AbstractGround Truthing Tract-level Population Projections Track: Census and Geo-Demographics Author(s): Chris Williamson, Erik Kancler The California statewide transportation planning process requires census tract-level population projections to the years 2015 and 2025. This paper describes the process of assembling tract projections from a variety of sources, and then ground truthing them for validity using ArcView and various GIS datasets. Chris Williamson Solimar Research Group 973 E Main Street Ventura , CA 93001 USA Phone: 805-643-7700 Fax: 805-643-7782 E-mail: cwilliamson@solimar.org Erik Kancler Solimar Research Group 973 E Main Street Ventura USA Phone: 805=643=7700 |