Transit map–style scientific figures

A good map is geographically accurate and to scale, right?

Not always. Transit maps are one exception. They are intentionally distorted in order to be information dense, yet clean, spacious, and organised.

Many of the design decisions that go into a transit map also apply to scientific figures. There’s a lot for us scientists to learn from a careful look at transit maps.

A typical transit map: Singapore

Singapore's official transit map
Singapore’s transit map.
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Grey and one other colour: a foolproof colour scheme for scientists

How many colours do you need to visualise data scored on a five-point scale?


Data from here.

If you went with the obvious answer of five colours, here’s what you get:


The green and grey figure wins in two ways. First, it tells a story: about a third of respondents view Wikipedia favourably. (Although there are other interpretations of the data shown, a good figure emphasises a single message.) Second, the grey and green version just looks better.

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Embracing minimalism when presenting science

Everything should be made as simple as possible, but no simpler said Einstein. Except, he didn’t. His version of the quote was four times longer.

I’m not surprised that it took a non scientist to paraphrase and create the short, popular version. As scientists, we are not accustomed to brevity. We want to provide every detail. We read papers filled with columns of 10pt text. We construct figures with dozens of lines and colours. We spare no bit of white space when we design posters. And don’t get me started on logos for scientific campaigns (long story short: too many elements, too many colours, and too literal).

We lack minimalism.

You may argue that detail, nuance, and chains of logic—hallmarks of science—are not easily reduced to 280 characters or a sexy soundbite. I don’t disagree. But there are still aspects of minimalism we should embrace.

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Don’t start paragraphs with Figure n shows …

This article is going to describe … would be a terrible opening for this article. It’s six words that convey nothing. You already know this is an article, and you already know that it’s going to describe something. We don’t see this, fortunately, because the importance of a strong and compelling opening sentence is well recognised. At the paragraph level, however, it’s easy to forget the importance of the first sentence. In scientific cases, a symptom of poor or lazy writing is opening a paragraph with Figure n shows.

When it comes to visualising your data, the most important question to ask yourself is what’s your point. Wording a paragraph by starting with Figure n shows will not convey the point. It tells me what you did, but not why I should care. Using this phrase would be like putting the Methods section of a scientific paper before the Introduction.

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Scientific software skills make up for minimal artistic talent

A computer is a better artist than I am. If I can tell it what to draw, it will produce attractive results. To make a nice schematic, the hardest part is to tell the computer what I want to draw. Fortunately for us so-called left-brain types prevalent throughout the sciences, a familiarity with scientific software can overcome a lack of artistic talent, allow rapid iteration of a design, and even provide creative inspiration.

Invoking my scientific software skills, I am able to produce elegant figures:

From Evolution of the velocity structure in the diurnal warm layer

Now, compare that with my initial sketch…


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