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DNA on 10th — street art, wayfinding and font


communication + science

Nature Methods: Points of View

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Points of View column in Nature Methods. (Points of View)
1 | Krzywinski M 2016 Intuitive design Nat Methods 13:895.
2 | Krzywinski M 2016 Binning high-resolution data Nat Methods 13:463.
3 | Hunnicutt BJ & Krzywinski M 2016 Neural circuit diagrams Nat Methods 13:189.
4 | Hunnicutt BJ & Krzywinski M 2016 Pathways Nat Methods 13:5.
5 | McInerny G & Krzywinski M 2015 Unentangling complex plots Nat Methods 12:591.
6 | Streit M & Gehlenborg N 2015 Temporal Data Nat Methods 12:97.
7 | Lex A & Gehlenborg N 2014 Sets and Intersections Nat Methods 11:778.
8 | Streit M & Gehlenborg N 2014 Bar charts and box plots Nat Methods 11:117.
9 | Krzywinski M & Cairo A 2013 Storytelling Nat Methods 10:687.
10 | Krzywinski M & Savig E 2013 Multidimensional Data Nat Methods 10:595.
11 | Krzywinski M & Wong B 2013 Plotting symbols Nat Methods 10:451.
12 | Krzywinski M 2013 Elements of visual style Nat Methods 10:371.
13 | Krzywinski M 2013 Labels and callouts Nat Methods 10:275.
14 | Krzywinski M 2013 Axes, ticks and grids Nat Methods 10:183.
15 | Wong B 2012 Visualizing biological data Nat Methods 9:1131.
16 | Wong B & Kjaegaard RS 2012 Pencil and paper Nat Methods 9:1037.
17 | Gehlenborg N & Wong B 2012 Power of the plane Nat Methods 9:935.
18 | Gehlenborg N & Wong B 2012 Into the third dimension Nat Methods 9:851.
19 | Gehlenborg N & Wong B 2012 Mapping quantitative data to color Nat Methods 9:769.
20 | Nielsen C & Wong B 2012 Representing genomic structural variation Nat Methods 9:631.
21 | Nielsen C & Wong B 2012 Managing deep data in genome browsers Nat Methods 9:521.
22 | Nielsen C & Wong B 2012 Representing the genome Nat Methods 9:423.
23 | Gehlenborg N & Wong B 2012 Integrating data Nat Methods 9:315.
24 | Gehlenborg N & Wong B 2012 Heat maps Nat Methods 9:213.
25 | Gehlenborg N & Wong B 2012 Networks Nat Methods 9:115.
26 | Shoresh N & Wong B 2012 Data exploration Nat Methods 9:5.
27 | Wong B 2011 The design process Nat Methods 8:987.
28 | Wong B 2011 Salience to relevance Nat Methods 8:889.
29 | Wong B 2011 Layout Nat Methods 8:783.
30 | Wong B 2011 Arrows Nat Methods 8:701.
31 | Wong B 2011 Simplify to clarify Nat Methods 8:611.
32 | Wong B 2011 Avoiding color Nat Methods 8:525.
33 | Wong B 2011 Color blindness Nat Methods 8:441.
34 | Wong B 2011 The overview figure Nat Methods 8:365.
35 | Wong B 2011 Typography Nat Methods 8:277.
36 | Wong B 2011 Points of review (part 2) Nat Methods 8:189.
37 | Wong B 2011 Points of review (part 1) Nat Methods 8:101.
38 | Wong B 2011 Negative space Nat Methods 8:5.
39 | Wong B 2010 Gestalt principles (part 2) Nat Methods 7:941.
40 | Wong B 2010 Gestalt principles (part 1) Nat Methods 7:863.
41 | Wong B 2010 Salience Nat Methods 7:773.
42 | Wong B 2010 Design of data figures Nat Methods 7:665.
43 | Wong B 2010 Color coding Nat Methods 7:573.
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news + thoughts

Hola Mundo Cover

Sat 21-09-2019

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

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
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.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
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.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
3.6 gigapixel map of the near side of the Moon, annotated with 6,733. (details)
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
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)
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
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)
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
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?"

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
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.

Background reading

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.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
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.

Background reading

Altman, N. & Krzywinski, M. (2016) Points of significance: Analyzing outliers: Influential or nuisance. Nature Methods 13:281–282.