2018 QUARTER 03

DC-13 - Stereoscopy and orthoimagery
  • Explain the relevance of the concept “parallax” in stereoscopic aerial imagery
  • Evaluate the advantages and disadvantages of photogrammetric methods and LiDAR for production of terrain elevation data
  • Specify the technical components of an aerotriangulation system
  • Outline the sequence of tasks involved in generating an orthoimage from a vertical aerial photograph
KE-03 - Strategic Planning for GIS Design

Geographic Information Systems (GIS) are pervasive and have become an essential feature in many professional disciplines. Prior to adoption, implementation or use of any GIS, a system must be properly designed to meet its organizational goals, and this requires comprehensive strategic planning to take place ahead of the design. In this article, we discuss methods for strategic planning in GIS design, drawing from literature in Information Systems and GIS research and practice, and business management. We present a four-step approach toward planning for GIS design that will ensure the system is well-suited to further an organization’s long-term functions, applications, and users’ needs.

FC-12 - Structured Query Language (SQL) and attribute queries
  • Define basic terms of query processing (e.g., SQL, primary and foreign keys, table join)
  • Create an SQL query to retrieve elements from a GIS
  • Explain the basic logic of SQL syntax
  • Demonstrate the basic syntactic structure of SQL
DC-01 - Survey theory and electro-optical methods
  • Apply coordinate geometry to calculate positions in a coordinate system grid based on control point locations and measured angles and distances
  • Given the elevation of one control point, calculate the elevation of a second point by differential (spirit or direct) leveling
  • Given the elevation of one control point, calculate the elevation of a second point by trigonometric (indirect) leveling
  • Describe the differences between differential and trigonometric leveling
  • Explain how electronic distance measurement instruments work
  • Define the concepts ellipsoidal (or geodetic) height, geoidal height, and orthometric elevation
  • Illustrate the relationship between the concepts of ellipsoidal (or geodetic) height, geoidal height, and orthometric elevation
CV-08 - Symbolization and the Visual Variables

Maps communicate information about the world by using symbols to represent specific ideas or concepts. The relationship between a map symbol and the information that symbol represents must be clear and easily interpreted. The symbol design process requires first an understanding of the underlying nature of the data to be mapped (e.g., its spatial dimensions and level of measurement), then the selection of symbols that suggest those data attributes. Cartographers developed the visual variable system, a graphic vocabulary, to express these relationships on maps. Map readers respond to the visual variable system in predictable ways, enabling mapmakers to design map symbols for most types of information with a high degree of reliability.

PD-07 - System deployment
  • Develop a phasing schedule for deployment of an enterprise-wide system
  • Integrate geospatial applications with other enterprise information systems
KE-21 - System Modelling for Effective GIS Management

A geographic information system in operation is highly complex, as the scope of the GIS&T Body of Knowledge demonstrates. Modern society relies on many complex systems, but most are self-contained mechanisms with limited and well defined interfaces. A GIS is a complex open system that extends across the realms of hardware, software, data, science, and human processes. A conceptual model of a GIS can be an effective tool to design, implement, operate, maintain, manage, and assessment tool.

PD-06 - System testing
  • Describe the goals of alpha and beta testing
  • Implement established testing procedures on prototype systems
  • Use testing results to prepare a system for deployment
  • Conduct a quality assurance review
DM-46 - Systematic methods
  • Describe the historical context of the USPLS
  • Discuss the consequences of the USPLS with regard to public administration (i.e., zoning)
  • Explain how townships, ranges, and their sections are delineated in terms of baselines and principal meridians
  • Illustrate how to quarter-off portions of a township and range section
  • Discuss advantages and disadvantages of systematic land partitioning methods in the context of GIS
  • Differentiate the USPLS from the geographic coordinate system
  • Describe the New England Town partitioning system
  • Compare and contrast the United States Public Land Survey System (USPLS) and the Spanish land grant and French long lot systems