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The Rapidly Falling Cost of Solar Energy Visualized

posted by Jason Kottke   Dec 02, 2020

Check out this graph from Our World in Data of the price of electricity from new power plants. In 2009, solar was the most expensive energy source and in 2019 it’s the cheapest.

graph showing the plunging cost of solar energy

Electricity from utility-scale solar photovoltaics cost $359 per MWh in 2009. Within just one decade the price declined by 89% and the relative price flipped: the electricity price that you need to charge to break even with the new average coal plant is now much higher than what you can offer your customers when you build a wind or solar plant.

It’s hard to overstate what a rare achievement these rapid price changes represent. Imagine if some other good had fallen in price as rapidly as renewable electricity: Imagine you’d found a great place to live back in 2009 and at the time you thought it’d be worth paying $3590 in rent for it. If housing had then seen the price decline that we’ve seen for solar it would have meant that by 2019 you’d pay just $400 for the same place.

The rest of the page is worth a read as well. One reason why the cost of solar is falling so quickly is that the technology is following a similar exponential curve to computer chips, which provide more speed and power every year for less money, an observation called Wright’s Law:

If you want to know what the future looks like one of the most useful questions to ask is which technologies follow Wright’s Law and which do not.

Most technologies obviously do not follow Wright’s Law — the prices of bicycles, fridges, or coal power plants do not decline exponentially as we produce more of them. But those which do follow Wright’s Law — like computers, solar PV, and batteries — are the ones to look out for. They might initially only be found in very niche applications, but a few decades later they are everywhere.

If you are unaware that technology follows Wright’s Law you can get your predictions very wrong. At the dawn of the computer age in 1943 IBM president Thomas Watson famously said “I think there is a world market for maybe five computers.” At the price point of computers at the time that was perhaps perfectly true, but what he didn’t foresee was how rapidly the price of computers would fall. From its initial niche when there was perhaps truly only demand for five computers they expanded to more and more applications and the virtuous cycle meant that the price of computers declined further and further. The exponential progress of computers expanded their use from a tiny niche to the defining technology of our time.

Solar modules are on the same trajectory, as we’ve seen before. At the price of solar modules in the 1950s it would have sounded quite reasonable to say, “I think there is a world market for maybe five solar modules.” But as a prediction for the future this statement too would have been ridiculously wrong.

Speculation: Scented Candle Ratings Down Due to Covid-19 Loss of Smell

posted by Jason Kottke   Nov 30, 2020

After Terri Nelson noticed people complaining online about a lack of scent from newly purchased scented candles, Kate Petrova analyzed Amazon reviews for candles from the past three years and found a drop in ratings for scented candles beginning in January 2020 (compared to a smaller ratings decline for unscented candles).

graph showing a ratings decline for scented candles since January 2020

The hypothesis is that some of these buyers have lost their sense of smell due to Covid-19 infections and that’s showing up in the ratings.

Tracking Pre-Pandemic “Lasts” and Post-Lockdown “Firsts”

posted by Jason Kottke   Nov 24, 2020

Giorgia Lupi's hand-drawn 2020 timeline

For the print version of the NY Times from this past Sunday, information designer Giorgia Lupi created a hand-drawn visualization that “tracks the last time [she] did something before the pandemic hit, and the first time she did something new with social distancing”.

Our lives have been transformed during the Covid-19 pandemic as the activities we used to do every day have been put on hold and new, socially distanced routines have taken their place. Pentagram partner Giorgia Lupi documents these changes in her own life in a data visualization commissioned by The New York Times for the cover of its “At Home” section, which runs as part of the newspaper’s Sunday edition. The hand-drawn visualization is a personal timeline that tracks the “last” time Giorgia did something before the pandemic hit, and the “first” time she did something new as she started to emerge from lockdown.

Not hand-drawn, but I remember pretty clearly what my lasts were:

I don’t remember my firsts as well, although one that sticks out is eating french fries (take-out) in July. On a normal day, french fries are delicious but when you haven’t had them in months, they are otherworldly.

The Best Maps & Charts from the 2020 Election

posted by Jason Kottke   Nov 18, 2020

From Stamen’s lead cartographer Alan McConchie, an excellent review of the charts and maps that best communicated vital information about the 2020 election.

After the first night of election results was over, and most of the state races had been called, we settled in for several more days of vote counting in a few key states. Dynamic “choose your own adventure” maps and scenario modeling tools became much less useful, and the landscape of the remaining Electoral College outcomes could be explained better without a map or a chart at all. Simple infographics like this one from the BBC did an excellent job of telling the reader all they needed to know.

You should dig into the article for the commentary and analysis, but I did want to share a couple of my favorite maps/charts:

Maps 2020 Election

Maps 2020 Election

Maps 2020 Election

The graphs by John Harurum in that last image were especially useful for me in seeing how the counting trends were going.

The Swiss Cheese Covid-19 Defense

posted by Jason Kottke   Nov 16, 2020

The Swiss cheese respiratory virus pandemic defense

The Swiss cheese model of accident causation is a framework for thinking about how to layer security measures to minimize risk and prevent failure. The idea is that when several layers of interventions, despite their weaknesses, are properly stacked up between a hazard and a potentially bad outcome, they are able to cumulatively prevent that outcome because there’s no single point of failure. During the pandemic, health care workers and public health officials have been using the Swiss cheese model to visualize how various measures can work together to help keep people safe.

Virologist Dr. Ian Mackay has visualized the Swiss cheese Covid-19 defense in a wonderful way (pictured above). Each layer of cheese represents a personal or shared intervention — like mask wearing, limiting your time indoors w/ crowds, proper ventilation, quarantine, vaccines — and the holes are imperfections. Applied together, these imperfect measures work like a filter and can vastly improve chances of success.1 He even added a “misinformation mouse” chewing through one of the cheese slices to represent how deceptive information can weaken these defenses.

Mackay has released this graphic under a Creative Commons license (free to share and adapt w/ attribution) and is available in English, German, French, Spanish, Korean, and several other languages. (via @EricTopol)

  1. It’s interesting that the Swiss cheese model is physically how masks work to stop aerosols and droplets — like layered filters and not sieves.

Visualizing How Covid-19 Spreads Indoors

posted by Jason Kottke   Oct 29, 2020

Visualization of how Covid-19 spreads in a bar via aerosols

From El Pais, this is an excellent visualization of how Covid-19 spreads indoors via aerosols and what can be done to limit that spread. They go through simulations of three different indoor scenarios that are based on actual events — in a home with friends, in a bar at 50% capacity, and in a classroom — and see what happens when differing levels of precautions are applied: masks, ventilation, and limiting exposure time.

Six people get together in a private home, one of whom is infected. Some 31% of coronavirus outbreaks recorded in Spain are caused by this kind of gathering, mainly between family and friends.

Irrespective of whether safe distances are maintained, if the six people spend four hours together talking loudly, without wearing a face mask in a room with no ventilation, five will become infected, according to the scientific model explained in the methodology.

If face masks are worn, four people are at risk of infection. Masks alone will not prevent infection if the exposure is prolonged.

The risk of infection drops to below one when the group uses face masks, shortens the length of the gathering by half and ventilates the space used.

In all three scenarios, note that distancing is largely irrelevant when people gather indoors for longer periods in poorly ventilated areas. From the school example:

In real outbreaks, it has been noted that any of the students could become infected irrespective of their proximity to the teacher as the aerosols are distributed randomly around the unventilated room.

The only thing that’s disappointing about this piece is that it does not stress enough that finding alternatives to indoor activities with lots of people is the much safer course of action than just cracking a window or masking up. Safety step #1 is still being smart about non-essential activities — masks and ventilation are not magically going to protect you during risky activities. Educating our children is important and difficult (though not impossible) to do outside in many places, so yeah, let’s mask up and ventilate those classrooms. But your indoor birthday party with 10 friends or Thanksgiving dinner with the cousins and grandparents? Or dining out in a room full of strangers at a restaurant? Even with masks and ventilation, it’s not a great idea. Scale it down, move it to Zoom/FT, hold it outdoors (distanced, masked), or just skip it.

An Interface for Exploring Ed Ruscha’s Sunset Boulevard Street Views

posted by Jason Kottke   Oct 21, 2020

interface to view Ed Ruscha's Sunset Boulevard photos

Since 1965, American artist Ed Ruscha has been taking photos all along the length of Sunset Boulevard in LA. The Getty has made those photos available on the Getty Research Institute website and Stamen Design built this fantastic interface called 12 Sunsets for virtually cruising up and down the street.

This is so much fun to play with! You can use the mouse or arrow keys to drive, the spacebar to flip to the other side of the street, and you can change or add years to the display. It’s really interesting to add a bunch of different years to the display and then motor up and down the street to see what’s changed over the decades. It’s the perfect interface for this art.

Edward Tufte’s New Book: Seeing with Fresh Eyes

posted by Jason Kottke   Oct 09, 2020

Data visualization pioneer Edward Tufte has published four books on the art and science of displaying information, including the seminal The Visual Display of Quantitative Information in 1983. To that set, he now adds a fifth book: Seeing with Fresh Eyes: Meaning, Space, Data, Truth. I couldn’t find a description of the book, but the website lists the table of contents and shows a few of the page layouts.

Seeing with Fresh Eyes

Seeing with Fresh Eyes

His previous four books are some of my favorites about design. You can only order Seeing with Fresh Eyes direct from his site, which says the book is shipping in mid-October. (thx, dewayne)

Turning Stock Charts into Landscape Art

posted by Jason Kottke   Aug 19, 2020

Turning Stock Charts into Landscape Art

Turning Stock Charts into Landscape Art

Turning Stock Charts into Landscape Art

Inspired by the charts on Robinhood and Yahoo Finance, Gladys Orteza is turning the charts of notable stocks into landscape artworks, inserting references to the company into the art. The Ford chart at the top has a truck, the Tesla chart features a rocket (a reference to SpaceX), and the Disney one includes the twin suns of Tatooine & a Jawa Sandcrawler.

Reminds me of Michael Najjar’s High Altitude series (stock market charts represented by jagged Andean mountain peaks) and Jill Pelto turning climate change graphs into art. (via waxy)

The Winners of the Malofiej International Infographics Awards for 2020

posted by Jason Kottke   Aug 04, 2020

Malofiej Awards 2020

Malofiej Awards 2020

Malofiej have announced their 28th International Infographics Awards for 2020, which they refer to as “the Pulitzers for infographics”. You can check out some of the top infographics here, culled from newspapers, magazines, and online media from around the world. The full list is available here, complete with links to the online winners.

A Time Lapse World Map of Every Covid-19 Death

posted by Jason Kottke   Jul 08, 2020

From January to the end of June, over 500,000 people died of confirmed cases of Covid-19. In order to demonstrate the magnitude of the pandemic, James Beckwith made a time lapse map of each Covid-19 death.

Each country is represented by a tone and an expanding blip on the map when a death from Covid-19 is recorded. Each day is 4 seconds long, and at the top of the screen is the date and a counter showing the total numbers of deaths. Every country that has had a fatality is included.

As was the case with the pandemic, the video starts slow but soon enough the individual sounds and blips build to a crescendo, a cacophony of death. The only way this could be made more ominous & upsetting is by including the first song off of Cliff Martinez’s Contagion soundtrack as a backing track. As Beckwith notes in the description: “It is likely a sequel will need to be made.” (via open culture)

Japanese Aquariums’ Flowchart of Penguin Relationships

posted by Jason Kottke   Jul 07, 2020

Penguin Love Flowchart

A pair of aquariums in Japan have published flowcharts that track the relationships of their penguins.

Penguins, the way they waddle around and protect their eggs, are often thought of as cute, cuddly and romantic. But those who observe them for extended periods know they have a dark side. Two aquariums in Japan, Kyoto Aquarium and Sumida Aquarium, keep obsessive tabs on their penguins and maintain an updated flowchart that visualizes all their penguin drama.

As Kyoto-based researcher Oliver Jia points out, penguin drama can include serious crushes and heartbreaks but also adultery and egg-stealing. And these Japanese aquariums have it all charted in a flowchart that can be studied for hours.

(via @pomeranian99)

The 1850s Map that Made Modern Epidemiology

posted by Jason Kottke   Jun 18, 2020

In 1854, Dr. John Snow produced a map of a London cholera outbreak which showed deaths from the disease concentrated around a water pump on Broad Street. The prevailing view at the time was that cholera spread through dirty air, but Snow hypothesized that it was actually spread through water and constructed this early medical data visualization to help prove it.

John Snow Cholera Map

Through a mix of personal interviews, clever detective work, and data analysis that included tables and a famous map, Snow managed to stop the outbreak and convince local public health officials, eventually, that cholera could be transmitted through water, not a miasma. Since his breakthrough study, the map has become an iconic piece of epidemiological history, as an illustration of keen detective work, analysis, and visual representation with a map that, even today, tells a story.

Aside from the cluster of deaths around the pump (which could be argued were the result of a miasma cloud and not contaminated water), stories of nearby people who didn’t get sick (brewers who drank the beer they produced rather than well water, people in buildings with their own wells) and far away people who died because they had drunk water from the well were also essential in proving his theory:

I was informed by this lady’s son that she had not been in the neighbourhood of Broad Street for many months. A cart went from broad Street to West End every day and it was the custom to take out a large bottle of the water from the pump in Broad Street, as she preferred it. The water was taken on Thursday 31st August., and she drank of it in the evening, and also on Friday. She was seized with cholera on the evening of the latter day, and died on Saturday

You can read more about John Snow and how his map changed science and medicine in Steven Johnson’s excellent Ghost Map.

The Atlantic Slave Trade in Two Minutes

posted by Jason Kottke   Jun 16, 2020

For Slate’s 2015 podcast series The History of American Slavery, Andrew Kahn created an interactive visualization of the 20,000+ voyages that made up the Atlantic slave trade that lasted 315 years. A video of the interactive map is embedded above.

As we discussed in Episode 2 of Slate’s History of American Slavery Academy, relative to the entire slave trade, North America was a bit player. From the trade’s beginning in the 16th century to its conclusion in the 19th, slave merchants brought the vast majority of enslaved Africans to two places: the Caribbean and Brazil. Of the more than 10 million enslaved Africans to eventually reach the Western Hemisphere, just 388,747 — less than 4 percent of the total — came to North America. This was dwarfed by the 1.3 million brought to Spanish Central America, the 4 million brought to British, French, Dutch, and Danish holdings in the Caribbean, and the 4.8 million brought to Brazil.

Roughly 400,000 enslaved Africans were brought to the United States before the practice was banned in 1808. The ban was mostly (but not entirely) enforced and yet in 1860, the population of enslaved persons was almost 4 million in the South. That’s because the 1808 ban, according to Ned & Constance Sublette’s book The American Slave Coast: A History of the Slave-Breeding Industry, was a form of trade protectionism that protected the forced breeding of enslaved peoples by American slaveowners. From a review of the book:

In fact, most American slaves were not kidnapped on another continent. Though over 12.7 million Africans were forced onto ships to the Western hemisphere, estimates only have 400,000-500,000 landing in present-day America. How then to account for the four million black slaves who were tilling fields in 1860? “The South,” the Sublettes write, “did not only produce tobacco, rice, sugar, and cotton as commodities for sale; it produced people.” Slavers called slave-breeding “natural increase,” but there was nothing natural about producing slaves; it took scientific management. Thomas Jefferson bragged to George Washington that the birth of black children was increasing Virginia’s capital stock by four percent annually.

Here is how the American slave-breeding industry worked, according to the Sublettes: Some states (most importantly Virginia) produced slaves as their main domestic crop. The price of slaves was anchored by industry in other states that consumed slaves in the production of rice and sugar, and constant territorial expansion. As long as the slave power continued to grow, breeders could literally bank on future demand and increasing prices. That made slaves not just a commodity, but the closest thing to money that white breeders had. It’s hard to quantify just how valuable people were as commodities, but the Sublettes try to convey it: By a conservative estimate, in 1860 the total value of American slaves was $4 billion, far more than the gold and silver then circulating nationally ($228.3 million, “most of it in the North,” the authors add), total currency ($435.4 million), and even the value of the South’s total farmland ($1.92 billion). Slaves were, to slavers, worth more than everything else they could imagine combined.

You can read more about the economics of slavery in this post from 2016, including how American banks sold bonds that used enslaved persons as collateral to international investors. (via open culture)

If NYC Were 100 People…

posted by Jason Kottke   Jun 15, 2020

Using census data (which she acknowledges can be imperfect in capturing the full range of people’s identities), data scientist/artist Mona Chalabi created a drawing of 100 people who are representative of NYC’s population for a NY Times opinion piece on inequality and coronavirus.

100 New Yorkers

Chalabi writes on Instagram:

When you think about who is most affected by Covid-19, you need to consider inequalities in housing, in access to healthcare, in wealth. And so much of that ends up consistently affecting people of color. You could think of it as overlapping circles in a Venn diagram. Or, you could look at these 100 people.

She’s selling prints of this on her website (pink background, black background), with all profits going towards a Covid-19 rent relief fund for families organized by The Conscious Kid.

See also If Only 100 People Lived on Earth…

Meander Maps for Imaginary Rivers

posted by Jason Kottke   May 18, 2020

Robert Hodgin Meander Maps

Robert Hodgin Meander Maps

Robert Hodgin Meander Maps

I have written previously about cartographer Harold Fisk’s wonderful meander maps of the Mississippi River produced for the Army Corps of Engineers. Borrowing the aesthetic of these maps, interactive artist & engineer Robert Hodgin wrote some software called Meander to generate meander maps for fictional rivers.

From an input curve, the terrain, land plots, side roads, highways, marsh land and mountain peaks are generated and prominent features are named. The map is then weathered and rendered in the style of old US Army Corp of Engineers maps from the 1930s and 40s.

You can check some of the generated maps out on Twitter or on Instagram, including some prototypes and animations (this one is my favorite). Hodgin has promised a full write-up of the project; I’ll link to it when he publishes it.

Coincidentally, while I was writing this post I got an email from a reader about an audiovisual installation called Meandering River that displayed “real-time visuals generated by an algorithm and music composed by an A.I.”

Synchronicity!

Update: Hodgin wrote about the Meander project on his website and included several more gorgeous examples of his output.

Top 15 Countries By Military Spending (1914-2018)

posted by Jason Kottke   Apr 24, 2020

Using data from the Correlates of War Project and the Stockholm International Peace Research Institute, this bar chart race shows the annual military spending of the world’s top spending countries from the start of WWI in 1914 to 2018. See also military spending info from Our World in Data.

Covid-19 Now the Leading Cause of Death in America

posted by Jason Kottke   Apr 10, 2020

This week, Covid-19 passed heart disease and cancer as the leading cause of death per day in the United States. In this graph made by Dr. Maria Danilychev using data from Worldometer and the CDC, you can see that Covid-19 overtook heart disease sometime on Monday or Tuesday.

If the data in NYC is any indication, the number of nationwide Covid-19 deaths may be undercounted, so this transition probably happened sooner.1 Hopefully through the social distancing and other measures put in place to flatten the curve, the number of daily Covid-19 deaths won’t start beating out all other causes combined before it starts declining.

  1. Several months from now, it will be easier to get a more accurate count of how many people died by looking at the “baseline” rate of death and comparing it with the actual numbers. Unless this sort of recount is politicized, which it will be, and *siiiigh*

The Pandemic Has Driven Twitter to New Lows in Happiness

posted by Jason Kottke   Apr 07, 2020

Since 2008, the Hedonometer has been tracking the language we use on Twitter to assign a daily score that measures how collectively happy we are (English tweets only). From the data, you can see that happiness spikes on holidays & after notable news events (same-sex marriage legalization) and unhappiness follows mass shootings, terrorist events, and Trump’s election. But the Covid-19 pandemic has brought Twitter’s collective happiness rating to an overall new low and its first sustained period of unhappiness.

Twitter Happy Pandemic

The day they identify as the unhappiest is March 12, 2020, which is the day after Americans finally took Covid-19 seriously. Within the space of a few hours on March 11, the NBA announced it was suspending its season, Tom Hanks revealed that he and his wife Rita Wilson had Covid-19, the WHO declared Covid-19 a pandemic, Donald Trump went on primetime TV to address the nation, and the DJIA closed down 1400 points (it would drop another 2350 points on Mar 12).

See also the previous low point after the Las Vegas shootings and my initial post on the Hedonometer from July 2016. In that initial post, I shared a hunch that Twitter’s happiness seemed to have reached a peak in early 2016. With four years of additional data, it’s obvious that the happiness peaked in late 2015 or early 2016 (at least according to their methodology).

Twitter Happy Overall

Cellphone Data Shows How Quickly Partying Spring Breakers Spread Across the Country

posted by Jason Kottke   Mar 29, 2020

People on Spring Break in Florida for the past couple of weeks were famously unconcerned with social distancing measures implementing in other areas of the country to help stem the tide of COVID-19 infections and save lives. Using cellphone location data from just the phones of the people gathered on a single beach in Fort Lauderdale, Florida, this video shows just how far those people spread across the country when they went home, possibly taking SARS-CoV-2 with them. They go everywhere.

Show of hands: who feels uncomfortable being reminded of the extent to which 3rd party companies know the location of our cellphones? With tools like the one demonstrated in the video & other easily available info, it has to be trivial to identify individuals by name using even “randomized” data and so-called metadata. (via @stewartbrand)

Visualizing the History of Pandemics

posted by Jason Kottke   Mar 19, 2020

Visualize Pandemics

From Nicholas LePan, Visualizing the History of Pandemics.

The practice of quarantine began during the 14th century, in an effort to protect coastal cities from plague epidemics. Cautious port authorities required ships arriving in Venice from infected ports to sit at anchor for 40 days before landing — the origin of the word quarantine from the Italian “quaranta giorni”, or 40 days.

One of the first instances of relying on geography and statistical analysis was in mid-19th century London, during a cholera outbreak. In 1854, Dr. John Snow came to the conclusion that cholera was spreading via tainted water and decided to display neighborhood mortality data directly on a map. This method revealed a cluster of cases around a specific pump from which people were drawing their water from.

While the interactions created through trade and urban life play a pivotal role, it is also the virulent nature of particular diseases that indicate the trajectory of a pandemic.

One of my big takeaways from the Tracking Infectiousness section of the piece is: holy shit, look at how contagious measles is! An R0 of 16! (The common flu is about 1.5 and ebola is 2.0.) And people want to keep their children from getting vaccinated for this?!

The Power of the Individual in an Exponential Crisis

posted by Jason Kottke   Mar 16, 2020

Over the past week or so, echoing public health officials & epidemiologists, I’ve been trying to illustrate the often counterintuitive concept of exponential growth that you see in an epidemic and how flattening the curve can help keep people healthy and alive. But I think people have a hard time grasping what that means, personally, to them. Like, what’s one person in the face of a pandemic?

Well, epidemiologist Britta Jewell had a similar thought and came up with this brilliantly simple graph, one of the best I’ve seen in illustrating the power of exponential growth and how we as individuals can affect change:

One Person Exponential

Jewell explains a bit more about what we’re looking at:

The graph illustrates the results of a thought experiment. It assumes constant 30 percent growth throughout the next month in an epidemic like the one in the U.S. right now, and compares the results of stopping one infection today — by actions such as shifting to online classes, canceling of large events and imposing travel restrictions — versus taking the same action one week from today.

The difference is stark. If you act today, you will have averted four times as many infections in the next month: roughly 2,400 averted infections, versus just 600 if you wait one week. That’s the power of averting just one infection, and obviously we would like to avert more than one.

So that’s 1800 infections averted from the actions of just one person. Assuming a somewhat conservative death rate of 1% for COVID-19, that’s 18 deaths averted. Think about that before you head out to the bar tonight or convene your book group as usual. Your actions have a lot of power in this moment; take care in how you wield it.

Linguistic Constellations

posted by Jason Kottke   Mar 04, 2020

Linguistic Constellations

Linguistic Constellations

Illustrator Jerry M. Wilson has drawn a series of constellations that explore the etymology of the constellations’ names and related words in several languages. So for example, “Taurus” is Latin for “bull”, which is “toro” in Spanish & Italian and “tyr” in Danish. And then you also have associated words like “toreador” (“bullfighter” in Spanish) and “teurastamo” (Finnish for “slaughterhouse”)…a constellation of words related to “Taurus”.

Cycling Through All the Streets of London

posted by Jason Kottke   Mar 02, 2020

Over a period of four years, Davis Vilums cycled every street in central London. A map and a time lapse of his journeys:

London Cycle Map

Including some irregular times off, overall it took me four years to visit every single road on the map. When I started this hobby, it took me 30 to 40 minutes to do the route. Later it expanded to 2 hours to get to the office when I tried to reach the furthest places on my map. One of the main goals was never to be late for work. From the beginning, I planned to visit not only the main roads but every single accessible mews, yard, park trail, and a path that was possible to go through. I used Endomondo app to have a proper record of my journeys and proof that I have been there. After every trip, I prepared my next route in Google maps where it was easy to adjust streets to the next ones and mark points to revisit if I missed something.

Marshall Islands Navigation Charts

posted by Jason Kottke   Feb 28, 2020

Marshall Islands Navigation Chart

Marshall Islands Navigation Chart

Marshall Islands Navigation Chart

Marshall Islands Navigation Chart

The arrangement of the sticks in these Marshall Islands navigational charts represents ocean swells & currents and how they interact with the land, useful information for navigating between islands via canoe. From a Smithsonian Magazine article about these charts:

The chart is less a literal representation of the sea, says museum curator and anthropologist Adrienne Kaeppler, and more an abstract illustration of the ways that ocean swells interact with land. Curved sticks, she explains, show where swells are deflected by an island; short, straight strips often indicate currents near islands; longer strips “may indicate the direction in which certain islands are to be found;” and small cowry shells represent the islands themselves.

The stick charts were preparatory & teaching tools — mariners would memorize the charts before heading out to sea rather than take them along on the boat.

The photos above are from the Smithsonian Institution, courtesy of Flickr.

See also Secrets of the Wave Pilots and other physical data visualizations. (via curationist)

Time Lapse Visualization of How 10 Satellites Build a Daily Global Precipitation Map

posted by Jason Kottke   Feb 24, 2020

The first 30 seconds of this time lapse video provides a great look into how the 10 satellites that make up the Global Precipitation Measurement Constellation scan the surface of the Earth to provide daily global precipitation maps.

This visualization shows the constellation in action, taking precipitation measurements underneath the satellite orbits. As time progresses and the Earth’s surface is covered with measurements, the structure of the Earth’s precipitation becomes clearer, from the constant rainfall patterns along the Equator to the storm fronts in the mid-latitudes. The dynamic nature of the precipitation is revealed as time speeds up and the satellite data swaths merge into a continuous visualization of changing rain and snowfall.

The Sleep Blanket

posted by Jason Kottke   Feb 12, 2020

Over a period of three months, Seung Lee knit a blanket showing a visualization of his infant son’s sleep patterns from birth to his first birthday.

Sleep Blanket

The sleep data was collected with the BabyConnect app which lets you export to CSV. The CSVs were filtered and converted into JSON (using Google Apps Script and Python) which could then be used for visualization and tracking.

Brilliant. This deservedly made Flowing Data’s list of the Best Data Visualization Projects of 2019. See also Global Warming Blankets and this train delay scarf.

How to Please Elise

posted by Jason Kottke   Jan 19, 2020

How to Please Elise

Christoph Niemann with a clever take on the Beethoven composition for piano, Für Elise. He’s offering it as a letterpress print — but supplies are low so order quick if you want one.

And according to Niemann, the chart has been factchecked and is accurate.

Ridgeline Maps of the World

posted by Jason Kottke   Jan 08, 2020

Ridgeline Map Italy

Using Andrei Kashcha’s Peak Map tool, you can create what’s called a ridgeline chart — picture the album cover for Joy Division’s Unknown Pleasures — of the elevation anywhere on the Earth. Try it out here. (via @eramirez)

Flowing Data’s Best Data Visualizations of 2019

posted by Jason Kottke   Jan 07, 2020

Nathan Yau of Flowing Data picked his ten favorite data visualization projects for 2019. All the projects listed are worth a look … but maybe, just maybe, this post is really just an excuse to let my eyes feast upon Scott Reinhard’s historic topographic maps once again.

Scott Reinhard

Designer Scott Reinhard takes old geological survey maps and combines them with elevation data to produce these wonderful hybrid topographic maps. From top to bottom, here are Reinhard’s 3D versions of a 1878 USGS Yellowstone map, a 1904 USGS map of Acadia National Park, and a 1899 USGS map of the Grand Tetons.