National Geospatial Program Standards
Available Documents | Version Date | Available Formats |
---|---|---|
Standards for Digital Elevation Models Contains preliminary pages and pages that briefly describe the various changes that have been made to the standard. (5 p., 11KB, PDF) |
01/1998 | Download the latest Adobe Reader |
Part 1: General, Standards for Digital Elevation Models Identifies and provides a general overview of the characteristics of the five different Digital Elevation Model (DEM) product types. This part describes horizontal coordinate systems, units of coverage, elevation units, profile spacing (horizontal grid spacing), and data order of DEM data. (17 p., 97KB, PDF) |
08/1997 | |
Part 2: Specifications, Standards for Digital Elevation Models Defines specifications for data accuracy, classification levels, format, geometry, areas of constant elevation, data records, horizontal and vertical datums, and geographic reference systems for DEM products. (70 p., 207KB, PDF) |
01/1998 | |
Part 3: Quality Control, Standards for Digital Elevation Models Identifies several procedures for accuracy verification and editing that are mandatory during a quality control check of DEM data. (10 p., 23KB, PDF) |
08/1997 |
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