GEOG 486
Cartography and Visualization



A. Objectives

By the end of this lesson, you should be able to:

  • Identify methods to represent surfaces, e.g. elevation, and other continuous, smoothly changing data.
  • List attributes of 3-dimensional geographic representations.
  • Use hillshading and hypsometric tints to represent an elevation surface map.
  • Use interpolation, isoline features and classification to illustrate a surface representing precipitation.
  • Compose a layout that visually compares the two related surface phenomena.

B. Project Overview

This project examines issues related to creating both isoline and shaded relief representations of data surfaces. You are presented with a DEM in raw text file format. You will create both a contour map and a shaded relief map from the DEM. Then, to introduce sampling strategies and interpolation methods, you are presented with a set of point precipitation data that you will interpolate to a continuous surface. In turn, you use the surface to create an isoline representation.

C. Lesson Checklist

Lesson 6 is one week in length. (See the Calendar in Canvas for specific due dates.) To finish this lesson, you must complete the activities listed below. You may find it useful to print this page so that you can follow along with the directions.

Step Activity Access/Directions
1 Read the concepts introduced for this lesson. See the Concept Gallery page to begin.
2 Work through the Lesson 6 Project. See the Part I: An Elevation Surface - data preparation page to begin.
3 Submit the Lesson 6 Project.

Detailed instructions located on the Lesson Project Tasks page.

4 Submit Course Capstone Proposal. See Writing the Project Proposal for directions for writing and submitting the Proposal.

Complete the Lesson 6 Quiz.

Complete the Lesson 6 Quiz in Canvas.


If you have any questions now or at any point during this week, please feel free to post them to the Lesson 6 Discussion Forum. While you are there, feel free to post your own responses if you, too, are able to help out a classmate.