1 GEOGRAPHIC VISUALIZATION Aileen R. Buckley Department of Geography University of Oregon Eugene, OR 97405-1251 E-mail: aileen@darkwing.uoregon.edu Mark Gahegan Department of Geography The Pennsylvania State University State College, PA 16802 E-mail: mark@geog.psu.edu Keith Clarke Geography Department University of California, Santa Barbara Ellison Hall 3611 Santa Barbara, CA 93106-4060 Email: kclarke@geog.ucsb.edu December 1, 2000