ERIC Number: ED450779
Record Type: Non-Journal
Publication Date: 2000-Aug
Reference Count: N/A
Issues of Authenticity of Spatial Data.
This paper discusses the authenticity of digital spatial data. The first section describes three formats for digital spatial data: vector, raster, and thematic. The second section addresses the integrity of spatial data, including six possible formats for the same information: (1) aerial photographic prints, time stamped, primary, remotely sensed data; (2) orthographic photography, time stamped, primary, remotely sensed data, projected and geographically referenced; (3) cartographic line work, secondary, derived from aerial photography; (4) digital orthographic photography, time stamped, primary, remotely sensed data, projected and geographically referenced; (5) scanned cartography, projected and geographically referenced; and (6) digital cartographic line work, vector digitized from scanned maps or map separates. The third section considers issues of data quality and error, including managing data quality through lineage and metadata. The fourth section covers metadata, including standards for the fields for lineage and process steps. The fifth section summarizes issues of authenticity in spatial data, emphasizing the importance of defining metadata structures to carry document authentication declarations or proofs. (MES)
Descriptors: Cartography, Information Management, Information Technology, Maps, Quality Control, Standards
For full text: http://www.ifla.org/IV/ifla66/papers/142-124e.htm.
Publication Type: Reports - Descriptive; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A