Sean Michael Crotty, PhD
MODULE 01

Introduction to GIS

What is GIS? History, applications, and career paths in geographic information science.

Video Lecture

Watch the lecture video for this module. Runtime: approximately 45 minutes.

Having trouble viewing? You can also download the video file (MP4, 245 MB) for offline viewing.

Lecture Slides

Download the presentation slides used in this lecture.

Required Reading

Complete the following readings before our next class meeting.

Textbook Chapter

Getting to Know ArcGIS Pro
Chapter 1: Introducing GIS (pp. 1-28)
Focus on: What is GIS, GIS components, and spatial thinking

Supplementary Article

Goodchild, M. F. (2010). "Twenty years of progress: GIScience in 2010." Journal of Spatial Information Science, 1(1), 3-20.

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Lecture Notes

What is GIS?

A Geographic Information System (GIS) is a computer system designed to capture, store, manipulate, analyze, manage, and present all types of spatial or geographical data. At its core, GIS answers the fundamental question: "What is where, and why?"

Key Components of GIS

  • Hardware: Computers, GPS units, digitizers, plotters
  • Software: ArcGIS, QGIS, Google Earth, web mapping platforms
  • Data: Spatial data (vector, raster) and attribute data
  • People: Analysts, cartographers, database administrators
  • Methods: Analysis procedures, workflows, best practices

Brief History of GIS

  • 1960s: Canada Geographic Information System (CGIS) - Roger Tomlinson
  • 1970s: Harvard Lab developments, ESRI founded
  • 1980s: Desktop GIS emerges, ArcInfo released
  • 1990s: Windows-based GIS, web mapping begins
  • 2000s: Google Maps/Earth revolution, open-source GIS growth
  • 2010s-Present: Cloud GIS, real-time data, AI integration

GIS Applications

GIS is used across virtually every industry:

  • Urban Planning: Zoning, land use, transportation
  • Environmental Science: Conservation, climate modeling
  • Public Health: Disease tracking, healthcare access
  • Business: Site selection, market analysis, logistics
  • Emergency Management: Disaster response, evacuation planning
  • Archaeology: Site documentation, landscape analysis

Careers in GIS

The geospatial industry continues to grow. Common job titles include:

  • GIS Analyst / Specialist
  • Cartographer
  • Geospatial Data Scientist
  • Remote Sensing Analyst
  • Location Intelligence Analyst
  • Urban/Regional Planner

Discussion Questions

Come to class prepared to discuss the following questions:

  1. Think about your daily life. How many times do you interact with GIS or location-based services in a typical day? List at least 5 examples.
  2. The textbook describes GIS as both a tool and a science. What's the difference between "GIS" and "GIScience"?
  3. Roger Tomlinson is often called the "father of GIS." What problem was he trying to solve when he developed CGIS?
  4. How might the growth of artificial intelligence and machine learning change the field of GIS in the next 10 years?