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Track: Local/State Government, Cadastral, Land Records
John Hollingsworth
University of North Carolina
UNC-Charlotte /Dept. of Geography
9201 University City Blvd.
Charlotte, NC 28212
Telephone: 704-547-3664
Fax: 704-547-3182
E-mail: jchollin@uncc.edu
Mike Reyes, Lin Cao
Public Database Management: Updating Planimetric Coverages in ArcInfo
Planimetric (roof-area) coverages have become a useful tool for display and planning by developers and city/county officials. Local developers use planimetric images in identifying densely developed areas as well as vacant areas for future development. County departments use planimetric coverages to identify structures that fall within floodplains, along proposed traffic corridors, and within influential buffers. Therefore, the need arises to possess an accurate planimetric coverage at all times, even with constant development. Developing and updating planimetric layers using orthophotos require extensive capital, and long hours for data conversion and must be shot during the winter months to ensure accuracy. We propose an alternative to this updating procedure that is more cost and time efficient and can be effectively produced throughout the calender year. We will discuss using building permit data to (1) identify the location and type of development occurring (2) properly align the structure point
with the street centerline file, (3) buffer the point to the proper area of the structure, and (4) overlay developed polygons with existing planimetric data to produce an updated and accurate planimetric coverage. This presentation will be in the format of "lecture with slides."
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