G. Simple Change Detection in Raster Calculator vs. GCD


This exercise is intended to contrast how to build a DoD (DEM of Difference) with simple change detection minimum level of detection thresholding in ArcGIS's raster calculator versus using the GCD Add-In.

Data and Materials for Exercises


Prerequisite for this Exercise

  • Some ArcGIS experience
  • ArcGIS 10.X w/ Spatial Analyst Extension
  • GCD Add-In

Step by Step

Part 1A Raster Calculator

Simple Change Detection - Raster Calculator - Exercise Part 1A

Part 1B Threshold

Simple Change Detection - Raster Calculator Thresholded - Exercise Part 1B

Part 2 GCD

Simple Change Detection - GCD - Exercise Part 2

Part 3 Practice in GCD

Simple Change Detection - Getting To Know GCD - Exercise Part 3

Related Online Help or Tutorials for this Topic