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What method was used to create the maps of county-level estimates?

April 26, 2017county-level create estimates Maps method Used

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What method was used to create the maps of county-level estimates?

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The maps were created by merging the modeled estimates in database format, with geographic boundary files, called shapefiles. In this manner, the statistical data in the database were spatially referenced with their associated state and county boundaries. As a result, the data can be viewed as a map and the user can interactively map the geospatially-based data. The Albers Equal-Area (Continental United States) projection was used for the national maps and the NAD 1983 UTM Zone 14N map projection was used for the state maps.