maps – Page 62 – Coffee Spoons

Choropleth Maps

Keeping with maps, they can be useful, but all too often people fall back upon them because it is a quick and easy way of displaying data for geographic entities. This graphic from the New York Times on ADHD is not terribly complex, but it uses a map effectively.

The article discusses how ADHD rates among states vary, but are still higher in the South. The map supports that argument. Consider how it would be different if every other state were darkened to a different shade of purple. There would be neither rhyme nor reason as to why the map was being used.

A subtle point worth noting is that only the states falling into the highest bin are labelled. Those are the states that best support the story. The remainder of the states are left unlabelled so as not to distract from the overall piece.

Credit for the piece goes to the New York Times.

Waste Water Disposal Wells

Today’s map comes from the Texas Tribune out of Austin, Texas. The map displays the location of disposal wells, i.e. the sites where the waste water from fracking and related drilling operations are dumped. Firstly, the map hints that the fracking industry is not spread equally across the state.

But secondly, the map does this through the use of hexagons that represent well density. So at a broad, state-wide view, the user sees almost a traditional choropleth. The difference is that these are not natural or political boundaries but rather data constructs designed to aggregate highly granular data points.

Well locations state-wide are aggregated into coloured hexagons

Even nicer, however, is that if you want to see where disposal wells are in your county or town, the map lets you do that too. Because as you zoom in ever closer, the individual wells appear within the hexagons that they colour. It’s a very solid piece of work.

Individual wells colour the hexagons, but are only visible up close

Credit for the piece goes to Ryan Murphy.

Arming a Civil War

War is good for the arms business. So a long and bloody civil war in Syria is just what arms manufacturers want. And while arming the Syrian government is fairly easy, how do you get weapons and ammunition to the Syrian rebels? The New York Times maps the flow of arms through an almost Sankey-like diagram where the number of flights determines the width of the arrows from source to destination.

And while that would be sufficient information to warrant a map, the Times adds a further layer by showing when the flights arrived. Clearly the civil war began with a certain number of arms. But as the war has both drawn on and become bloodier, new weapons are needed and ammunition needs to be restocked. Those needs likely explain a recent surge in flights.

Map of routes used to arm Syrian opposition forces

Credit for the piece goes to Sergio Peçanha.

Proposed Expansion of Massachusetts Railway Network

When we talk about new rail projects, or even highway or airport expansions, we like to include maps of new routes and destinations. In that sense this map from the New York Times is not new. However, we often forget in such visualisations that we have the opportunity to add layers of information that show why these expansions are beneficial.

Proposed Massachusetts railway network expansion

Here, note in particular how the proposed improvement projects link the dense corridor of urban settlements stretching from Boston through Worcester to Springfield. Additional lines connect more distant southerly cities such as Fall River to Boston. These might normally be seen as dots at ends of a line, but by showing the density of the population in these corridors, readers can understand how the proposed lines might benefit more people than just those living at the dots.

Credit for the piece goes to the New York Times.

The Life Expectancy Gap Between Men and Women

Today’s post comes via my coworker Jonathan and his subscription to National Geographic. The spread below looks at the gap in life expectancy between men and women in the United States. Outliers are highlighted by drawing lines to the counties in question while the same colour scale is used on a smaller map to look at historic data. And of course for those concerned about how the US places amongst its piers on the international stage, a small selection of countries are presented beneath in a dot plot that looks at the differences and averages.

Credit for the piece goes to Lazaro Gamio.

Pro Tip #314: Don’t Stare Into the Sun

Don’t stare into the sun. It’ll burn your eyes out, kid. Okay, so maybe that’s a stretch of a reference, but, seriously, don’t. Let the professionals do it with (properly shielded) telescopes and such. This piece from the New York Times looks at a solar flare from 2012 and shows how quickly it developed. The bottom of the piece then shows the reader the frequency of solar minimums and maximums along with some explanatory graphics about just what flares and sunspots are and how they are created.

Also note the centre panel in the top row for the relative size of Earth. Yeah, who’s feeling big now? (Not me.)

Credit for the piece goes to Jonathan Corum.

Analysing Amtrak

The Brookings Institution released a report investigating the ridership of Amtrak’s various routes in an attempt to identify ways of cutting costs. They also released an interactive piece along with the report that pairs a map with a simple table.

Highlighting a route in the table highlights the route in the map and links the two together for the user. Clicking a dot on the map shows the details for the metropolitan area ridership along with the total number of stations. Lastly, because the table is sortable, the user can identify for themselves the conclusion reached by the report. To become solvent, Amtrak should divest itself of its long-haul routes that run at significant losses and focus on the profitable routes that could subsidise the popular though still minor loss-making routes.

Amtrak routes with the Northeast Regional highlighted

Credit for the piece goes to Alec Friedhoff.

The United States Compared to the Rest of the World

Have you ever wondered how big the United States is? MAPfrappe allows you to compare different geographies in Google Maps.

My employer has an office in Chicago and an office in Santiago, Chile. How big is Chile? North-to-south it is quite large. But east to west, the distance is like that of driving from Chicago to Detroit.

Via BuzzFeed.

The Reach of Nazi Concentration Camps

In a truly disturbing article, the New York Times detailed recent research by the United States Holocaust Memorial Museum to identify all the camps established by Germany in World War II, be them extermination camps, labour camps, ghettos, &c. At one point in the article, one of the principals behind the USHMM work stated he expected to find as many as 7,000 such camps across Europe. They have currently identified 42,500.

Two maps accompany the article. The first details the reach of ghettos for Eastern European Jews.

This second map plots the locations of the primary and secondary SS concentration camps.

Credit for the pieces go to the New York Times.

Catholics and Cardinals

As the conclave in Rome is almost ready to begin, likely sometime next week, cardinals are gathering in Rome to discuss the affairs of the Catholic Church and then elect a new pope from within their ranks. Many outsiders talk about the time for a pope from outside of Europe, that the papacy has been an office for Europeans—namely Italians—for too long.

However, the preponderance of Catholics outside of Europe is, in the 2000-year history of the Church, a relatively recent phenomenon. Explosive growth in Latin America, Africa, and Asia combined with a decline in European Catholics means that it is only in the last few decades that Europeans have fallen from being nearly 2/3 of the global Catholic Church.

As my infographic attempts to explain, despite this demographic shift, the early Catholic Church chose popes from the distant corners of its territory before it contracted. That historical consolidation in Europe—Italy in particular—has led, however, to a disproportionate weight of cardinal electors, i.e. the cardinals who elect the pope, in favour of Italy and Europe. And as the cardinals typically choose from among their own, it is far more likely that the next pope will come from Europe if not Italy.

Click the image to see the full-sized graphic.