Skip to content

Help & guidance Guides to Good Practice

Reference/datum metadata

Adam Barnes, Kieron Niven (Ed.), Archaeology Data Service / Digital Antiquity, Guides to Good Practice

Entry Description
For each control point
Source and datum (total station, GPS, etc. and WGS84, UTM, LRF) Identify the source for control point collection and the datum used during data collection.
xyz coordinates List the three-dimensional coordinates for each control point.
xyz covariance matrix Provide full correlation if available (from survey adjustment or GPS baseline solution), otherwise provide estimated standard deviation or variance of each coordinate.
Textual description of location Provided a textual description for the location of each control point.
Image with control point location indicated An image with the control point location clearly indicated.
Geometric constraints on reference features or control List any known geometric constraints for reference features or control.
Coordinate System Name of coordinate system, datum and projection.