Describe an application in which a linear referencing system is particularly useful
Explain how the datum associated with a linear referencing system differs from a horizontal or vertical datum
Identify several different linear referencing methods (e.g., mileposts, reference posts, link and node) and compare them to planar grid systems
Identify the characteristics that all linear referencing systems have in common Unit GD4 Datums (core unit) “Horizontal” datums define the geometric relationship between a coordinate system grid and the Earth’s surface, where the Earth’s surface is approximated by an ellipsoid or other figure. “Vertical” datums are elevation reference surfaces, such as mean sea level.
Explain how a network can be used as the basis for reference as opposed to the more common rectangular coordinate systems
Discuss the magnitude and cause of error generated in the transformation from linear to planar coordinate systems