Geospatial Information Systems

  Geography 453 – Advanced GIS Midterm – Spring 2021 Question #1 – (25 points) Discuss the differences between spatial and attribute sub-setting [making a large data set smaller]. What ArcGIS tools can perform an attribute subset? What tools can you use to perform a spatial subset? What are the inputs and resulting outputs of these processes? Give examples of applications that would require attribute sub-setting. Give examples of applications that would require spatial sub-setting. Question #2 – (25 points) Discuss the difference between spatial joins and map overlay. What spatial join options and overlay tools are available in ArcGIS? Describe the functionality of each, including characteristics of input layers, output layers (i.e. feature class types, coordinate systems, attributes, etc.)