Proposal for a National Spatial Data Infrastructure of Surveying Data
Benefits exist if publicly available boundary survey geometries are published nationally as a spatial data infrastructure. Access to this infrastructure data will provide Benefits both to surveyors and to all involved with digital cadastres. In a geodatabase format, the geometries of previous and ongoing surveys can be compared and analyzed within the context of resolving conflicts among paper records, digital records, and physical evidence. Implementing an infrastructure of these data must include a national standard of boundary surveying data. Web links to the author's proposed vendor-independent national data standard are offered in the following paragraphs. Small areas of this proposed infrastructure could be downloaded as a database package file, along with parcel data from Federal Geographic Data Committee's (FGDC) existing Cadastral Theme of the National Spatial Data Infrastructure (CadNSDI). Surveying software could be adapted to directly update the offline database tables during measurements to expand capabilities while simplifying data interaction during field, review, and approval of surveys as well as seamlessly updating the published spatial data infrastructure by authorized Data Stewards. These updated geometries could allow surveyors to quickly provide best guess georeferencing of parcel boundaries in support of collaboratively maintaining the CadNSDI, including defensible indications of positional uncertainty.
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