Lesson 7: Selection, Proximity, and Overlay

Nicolas MalloyAuthor: Nicolas R. Malloy

7.1 Overview

Too often geospatial analysis are conducted without consideration for uncertainty and error, map projections, and datums. More often,  there is little regard for cartographic convention and communication design goals.  A good analysis considers the properties of geospatial data before GIS software. .  Lesson 7 introduces the first steps in learning how to conduct geospatial analysis. The topics presented within should help to prepare you for more complex uses of GIS, and additional geospatial courses and Humboldt State University.

Learning Outcomes

  • Recall the components, structure, and organization of a database
  • Discuss types of cardinality between database tables
  • Identify the various types of geospatial queries
  • Explain the function of comparison and Boolean operators
  • Construct an expression using SQL
  • Define the four basic operations used in spatial queries
  • Describe the scope of geospatial analysis operations
  • Execute an proximity analysis
  • Compare different methods of overlay analysis

Navigating Lesson 7 Page Sections

The table of contents menu on the right outlines individual pages for this lesson. While reading, you may also navigate through pages using the numbered pagination links at the bottom of each page.