New York Pops Up

An excellent info-graphic that uses a "3-D" effect to portray population. In this case, it contrasts the population shift that goes on in New York City (a portion of Manhattan, to be specific) between day and night. The bars showing relative numbers looks like a stratospheric city skyline:



I got a chuckle when my imagination created the image of a city with massive towers that rise out of the ground as workers arrive in the morning, and recess in the evening as all the workers go home. No need for elevators!

Via The Urbanophile

Purple States of America 2008

Mark Newman has already come out with his 2008 Election Cartograms. (Last year I highlighted his 2004 Election Cartograms.)

Take the standard electoral vote maps we have been seeing since election night, and adjust the shape and size of each state for population and you get this:



It gives some real perspective on the size of Barack Obama's electoral vote landslide. However, as we know, in many of these states, the popular vote was very close. Re-color the map to show how the counties voted; strongly for Obama is dark blue, strongly for McCain is bright red, and shades of purple for everything in between...



Once again, the nation is bruised, but carries on...

UPDATE

Declan Butler has his own calculations for a population cartogram. He also includes Hawaii and Alaska (that sort of looks like a squashed bug...)

Sporcle: Can you name the most populous US cities?

Can you name the 25 most populous US cities?



Sporcle.com posts new trivia quizzes every day. Many of them are geography related. Today they posted a quiz on the 25 most populous cities in the United States. I am embarrased to say that I only scored 21 out of 25. Can you do better? No cheating by looking at the U.S. Census figures first...

Other map related Sporcle quizzes:

Countries of Europe
Countries of Asia
Most populous cities of the world
etc.

Plus, these were tougher than I thought they'd be:

U.S. State Flags
Flags of Europe

#260

Big Apple, or Big Spud?

From Very Small Array, via Curbed.com

Two really cool mappish/design/architecture/popular culture/etc. and other stuff blogs I've just discoverd.

The Measure of America

The American Human Development Project offers interactive maps for over 60 human development indicators including health, education, income, environment, housing and security. Data can be presented by state or congressional district, and can be exported as a printable PDF file. Below is an example of the education statistics; a map of congressional districts by the percentage of the population with less than a high school education:



Maps can also be created for individual states (although they might not be quite so useful for the western states with only one or two congressional districts...)

Via The Electoral Map

The Politcal Clout of Fairfax County, Virginia

The Commonwealth of Virginia has been a fairly solid Republican state from many years. However, in response to President Bush's "unpopularity", Democrats gained control of the State Senate in last Tuesday's voting.

See: The Washington Post's Virginia Post-Election Roundup

In my previous post, I pointed to maps that demonstrate the cartographic "lie" of the national electoral map. Here, in yet another interesting map blog, The Electoral Map, Patrick Ottenhoff points out that the shift in State politics can be attributed, chiefly, to a shift in the voting pattern of the most populous county in the state: Fairfax County, suburb of Washington, D.C.



This map demonstrates the population of Fairfax County, relative to the rest of the state.

The Purple States of America

In How to Lie with Maps, Mark Monmonier discusses how maps can give false impressions. A perfect example of this is the map of the United States used to show "popularity". Many of the physically large states in the West have relatively smaller populations than the "smaller" states in the East.

Michael Gastner, Cosma Shalizi, and Mark Newman of the University of Michigan make an excellent demonstration of this cartographic "lie" with their analysis of voting in the 2004 Presidential Election. Some sample maps:

To look at a standard electoral map of the United States, it would appear that a significant majority of the nation is "red", or voting Republican. Look at all the "red" on the map!:



However, if you make a population cartogram (adjusting the size of the states by their relative population) you can see just how close the election really was:



Yet, is Ohio really all red, and Michigan really all blue? Of course not. So if you color the nation county-by-county, and give those counties different shades of colors between red and blue, based on how strong the vote was, you get something like this:



So, basically, after the 2004 election, the nation was one big bruise...

Read the full analysis and progression of 2004 presidential Electoral maps, or the author's breakdown of the 2006 Congressional elections, or more fun with international socio-economic cartograms as well as the World Mapper.