George Mason University
CSI/Statistics Colloquium Series
Seminar Announcement
HAPs, Micromaps and GPL - Visualization of Geographically
Referenced Statistical Summaries on the World Wide Web
Jürgen Symanzik
U.S. George Mason University
ABSTRACT
In this talk we report on an approach to visualize
the U.S. Environmental Protection Agency (EPA)
hazardous air pollutant (HAP) data on the
World Wide Web (WWW). Long-term cumulative concentrations
for 148 HAPs have been estimated as a part of EPA's
Cumulative Exposure Project
(http://www.epa.gov/CumulativeExposure)
for each of the 60,803 census tracts in the 48 contiguos states.
Confidence bounds are available as well for this data set.
Our WWW approach is based on the Graphics Production
Library (GPL) and extends it with micromaps. The GPL is a
JAVA-based application that allows to display
statistical data as row-labeled plots and time series plots
on the WWW. Micromaps are
a series of small generalized maps that highlight the
geographical region associated with statistical features
in accompanying plots.
Additional interaction through the Web browser is possible.
Numerical data in addition to a statistical
plot can be displayed as well through interactive tables.
These tables form a hierarchical menu
and allow the interactive sorting according to different criteria.
Friday, March 12, 1999
George W. Johnson Center, Assembly Room D
Seminar at 10:45 a.m.
Refreshments at 10:30 a.m.
For the 1998 Fall Seminar Schedule, go to
http:www.science.gmu.edu/statseminars