Charting NICAR Attendance, Over the Years

By Matt Stiles | | Topics: News

Next week is the Investigative Reporters and Editors annual CAR convention — the gathering of news nerds from across the world to discuss the latest and greatest in data journalism. This year NICAR, as its known among the nerds, is in Jacksonville, Fla.

After attending each year since 2006, I had to skip the convention in 2015 and 2016 because I now live in Seoul. But I’m making the long journey to Florida this year, and I wanted to know how many people would be there.

The fine folks at IRE graciously shared historical attendance data with me:

(I’ll be using this data, by the way, for our demonstration session on NPR’s dailygrapics rig — the visualization tool I use for this blog).

“Could Trump Really Deport Millions of Unauthorized Immigrants?”

It’s unclear if Mr. Trump could carry out the deportations he has proposed without violating due process, especially at the scale and speed he has suggested. The last time the United States carried out mass deportations was when President Dwight D. Eisenhower authorized military-style roundups to expel hundreds of thousands of Mexicans in 1954.

Read more at: www.nytimes.com

“How Many Structurally Deficient Bridges are in Your County?”

Select a county of the bridges in are structurally deficient. That is the national average of 9.4%. See county details Percent structurally deficient bridges by county Bridges are rated by a sufficiency rating that is an overall measure based on inspector ratings of many aspects of the bridge’s top deck and underlying structure.

Read more at: www.washingtonpost.com

Maps: Where Are America’s Alternative Fuel Stations?

By Matt Stiles | | Topics: Policy & Politics

I recently stumbled upon the U.S. Department of Energy’s alternative fuels data center, a clearinghouse for information on transportation technology. Inside there’s a handy station locator tool allowing users to find fueling centers for specific types of vehicles.

Perfect for a quick map exercise:

Happy Valentine’s Day, America: Charting Our Declining Marriage Rate

By Matt Stiles | | Topics: Demographics, News

It’s Valentine’s Day, a perfect time to note that the marriage rate in the United States has been on a steady decline for decades, save for a brief spike in 2012.

So romantic.

Here’s the rate per 1,000 people since 1997:

You can also view that rate by state. What’s up with you, Hawaii? (I’ve excluded Nevada, which skewed the axes for all the small multiples because of its freewheeling marriage culture). There are some interesting trends here, but most states remain relatively close to the national rate:

Here’s the 2015 marriage rate, by state, on a tile grid map:

Mapping South Korea’s Total and Foreign Populations — by Municipal District

By Matt Stiles | | Topics: Demographics, South Korea

South Korea, my adopted home for almost two years, has about 50 million residents as of the last census, in 2015. Most of them are settled in the country’s urban areas. About 22 million residents, for example, live in Seoul, the capital in the country’s northwest corner, and its adjacent province, Gyeonggi.

As an experiment to create a choropleth map with D3 and NPR’s dailygraphics rig, which drives most of the visualizations here, I’ve mapped the total population by municipal districts. In this example, Seoul is outlined with red:

I am, of course, not a citizen of South Korea. I’m a “foreigner” — as we’re referred to here. This is where the 1.3 million foreigners — many of them ethnic Koreans who immigrated from China — have settled across the country. Again, Seoul is outlined with red:

And this map shows the roughly 330,000 foreigners living in Seoul proper. This time I’ve highlighted Yongsan-gu, my home district in the city center:

“Remembering Hans Rosling, The Visualization Pioneer Who Made Data Dance”

“Hans Rosling’s famous lectures combine enormous quantities of public data with a sport’s commentator’s style to reveal the story of the world’s past, present and future development.” — BBC

Professor Hans Rosling, the statistician and epidemiologist who brought dramatic flair to animated visualizations of dry public health data, has died in Finland of pancreatic cancer.

Read more at: www.washingtonpost.com