Datavis Musings

Thoughts on data visualization, statistical graphics, R programming, and the history of data visualization.

Welcome to Datavis Musings

announcement

Introducing my new blog on data visualization, statistical graphics, and R programming

Apr 20, 2026
Michael Friendly

The Making of Vis-MLM

Vis-MLM
quarto
books

A behind-the-scenes series on writing a technical book with Quarto: choices, surprises, and some hard-won solutions

Apr 26, 2026
Michael Friendly

Creating Book Indexes in Quarto

Vis-MLM
quarto
latex
indexing
books

R helper functions, LaTeX macros, and the underscore problem

Apr 28, 2026
Michael Friendly

Beach Science: A New Field is Born

beach science
humor
science

The practice of lying on a beach towel and allowing fundamental scientific questions to bubble up from the sand and sea around you.

Jun 12, 2026
Michael Friendly

Warm-Up Exercises for the Beach Scientist

beach science
humor
science

Before any good Beach Science can begin, the researcher must calibrate. Four exercises for becoming properly horizontal, attentive, and curious.

Jun 14, 2026
Michael Friendly

BS: How Warm Is “Warm”?

beach science
statistics
humor
heatmap
ridgeline plot

Temperature words are doing quantitative work while pretending to be qualitative. Beach Science and graphics would like to fix this.

Jun 21, 2026
Michael Friendly

BS: Are You a Beach Person or a Pool Person?

beach science
personality
humor

A psychometric instrument disguised as a lifestyle decision, and a proposal for the scientific study of beachiphilia.

Jun 23, 2026
Michael Friendly

Beach Patterns as a Physics Laboratory

beach science
physics
patterns

Sand ripples and sunlit caustics—two beautiful patterns, one deep principle

Jun 27, 2026
Michael Friendly

BS: The Aerodynamics of Not Losing Your Umbrella

beach science
physics
humor

A beach umbrella in wind is a sail on a stick jammed into sand. Beach Science investigates.

Jun 28, 2026
Michael Friendly

Distribution of Determinants of 3×3 Matrices from {1,2,…,9}

R
combinatorics
linear algebra
simulation

Exploring an exact combinatorial result and Monte Carlo approximation for determinants of all permutation matrices of the digits 1–9

Jul 9, 2026
Michael Friendly

Mind Your Chunks

The Care and Feeding of R Code Chunks
Vis-MLM
quarto
knitr
books

Treating a book’s .qmd source files as data: parsing ~670 R code chunks into a queryable data frame to audit code-folding, and other problems

Jul 25, 2026
Michael Friendly

Van Langren’s Secret, Finally Told

History of Statistics
Cryptography
Data Visualization

393 years after van Langren encoded it, an amateur codebreaker gave an answer I never thought to look for

Jul 27, 2026
Michael Friendly
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