalysisBook Description 092
Michael Friendly @datavisfriendly.bsky.social · 18/09/2026An incredibly gorgeous & detailed #map of Upper Canada, from Quebed to Lake Huron by James Wyld (a Royal Geographer), 1838 Someone drew lines separating Canada into administrative districts; I always wonder why they run SE -> NW 👀https://www.davidrumsey.com/maps3223.html 130
Michael Friendly @datavisfriendly.bsky.social · 18/09/2026Vision science: The difference between Rod Stewart and Cone Stewart finally clarified 1467
Reposted by Michael FriendlyAlberto Cairo @albertocairo.com · 16/09/2026New in the Open Visualization Academy newsletter: "The UMAP Isn't the Territory" by Michela Tjan openvisualizationacademy.beehiiv.com/p/the-umap-i... #dataViz #infographics #dataJournalism #dataVisualization See all our courses and tutorials: openvisualizationacademy.orgopenvisualizationacademy.beehiiv.comThe UMAP Isn't the Territory 032
Reposted by Michael FriendlyArmine Yalnizyan @armineyalnizyan.bsky.social · 16/09/2026Let the games begin www.reuters.com/live/live-fe...reuters.comLive: Fed hikes rates as inflation worries push up bond yieldsThe Federal Reserve raised interest rates and flagged further increases in borrowing costs in coming months, with new U.S. central bank chief Kevin Warsh joining a unanimous decision that effectively ... 054
Michael Friendly @datavisfriendly.bsky.social · 17/09/2026Recursive self-improvement of AI visualized Now I understand what the hype is all about 081
Reposted by Michael FriendlyCRAN Updates @cranupdates.bsky.social · 16/09/2026New on CRAN: ggmosaic2 (0.5.1). View at CRAN.R-project.org/package=ggmosaic2cran.r-project.orgggmosaic2: Mosaic Plots in the 'ggplot2' Framework, ExtendedMosaic plots in the 'ggplot2' framework. Mosaic plot functionality is provided in a single 'ggplot2' layer by calling the geom 'mosaic'. This extends the now-defunct 'ggmosaic' package by allowing fitted loglinear models which can be used to show patterns of association among variables in frequency tables. 021
Reposted by Michael FriendlyRJ Andrews @infowetrust.com · 15/09/2026We are open-sourcing dbt Charts: a clear language for describing and rendering dashboards from a single YAML file. It makes smarter, prettier dashboards that you own, all while saving you tokens. 📈 dbtCharts.com 0233
Reposted by Michael FriendlyDr Mircea Zloteanu 🌺🌞🍃 @mzloteanu.bsky.social · 15/09/2026#statstab #617 Why Adjusted Regression Coefficients Are Less Descriptive Than They Look Thoughts: Great overview of the "controlling for" issue in multiple regression #regression #inference #covariates #multivariable #guide #adjustment #causalinference rpsychologist.com/descriptive-...rpsychologist.comWhy Adjusted Regression Coefficients Are Less Descriptive Than They Look | R PsychologistAn interactive article about how regression adjustment works and the pitfalls of conditional associations in descriptive studies. 072
Reposted by Michael FriendlyInternet Archive @archive.org · 15/09/2026🌐 The internet doesn’t remember everything. CARTA Presents: “DIGITAL GHOSTS - ACCESS TO WEB ARCHIVES THROUGH DATA AND CREATIVITY” looks at how creative visualization can make online decay visible, and what disappearance means for cultural memory. Oct. 7, 8 AM PT 🎟️ us02web.zoom.us/webinar/regi... 013134
Michael Friendly @datavisfriendly.bsky.social · 16/09/2026#TodayinHistory #dataviz #OTD 📊 🎂Sep 15, 1879 Leonard Porter Ayres born in Niantic, Connecticut, USA 🇺🇸 1919: Social statistical chartbook, containing a variety of graphic and semi-graphic displays in a USA Government report. (These ideas influenced JW Tukey's EDA) 👀 archive.org/details/warw... 050
Michael Friendly @datavisfriendly.bsky.social · 16/09/2026A colleague sent this-- best #Psychology #Joke #Coffeecup I've seen in a long time... 090
Michael Friendly @datavisfriendly.bsky.social · 15/09/2026📊 #rstats #dataviz My ggCheysson package was just re-submitted to CRAN 🤞 @infowetrust.com Brings the graphic style of Émile Cheysson's Albums de Statistique Graphique (1880s) to ggplot2: authentic color palettes, hatching patterns, and hand-drawn fonts. 🔗https://friendly.github.io/ggCheysson/ 2255
Reposted by Michael FriendlyAndrew Gelman et al. @statmodeling.bsky.social · 14/09/2026This is how we do modern frequentist statistics: Using fake-data simulation to understand what can happen in a study statmodeling.stat.columbia.edu/2026/09/14/t...statmodeling.stat.columbia.edu This is how we do modern frequentist statistics: Using fake-data simulation to understand what can happen in a study | Statistical Modeling, Causal Inference, and Social Science 1185
Michael Friendly @datavisfriendly.bsky.social · 15/09/2026von Humboldt was so much more: polymath, geographer, naturalist, explorer, graphic designer. Here's another of my favorites, showing the distribution of plants by elevation. You can zoom in on the original: bit.ly/3sWbWtR 0237
Michael Friendly @datavisfriendly.bsky.social · 15/09/2026#TodayinHistory #dataviz #OTD 📊 🎂Sep 14, 1769 Alexander von Humboldt born in Berlin, Germany 🇩🇪 🥇1817: First graph of isotherms, showing mean temperature around the world by latitude and longitude. An important step: mapping the invisible; 2D suggests 3D 0173