Geomorphic Change Detection Software

Simple Change Detection in Raster Calculator vs. GCD

Overview

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..

Data and Materials for Exercises

Datasets

File of Data for Exercise Part 1 and 2:

G_SimpleDoD.Zip

File of Data for Exercise Part 3:

G_IntroGCD.zip

Prerequisite for this Exercise

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

Step by Step

Part 1A Raster Calculator

ExcerciseG1A

In this video tutorial, we show you how to do a simple DoD Analysis in ArcGIS 10 just using the rater calculator.

The example data used in this tutorial are from Sulphur Creek, Napa County, California.

For corresponding lecture slides and more context, see this topic from GCD Workshop.

Part 1B Threshold

ExcerciseG1B

ExcerciseG1B_steps

Part 2 GCD

ExcerciseG2

Part 3 Practice in GCD

ExcerciseG3

GCD 7 Tutorial Video
GCD 6 Tutorial Video

← Previous Tutorial Next Tutorial →

Back to GCD Help Back to GCD Home