The Identify Census Areas at current map pointer is a function that will identify the state, county, tract/bna, and block group at the location of the current map pointer. This feature is available from the Sharing Menu - LandView in MARPLOT®.
The system will first attempt to locate a census block group polygon at that location. The block group identification number has within it the identification for state, county, and tract/bna. If a block group polygon cannot be found at that location, the system will attempt to locate a census tract/bna polygon. In LandView®, tract/bna polygons are generalized (i.e., some node points that make up the boundary are removed to make them smaller, and faster to display). Therefore, if the current map pointer is near the boundary between two or more tract/bnas, the imprecision of the boundaries may cause you to obtain an invalid result.
Source: U.S. Census Bureau
Last Revised: Thursday, 26-Jan-2012 17:47:33 EST