Michael Friendly

@datavisfriendly.bsky.social

6249 Followers 484 Following

ASA Fellow; #rstats developer of graphical methods for categorical and multivariate data; #datavis history of data visualization; #historicaldatavis; Milestones project Web: www.datavis.ca GitHub: github.com/friendly

404 error page for the vcdExtra package. The digits 4 0 4 are on top of a scatterplot whose points are sad-face emojis
Dot chart of my GitHub commit history by week (columns) and day of week (rows) each square is shaded by level of activity -- darker for more
Portrait of Ladislaus Josephovich Bortkiewicz
Street sign on Rue Monge in Paris, with a space invaders plaque planted above it
An amusing example of Venn diagrams. Three circles, labeled "People who like Venn diagrans", "People who draw circles around notes", and "People who put coffee cups down on their work", the latter a coffee-stained circle. In the intersection is the word "Me"
The first pie chart: from Playfair's Statistical Breviary (1801), showing the proportions of the Turkish Empire located in Asia, Europe and Africa before 1789
Portrait of Vladimir Kosma Zworykin holding his iconoscope
The first modern-looking weather map, of Europe, showing the weather for 6 Mar 1783. It shows contours of barometric pressure and arrows indicating wind direction on a blank map of Europe.
Geological map of Europe using color tints and patterns to show the distribution of soils and minerals.
Bubble plot of lifespan vs per capita Income, with the size of the bubble ~ population. It shows Hans Rosling behind a transparent plot as he appeared in a lecture
Table showing the various "retinal variables" of graphics -- position, size shape, orientation color -- in relation to their uses for points, lines, graphics
Photo of John W. Tukey, most likely at Bell Labs, in a computer room with racks of computer tapes.
An engraved cheese map of France, highlighting the regions where cow / sheep / goat predominates
A section of one of Martonne's 1919 ethnographic maps showing a part of Europe with colors and shading patterns identifying dominant ethnic groups
Page 8 of van Langren's 1644 "La Verdadera Longitud" -- the printed cipher exactly as his readers first saw it. Stumped everyone for 393 years.
ALT: Photo of Zworkin holding his iconoscope television camera-tube
Row I (State-by-state pies): Comparative view of the distribution of Blindness by sex and nativity in the several States. (Those figures refer to the large figure in the left upper corner.) Row II:Comparative view of the distribution of Blindness by sex and color. (Those figures refer to the large figure in the right upper corner.) Row III (circles, not pies): Comparative view of the increase in the number of the Blind between 1860 and 1870.
Device used by Scheiner to record sunspots. It consists of a tube which focuses an image of the sun on a plane perpendicular to the axis.
Diagram showing the idea behind the lexis diagram. A grid of Age by Year showing diagonals of Cohort. Allows you to track trends on any one the these three related time axes
Poster for a movie titled "Planet of the Dopes". With a caption of subtitle, "Orange Trump Slime Covers Toronto; Seeks Revenge". There's a large goose in the foreground, bottom left. Out of it spew a bunch of MAGA supporters, one with as "51st State" sign and ICE agents wearing masks
Oresme's "pipes" -- diagrams potential functional relations for physical systems, like a projectile (parabola), linear decrease, ...
Portrait of Émile Levasseur seated at a desk, examining a statistical chart
Portrait of Louis Jacques Mandé Daguerre
Density-like display of the distribution of propensity to crime across age groups on the X axis
Portrait of Christiaan Huygens
Histogram of density of index entries per page, by book chapter
Map of foreigners in the arrondisements of Paris, (height=population of arrondisements in Paris, width=percent foreigners; area = total number)
Cover of De triangulis omnimodis, Johannes Müller (1476)
Portrait of Léon Lalanne, dressed in his finery
Guerry's 1833 choropleth map of crimes against persons (dark is worse)
Parallel coordinates, ranks of states in the US Census from 1790 onwards. Note the use of shading/color in the boxes to help keep them visually distinct.
Photo of John Hartigan looking very Australian
Portrait of Pierre Simon Laplace
Artistic portrait of William Oughtred in front of a slide rule. The large X refers to multiplication, not a social media platform
World map, from Ortelius 1570 Theatrum Orbis Terrarum It shows the five continents, with approx. correct shapes except for S. America, as well as the Artic and Antarti
Diagram of a MEMEX
Presidential Venn diagram depicting Senility (Ronald Reagan), Incompetance (George Bush) and Corruption (Richard Nixon), with Donald Trump at the intersection of all three
A collection of butterfly designs inspired by graphic types
Detail of Charpentier's map of soils and minerals showing the color/shading legend on a pile of stone blocks
Color portrait of Siméon Denis Poisson, looking quite dashing
Statue of Blaise Pascal at the base of Saint-Jacques tower in Paris
Rectangle ideographs showing variation among 16 colonies of Iris versicolor using height, width and thickness of the sides
Cover of Harry Harmon's Modern Factor Analysis
Image of me holding my baby book as a proud papa. The text reads: That feeling after finally... ... clicking 'git push' on the book draft to the editor!