Martin Krzywinski / Canada's Michael Smith Genome Sciences Centre / mkweb.bcgsc.ca Martin Krzywinski / Canada's Michael Smith Genome Sciences Centre / mkweb.bcgsc.ca - contact me Martin Krzywinski / Canada's Michael Smith Genome Sciences Centre / mkweb.bcgsc.ca on Twitter Martin Krzywinski / Canada's Michael Smith Genome Sciences Centre / mkweb.bcgsc.ca - Lumondo Photography Martin Krzywinski / Canada's Michael Smith Genome Sciences Centre / mkweb.bcgsc.ca - Pi Art Martin Krzywinski / Canada's Michael Smith Genome Sciences Centre / mkweb.bcgsc.ca - Hilbertonians - Creatures on the Hilbert CurveMartin Krzywinski / Canada's Michael Smith Genome Sciences Centre / mkweb.bcgsc.ca - Pi Day 2020 - Piku
Feel the vibe, feel the terror, feel the painHooverphonicMad about you, orchestrally.more quotes

roads: worthwhile


Scientific graphical abstracts — design guidelines


visualization + design

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
A `\pi` day music video!: Transcendental Tree Map premieres on 2020 Pi Day from Max Cooper's Yearning for the Infinite. Animation by Nick Cobby and myself. Watch live from Barbican Centre.
Music video of the “Transcendental Tree Map” Max Cooper's Yearning for the Infinite album. This video premiered on 2020 Pi Day. Music by Max Cooper. Animation by Nick Cobby and myself.
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
The 2020 Pi Day art celebrates digits of `\pi` with piku (パイク) —poetry inspired by haiku.
They serve as the form for The Outbreak Poems.
Tau Day tree map animation of 8,909 digits of `\tau = 2 \pi` created with 40,015 lines. The video is 6:28 minutes long.

`\pi` Day 2019 Art Posters - Digits, internationally.


Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2019 `\pi` has hundreds of digits, hundreds of languages and a special kids' edition.

Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2018 `\pi` day

Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2017 `\pi` day

Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2016 `\pi` approximation day

Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2016 `\pi` day

Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2015 `\pi` day

Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2014 `\pi` approx day

Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2014 `\pi` day

Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2013 `\pi` day

Pi Day 2019 Art Posters  - Digits, internationally.
 / Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Circular `\pi` art

On March 14th celebrate `\pi` Day. Hug `\pi`—find a way to do it.

For those who favour `\tau=2\pi` will have to postpone celebrations until July 26th. That's what you get for thinking that `\pi` is wrong. I sympathize with this position and have `\tau` day art too!

If you're not into details, you may opt to party on July 22nd, which is `\pi` approximation day (`\pi` ≈ 22/7). It's 20% more accurate that the official `\pi` day!

Finally, if you believe that `\pi = 3`, you should read why `\pi` is not equal to 3.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
All art posters are available for purchase.
I take custom requests.

How many ages hence
Shall this our lofty scene be acted over
In states unborn and accents yet unknown!
—Willian Shakespeare (Julius Caesar, Act III, Scene 1)

Welcome to this year's celebration of `\pi` and mathematics.

The theme this year is typographical and pure—in contrast to last year's extremely elaborate computational art. This year is also the first time I have made a special kids' edition!

This year's poem is by Viorica Hrincu and it is about complications.

This year's `\pi` day song is Tshinanu by Kashtin.

If you enjoy art based on type, explore my other typographical works.

`\pi` day — kids edition!

Several teachers have reached out to me in the past and asked for art to hang in their classrooms. So I thought what better way to get kids excited and talking (and reading) about math than with an explosion of colors and phat fonts.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Just for kids: 127 digits of `\pi` in English. (zoom)
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Just for kids: 116 digits of `\pi` in 64 languages. (zoom)

The international kids' poster uses the following languages: Afrikaans, Albanian, Azerbaijani, Basque, Catalan, Cebuano, Corsican, Croatian, Danish, Dothraki, Dutch, English, Esperanto, Estonian, Finnish, French, Frisian, Galician, German, Gongduk, Haitian/Creole, Hausa, Hawaiian, Huastec/Mayan, Icelandic, Indonesian, Irish, Italian, Khasi, Ladan, Latin, Latvian, Lithuanian, Luxembourgish, Malagasy, Maltese, Maori, Nao, Norwegian, Polish, Portuguese, Puyuma, Ro, Samoan, Scots/Gaelic, Sesotho, Shona, Slovak, Slovenian, Solon, Solresol, Somali, Spanish, Swahili, Swedish, Tagalog, Tenerife, Tetun, Turkish, Welsh, Xhosa, Yoruba, Zenaga, and Zulu.

Some of these languages are fictional or engineered—I'll leave it to you to find them.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Just for kids: 116 digits of `\pi` in 64 languages. (zoom)
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Just for kids: 116 digits of `\pi` in 64 languages. (zoom)
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Just for kids: 116 digits of `\pi` in 64 languages. (zoom)
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Just for kids: 116 digits of `\pi` in 64 languages. (zoom)

The posters read out the digits of `\pi` in a variety of languages. For this version of the art, I've selected language digit words that have no diacritical marks—to fit the letters more tightly.

for everybody

Adults shouldn't feel left out—they're free to enjoy the `\pi` Day kids' editions (I know I want to).

However, for the more discerning typographer in you (if Granby Elephant is too bloated for your eyes), I have prepared something slimmer.

These posters spell out the digits of `\pi` in a variety of languages and alphabets. I'll leave you to work out the rule for the red highlights.

The following languages are used: Afrikaans, Ainu, Albanian, Amharic, Arabic, Armenian, Avestan, Azerbaijani, Balinese, Banjar, Bengali, Biblical Arameic, Buginese, Bulgarian, Bumthang, Catalan, Cherokee, Chinese, Cia-cia, Coptic, Czech, Danish, Dothraki, English, Esperanto, Etruscan, Frisian, Galician, Gaulish, Georgian, Georgian Old, Gothic, Greek Old, Gujarati, Hebrew, Hindi, Hopi, Hungarian, Igbo, Inuktitut, Irish, Japanese Sino, Javanese, Kannada, Kazakh, Khmer, Klallam, Korean, Korean Sino, Kyrgyz, Ladan, Ladino, Lao, Latvian, Macedonian, Malagasy, Malay, Malayalam, Mandaic, Mongolian Classical, Myanmar, Norse, Norwegian, Old English, Old Turkic, Pashto, Persian, Phoenician, Proto Germanic, Punjabi, Ro, Romanian, Samaritan, Samoan, Sanskrit, Sesotho, Sindhi, Sinhala, Slavonic, Slovak, Slovenian, Spanish, Sundanese, Swahili, Swedish, Sylheti, Syriac, Tajik, Telugu, Tetun, Thai, Thompson, Turkish, Ugaritic, Urdu, Welsh, Wyandot, Xhosa, Yi, Yiddish, and Yonaguni.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
For everybody: 223 digits of `\pi` in 102 languages. (zoom)
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
For everybody: 351 digits of `\pi` in+ 54 languages. (zoom)

The typeface is Helvetica Neue or Noto Sans.

In another version of the poster, instead of using words to spell out the digits, I use digit glyphs from various alphabets. Included in this version are also any single-glyph words for the digit.

The digit glyph poster uses Adlam, Ainu, Arabic, Balinese, Bengali, Brahmi, Burmese, Chakma, Cham, Chinese, Coptic, Ethiopic, Gujaranti, Gujarati, Gurmukhi, Hebrew, Japanese Sino, Javanese, Kannada, Kayahli, Kharoshthi, Khmer, Klingon, Korean, Koreansino, Lao, Lepcha, Limbu, Malayalam, Meetei Mayek, Mongolian, Nko, Odia, Olchiki, Oriya, Osmanya, Punjabi, Roman, Rumi, Sanskrit, Saurashtra, Shan, Sinhala, Sinhala Archaic, Sumerian, Sundanese, Tamil, Telugu, Thai, Tibetan, Vai, Yi, and Yonaguni.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
For everybody: 351 digits of `\pi` in 54 alphabets. (zoom)

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news + thoughts

Graphical Abstract Design Guidelines

Fri 13-11-2020

Clear, concise, legible and compelling.

Making a scientific graphical abstract? Refer to my practical design guidelines and redesign examples to improve organization, design and clarity of your graphical abstracts.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Graphical Abstract Design Guidelines — Clear, concise, legible and compelling.

"This data might give you a migrane"

Tue 06-10-2020

An in-depth look at my process of reacting to a bad figure — how I design a poster and tell data stories.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
A poster of high BMI and obesity prevalence for 185 countries.

He said, he said — a word analysis of the 2020 Presidential Debates

Thu 01-10-2020

Building on the method I used to analyze the 2008, 2012 and 2016 U.S. Presidential and Vice Presidential debates, I explore word usagein the 2020 Debates between Donald Trump and Joe Biden.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Analysis of word usage by parts of speech for Trump and Biden reveals insight into each candidate.

Points of Significance celebrates 50th column

Mon 24-08-2020

We are celebrating the publication of our 50th column!

To all our coauthors — thank you and see you in the next column!

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Nature Methods Points of Significance: Celebrating 50 columns of clear explanations of statistics. (read)

Uncertainty and the management of epidemics

Mon 24-08-2020

When modelling epidemics, some uncertainties matter more than others.

Public health policy is always hampered by uncertainty. During a novel outbreak, nearly everything will be uncertain: the mode of transmission, the duration and population variability of latency, infection and protective immunity and, critically, whether the outbreak will fade out or turn into a major epidemic.

The uncertainty may be structural (which model?), parametric (what is `R_0`?), and/or operational (how well do masks work?).

This month, we continue our exploration of epidemiological models and look at how uncertainty affects forecasts of disease dynamics and optimization of intervention strategies.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Nature Methods Points of Significance column: Uncertainty and the management of epidemics. (read)

We show how the impact of the uncertainty on any choice in strategy can be expressed using the Expected Value of Perfect Information (EVPI), which is the potential improvement in outcomes that could be obtained if the uncertainty is resolved before making a decision on the intervention strategy. In other words, by how much could we potentially increase effectiveness of our choice (e.g. lowering total disease burden) if we knew which model best reflects reality?

This column has an interactive supplemental component (download code) that allows you to explore the impact of uncertainty in `R_0` and immunity duration on timing and size of epidemic waves and the total burden of the outbreak and calculate EVPI for various outbreak models and scenarios.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Nature Methods Points of Significance column: Uncertainty and the management of epidemics. (Interactive supplemental materials)

Bjørnstad, O.N., Shea, K., Krzywinski, M. & Altman, N. (2020) Points of significance: Uncertainty and the management of epidemics. Nature Methods 17.

Background reading

Bjørnstad, O.N., Shea, K., Krzywinski, M. & Altman, N. (2020) Points of significance: Modeling infectious epidemics. Nature Methods 17:455–456.

Bjørnstad, O.N., Shea, K., Krzywinski, M. & Altman, N. (2020) Points of significance: The SEIRS model for infectious disease dynamics. Nature Methods 17:557–558.

Cover of Nature Genetics August 2020

Mon 03-08-2020

Our design on the cover of Nature Genetics's August 2020 issue is “Dichotomy of Chromatin in Color” . Thanks to Dr. Andy Mungall for suggesting this terrific title.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Dichotomy of Chromatin in Color. Nature Genetics, August 2020 issue. (read more)

The cover design accompanies our report in the issue Gagliardi, A., Porter, V.L., Zong, Z. et al. (2020) Analysis of Ugandan cervical carcinomas identifies human papillomavirus clade–specific epigenome and transcriptome landscapes. Nature Genetics 52:800–810.