It may not work well on platforms whose browsers are not mature for running Applets. If it does not work on your system, please try the non-Java Version 2.0 . DDViewer lets you create maps and calculate statistics for 220 demographic variables from the 1990 U.S.Census. DDViewer 3.0 will map states, counties, and census tracts. To use DDViewer, please follow the directions in the status line at the bottom of the main window.
General instructions are available via our tutorial.
The 'Help' buttons in each DDViewer window will bring up more detailed assistance.