In the fall of 2006, I led a workshop for students in an undergraduate history seminar at the University of Michigan. Here are their maps.

This map shows the geographical distribution of sex ratios at birth in China, using data from the 2000 population census. Originally designed for print, the map is displayed here in a web viewer.

Somewhere between a text reader and an information graphic, this tool has a graphical interface for searching and browsing Shakespeare's plays.

I developed this interactive web map in 2005 for the Wisconsin State Cartographer's Office as a viewer for WMS services in the Wisclinc catalog. It features smooth grab-and-drag panning, tile caching, layer management and a resizable map window.[more]

Explore the 1993 flood on the upper Mississippi and Missouri Rivers with this animated, interactive Flash map. The map is a visualization of streamflow data from USGS gaging stations.

This Flash-based map viewer has an uncluttered interface (no buttons!) that enables both panning and zooming. Here, it shows a famous map of the 1854 London cholera outbreak by John Snow, a pioneer in the field of epidemiology.

This is my first map, a homework assignment for Mark Harrower's Geography 575 class at the University of Wisconsin, Madison. The map takes a playful approach to visualizing airplane flights in time and space.