Posts Tagged ‘graduated circle’

Automatic Legends for Proportional Symbol Maps (Jenny)

Wednesday, April 8th, 2009


[Editor’s note: My colleague Bernhard Jenny in Switzerland has created a helpful utility for visualizing graduated circle and graduated square legends with user specified parameters for max and min values, size, distance, and breaks. Breaks are automatically nice rounded numbers and the result can be exported as an SVG graphic compatible with Adobe Illustrator. Bernhard likes to tinker, so check back at his site for later updates. Screenshot above.]

Republished in part from Bernhard’s site.

This Java applet demonstrates the automatic legends for proportional symbol maps. Legends only display intermediate symbols for round values (for example 100, 250, 500, 1000, 2500, etc.). The legend will always display a set of appropriate intermediate symbols, even when the minimum and the maximum values are very large or very small.

View the interactive version at Bernhard Jenny’s site . . .

Interactive Map: Immigration Explorer (NY Times)

Thursday, March 12th, 2009

[Editor’s note: Part of their Remade in America series, this interactive map from the New York Times shows where select foreign-born groups have settled across the United States for the last 100 years. Find trends by ethnic group, zoom into individual states, query data values by county, and view historic data. Interactive leverages mapping toolset developed the last year at the Times for their impressive presidential election coverage. Thanks Geoff!]

Republished from The New York Times.
March 10, 2009. No credit given. 

Screenshots below. Interact with the Flash version at New York Times . . .

Related content: Times Topic |  Opinion blog | Diversity in the Classroom 

(below) All groups as percent of population (choropleth by area) 

(below) All groups as number of residents (graduated circles) 

(below) Default “All Countries” view can be changed to focus on a specific country of origin.  


(below) Focused on people born in China. 

Continue to interact with the Flash version at New York Times . . .

Sources: Social Explorer,; Minnesota Population Center; U.S. Census Bureau

In Aptly Named Rift Valley, Kenyan Deal Rings Hollow

Thursday, March 13th, 2008

kenya rift valley refuge map
Map by Nathaniel Vaughn Kelso and Dita Smith — The Washington Post

(The Washington Post) NAKURU, Kenya – A week after Kenya’s warring political leaders signed a power-sharing agreement, Marian Wambui arrived at a camp for displaced people here, her house having been burned to the ground just two days earlier.

As President Mwai Kibaki and opposition leader Raila Odinga celebrated in Nairobi, the mother of two was wondering where in the unfamiliar sprawl she might put the two plastic bags of belongings that were all she had left in the world.

Wambui stood in the sun, facing the details of her new life: a registration tent and a light blue meal card. A long line led to workers adding fresh names to a list already 16,000 long — mostly people from Kibaki’s Kikuyu ethnic group who had been chased from their homes in this western Rift Valley region and were now living in rows of white tents in a dusty field.

Read the full article at The Washington Post…