Abstract
Texas Historic Overlay, 300 Years of Spatially Enabled Historic Maps Track: Archaeology Author(s): James Abbott, Ty Summerville The Texas Historic Overlay project is managed by the Environmental Affairs Division of the Texas Department of Transportation (TxDOT) and executed by PBS&J, a private science and engineering firm. The project involves the research, acquisition, digitization and spatial registration of historic maps for the eastern half of Texas. Three thousand maps were used to complete the dataset ranging in date from 1690 to 1990. The completed map images and vectorized extents are used in GIS software to investigate and predict the location of protected and potentially protected historic features that could impact highway development projects. Use of the data saves money and improves responsiveness by compiling data that would otherwise be researched and prepared per project or missed entirely. Key automation tools developed for the project include PAAG, a tool that calculates horizontal positional accuracy of registered maps, and the Metadata Miner, an application that automates the generation of metadata. James Abbott Texas Department of Transportation Environmental Affairs Division 125 East 11th Street Austin , TX 78701-2483 US Phone: 512-416-2758 Fax: 512-416-2643 E-mail: JABBOTT@dot.state.tx.us Ty Summerville PBS&J Information Solutions 6504 Bridge Point Parkway Suite 200 Austin , TX 78730 US Phone: 512-342-3290 Fax: 512-327-2453 E-mail: tdsummerville@pbsj.com |
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