Describe contracts, licenses, and other mechanisms for sharing geospatial data
Outline the terms of a licensing agreement with a local engineering consulting firm that a manager of a county government GIS office would employ if charged to recoup revenue through sale and licensure of county data
Discuss dynamic segmentation as a process for transforming between linear and planar coordinate systems
Construct a data structure to contain point or linear geometry for database record events that are referenced by their position along a linear feature
Explain how linear referencing allows attributes to be displayed and analyzed that do not correspond precisely with the underlying segmentation of the network features
Describe how linear referencing can eliminate unnecessary segmentation of the underlying network features due to attribute value changes over time
Demonstrate how linear referenced locations are often much more intuitive and easy to find in the real world than geographic coordinates
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
DA3-4 - Labor and management