Foursquare, which I thought was still a location sharing app but is a data platform now, open sourced a layer of 100 million points of interest in an effort to build and maintain a global database:

[L]et’s now consider the challenge of creating and maintaining a real-world-synced place database. As our CTO Vikram Gundeti detailed in a recent blog on our newly re-launched Place Engine, to do this well requires an operating system powered by human-in-the-loop confirmations harmoniously orchestrated with cutting edge digital discovery systems to actively curate a database representative of the current world. In short, building an accurate global database of POI is an extraordinarily difficult task both from a technical perspective and from a capital resource perspective.

This leads to our belief that, absent a global proprietary distribution platform like Google Maps, building a comprehensive and accurate base layer of place data is indeed a problem best solved by an open source community.

You can access the dataset now.

Speaking of data blankets, the knitting club in the area I live has an annual tradition of making sweaters for trees in their downtown. One of the trees was wrapped with a temperature blanket.

Each color corresponds to a temperature range. Each knitted row reflects the high temperature for each day throughout the past year. The bottom starts with September 1, 2023.

Let’s get more data into the physical world.

Jesse Gwinn, from NOAA, was at sea on a mapping expedition and to pass the downtime between tasks, she crocheted a bathymetry blanket:

I assigned 11 colors to different depth ranges: reds and yellows for shallower waters (~2,000-4,000 meters/1.2-2.5 miles), blues and purples for deeper areas (~4,000-6,000 meters/2.5-3.7 miles). Each vertical row contains two colors, illustrating the deepest and shallowest points recorded in a 6-hour period. The relative location of the color change is positioned to represent the average depth of the seafloor for that timeframe. […] The finished blanket contains 97 rows, representing 582 hours (a little more than 24 days) worth of bathymetry data collected using multibeam sonar.

Bluesky firehose fun continues. Jared Short shows emoji usage as rain drops that fall down the screen. Larger drops represent longer posts.

Or, if the Matrix aesthetic is your thing, Short did that too:

To demonstrate how easy and cheap it is to access the Bluesky firehose, Final Words listens for deletion events and lets them fly and vanish from existence.

Bluesky has a relatively easy-to-use firehose that lets you dip into the stream of events through the platform. Theo Sanderson made this tunnel view to immerse yourself in the stream of consciousness composed by Bluesky users.

This is feeling a lot like early Twitter, which makes me think we should enjoy it while it lasts.

For the New York Times, Mira Rojanasakul visualized annual participation in the United Nations Climate Change Conference, which has been running every year since 1995.

If you think of the numbers as a proxy for the nations that care about climate change, things don’t look great for North America, but the shifts also provide a window into the politics of caring.

The New York Times used swooping arrows to show vote swings left and right for the 2016, 2020, and 2024 elections. A shift left makes the section of an arrow blue, and a shift right makes a section of the arrow red. They show these arrows for demographic groups, too, which have static sizes, but the map above scales the arrows for electoral votes.

I was trying to figure out where I saw this method before. Then I saw it:

More specifically, the wordless version:

Then I had to eat lunch.

For the Minnesota Star Tribune, Yuqing Liu and C.J. Sinner show how the margin of victory changed each presidential election in Minnesota. Each bubble represents a county, size shows total votes, and diverging color scale represents the margin of victory for Democrat and Republican.

My affinity for force-directed bubbles contractually requires that I share this.

This week we look at connecting multiple charts explicitly and implicitly to provide a cohesive narrative or visual metaphor around a dataset.

For The Pudding, David Mora and Michelle Jia examine the death of the love song, or rather, the evolution of the love song to include other types alongside the sappy and puppy dog types.

Each bubble represents a song, and bubble size represents the number of weeks each song spent in the Billboard Top 10. Then they go back and forth between the bubble view above, beeswarm charts, and an alluvial diagram below.

FD readers will likely be interested in the footnotes at the end of the piece. There are notes on methodology, song classification, and a link to download the data.

The Pudding has been publishing at a rapid pace these past couple months. It’s quite a treat.

Bluesky, maybe best pitched as a place for those who liked Twitter and Google Reader more than a decade ago, is having a moment right now. You can find me there.

It’s always hard for these things to maintain momentum, but we’ll see. The shift feels real this time. A good portion of the visualization community is over there, and some, like me, are rediscovering social media.

Sky Follower Bridge is a useful plugin for Chrome and Firefox to find the people you used to follow on X.

Hope to see you there.

With what is now a common mapping method, The Economist used a dot density map to show election results by county. The dot counts are scaled to population density.

At first glance, I thought it was a 2024 version of this 2020 election map that shows the mix of voting within regions. A two-dimensional angle for grains of sand. But the map above shows just the winner of each county, which caught me off guard, because I associate the method with mixing demographic groups.

To show the mix of votes across the country, the Washington Post used a sand pile metaphor. Each grain of sand represents a vote for red or blue, and more votes create larger piles. Some piles are more red and some are more blue, but overall, you get a lot of mixed piles.

This is in contrast to a choropleth map that shows the winner in each region. One is not necessarily better than the other. Instead, this sand map shows a different angle to the data.

New York City recently issued a drought warning because of an abnormally dry fall. For Bloomberg, Denise Lu used a heatmap to highlight day streaks without rain via precipitation measurements in Central Park.

It’s more of an event-driven graphic than a pattern-driven one. I wonder if reversing the color scale would be useful here. Would it make the longer streaks appear “dryer” with empty space?

For BBC, Zoe Kleinman reports:

Not so long ago, 23andMe was in the public eye for all the right reasons.

Its famous customers included Snoop Dogg, Oprah Winfrey, Eva Longoria and Warren Buffet – and millions of users were getting unexpected and life-changing results.

Some people discovered that their parents were not who they thought they were, or that they had a genetic pre-disposition to serious health conditions. Its share price rocketed to $321.

Fast forward three years and that price has slumped to just under $5 – and the company is worth 2% of what it once was.

What went wrong?

It’s mostly wishful thinking on my part, but maybe people started to feel strange about sending their DNA to a company they didn’t know that much about.

A $40 million superyacht called the Bayesian sank off the coast of Sicily, but the exact cause is unknown. The New York Times illustrated the possibilities:

Reports immediately after the disaster raised the possibility that the Bayesian had been hit by a tornado-like disturbance called a waterspout, but the authorities don’t think that happened. Still, the wind was doing something dangerous: It was changing direction.

According to a nearby weather station, it was blowing west-southwest then southwest, then north-northwest. This increased the chances of getting ambushed by a random gust that could slam into the side of a boat, which can tilt even a big vessel.