In your hiding, you're alone. Kept your treasures with my bones.crawl somewhere bettermore quotes

# typography: exciting

DNA on 10th — street art, wayfinding and font

# art + design

Math geek? If you like the clean geometric design of the type posters, you may enjoy something even more mathematical. Design that transcends repetition: Art of Pi, Phi and e posters.

# Visions of Type

Potato chip! — song of the American Goldfinch (Spinus tristis). (BUY ARTWORK)
Here sweetie. — song of the Black-capped chickadee (Poecile atricapillus). (BUY ARTWORK)

## typography and bird songs

Consider the fact that, if you live in a city, birds are essentially the only wildlife that you meet during your day.

Depending on where you live, you might come several species without even trying. In Vancouver, on my short 10 minute walk to work, I have a good chance to see rock doves, crows, mallars, wigeons, hooded mergansers (if I'm lucky), house sparrows, song sparrows, red-winged black birds, white-crowned sparrows, bushtits, black-capped chickadees, northern flickers, and the mother-of-all-honkers: Canada geese.

Birds and letters are everywhere—art of nature and man.

Letter forms, on the other hand, are the art that is also everywhere. Every typeface is an artistic expression.

Regardless where you live, sadly, you are likely to come across mutants like Comic Sans, Arial and Times New Roman. Hideous creatures from the shallows. Try to find Gotham, Gill Sans, Frutiger, or Garamond.

## learning bird songs

Mnemonics of bird songs help you remember the call and recognize the bird. It's so much easier to think "Quick, three beers!" — the call of the Olive-sided flycatcher — rather than "Chirp, chirp, chirp."

The mnemonic captures the cadence and repetition scheme of the song.

For example, if you listen to the white-throated sparrow you can't help but think that this little guy is trying to tell us something.

## the mnemonics

French Zonotrichia albicollis: Baisse ta jupe, Philomène, Philomène, Philomène. How differently we hear!

White-throated Sparrow (Zonotrichia albicollis)

Potato chip!
American Goldfinch (Spinus tristis)

Here here. Come right here, dear.
Baltimore Oriole (Icterus galbula)

Who cooks for you?
Barred Owl (Strix varia)

Fire fire. Where where? Here here! See it, see it.
Indigo Bunting (Passerina cyanea)

Clear. Wick, wick, wick.
Northern Flicker (Colaptes auratus)

Quick, three beers!
Olive-sided Flycatcher (Contopus cooperi)

Where are you? Here I am.
Red-eyed Vireo (Vireo olivaceus)

Chubby chubby cheeks. Chubby cheeks.
Ruby-crowned kinglet (Regulus calendula)

Here sweetie.

See me, pretty, pretty me.
White-crowned sparrow (Zonotrichia leucophrys)

## the posters

If you love birds and typography, these posters are for you.

The mnemonic for the bird's song is presented on a background that proportionally presents the bird's plumage colors.

If you explore the posters, you just might find the bird too.

Potato chip! — song of the American Goldfinch (Spinus tristis). (BUY ARTWORK)
Here here. Come right here, dear. — song of the Baltimore Oriole (Icterus galbula). (BUY ARTWORK)
Who cooks for you? — song of the Barred Owl (Strix varia). (BUY ARTWORK)
Fire fire. Where where? Here here! See it, see it. — song of the Indigo Bunting (Passerina cyanea). (BUY ARTWORK)
Clear. Wick, wick, wick. — song of the Northern Flicker (Colaptes auratus). (BUY ARTWORK)
Quick, three beers! — song of the Olive-sided Flycatcher (Contopus cooperi). (BUY ARTWORK)
Where are you? Here I am. — song of the Red-eyed Vireo (Vireo olivaceus). (BUY ARTWORK)
Chubby chubby cheeks. Chubby cheeks. — song of the Ruby-crowned kinglet (Regulus calendula). (BUY ARTWORK)
Here sweetie. — song of the Black-capped chickadee (Poecile atricapillus). (BUY ARTWORK)
See me, pretty, pretty me. — song of the White-crowned sparrow (Zonotrichia leucophrys). (BUY ARTWORK)
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# Hola Mundo Cover

Sat 21-09-2019

My cover design for Hola Mundo by Hannah Fry. Published by Blackie Books.

Hola Mundo by Hannah Fry. Cover design is based on my 2013 $\pi$ day art. (read)

Curious how the design was created? Read the full details.

# Markov Chains

Tue 30-07-2019

You can look back there to explain things,
but the explanation disappears.
You'll never find it there.
Things are not explained by the past.
They're explained by what happens now.
—Alan Watts

A Markov chain is a probabilistic model that is used to model how a system changes over time as a series of transitions between states. Each transition is assigned a probability that defines the chance of the system changing from one state to another.

Nature Methods Points of Significance column: Markov Chains. (read)

Together with the states, these transitions probabilities define a stochastic model with the Markov property: transition probabilities only depend on the current state—the future is independent of the past if the present is known.

Once the transition probabilities are defined in matrix form, it is easy to predict the distribution of future states of the system. We cover concepts of aperiodicity, irreducibility, limiting and stationary distributions and absorption.

This column is the first part of a series and pairs particularly well with Alan Watts and Blond:ish.

Grewal, J., Krzywinski, M. & Altman, N. (2019) Points of significance: Markov Chains. Nature Methods 16:663–664.

# 1-bit zoomable gigapixel maps of Moon, Solar System and Sky

Mon 22-07-2019

Places to go and nobody to see.

Exquisitely detailed maps of places on the Moon, comets and asteroids in the Solar System and stars, deep-sky objects and exoplanets in the northern and southern sky. All maps are zoomable.

3.6 gigapixel map of the near side of the Moon, annotated with 6,733. (details)
100 megapixel and 10 gigapixel map of the Solar System on 20 July 2019, annotated with 758k asteroids, 1.3k comets and all planets and satellites. (details)
100 megapixle and 10 gigapixel map of the Northern Celestial Hemisphere, annotated with 44 million stars, 74,000 deep-sky objects and 3,000 exoplanets. (details)
100 megapixle and 10 gigapixel map of the Southern Celestial Hemisphere, annotated with 69 million stars, 88,000 deep-sky objects and 1000 exoplanets. (details)

# Quantile regression

Sat 01-06-2019
Quantile regression robustly estimates the typical and extreme values of a response.

Quantile regression explores the effect of one or more predictors on quantiles of the response. It can answer questions such as "What is the weight of 90% of individuals of a given height?"

Nature Methods Points of Significance column: Quantile regression. (read)

Unlike in traditional mean regression methods, no assumptions about the distribution of the response are required, which makes it practical, robust and amenable to skewed distributions.

Quantile regression is also very useful when extremes are interesting or when the response variance varies with the predictors.

Das, K., Krzywinski, M. & Altman, N. (2019) Points of significance: Quantile regression. Nature Methods 16:451–452.

Altman, N. & Krzywinski, M. (2015) Points of significance: Simple linear regression. Nature Methods 12:999–1000.

# Analyzing outliers: Robust methods to the rescue

Sat 30-03-2019
Robust regression generates more reliable estimates by detecting and downweighting outliers.

Outliers can degrade the fit of linear regression models when the estimation is performed using the ordinary least squares. The impact of outliers can be mitigated with methods that provide robust inference and greater reliability in the presence of anomalous values.

Nature Methods Points of Significance column: Analyzing outliers: Robust methods to the rescue. (read)

We discuss MM-estimation and show how it can be used to keep your fitting sane and reliable.

Greco, L., Luta, G., Krzywinski, M. & Altman, N. (2019) Points of significance: Analyzing outliers: Robust methods to the rescue. Nature Methods 16:275–276.