Laboratory Exercise 4

Analyzing, Creating and Editing Data

and

Making Maps Quickly

 

Background

This laboratory consists of exercises from Chapters 13, 16 and 18 of the lab text, Getting to Know ArcGIS Desktop, with the exercise data obtained from the accompanying CD-ROM.

ArcView is a powerful desktop geographic information system (GIS) developed by Environmental Systems Research Institute (ESRI). With ArcView, you can load any data that's linked to geographic locations and display it graphically as maps, charts and tables. You can also edit the data , change the way it's displayed, append additional data, create some of your own, perform queries to answer specific questions, or meet certain criteria, and analyze information statistically as well as spatially. Results can be shown as quality graphic presentations to print out or display your screen.
 

Lab 4 continues to explore the techniques of creating, analyzing, and editing data, and how to create professional quality maps quickly.

In Chapter 13 (Exercises 13a, 13b), you will learn how to project data.

Chapter 16 (Exercises 16a, 16b, 16c),  introduces you to the techniques of editing features and attributes. Note: Section 16c is important for the Term Project!

Chapter 18 (Exercises 18a, 18b, 18c, 18d),  introduces you to the techniques of quickly making a map for presentation purposes. Note: Chapter 18 is important for the Term Project!

It is estimated that it will take from 3 to 6 hours to complete this lab. Please plan accordingly, so that all the answers to this lab are submitted at the same time.

For more information on these concepts, please refer to the ESRI website.

Procedure

Complete the answers to the questions posed below. The questions are based on the work you did in completing the lab exercises above, and the reading for the lab. Please form your answers using MSWORD and attach them to an e-mail addressed to gatemail@hartford.edu. Do not e-mail your answers to the instructor's e-mail!

Questions for Lab 4

Chapter 13 - Projecting Data in ArcMap

Q1. What is a projection?

Q2. Define "geographic coordinate system" and projected coordinate system. How are they different?

Q3. How does ArcMap determine whether or not a data set is projected?

Q4. What is ArcToolbox and what was it used for in this lab?

Q5. Explain why a projected coordinate system is inherently inaccurate?

Chapter 16 - Editing Features and Attributes

Q1. What is a vertex?

Q2. How are vertices used to change polygon shapes?

Q3. What is the purpose of the field calculator?

Q4. When you split a polygon into two polygons, how are ID numbers assigned to the new polygons?

Q5. When you merge two polygons, what happens to the ID numbers of the original polygons?   

Q6. Explain the process of  converting the units of the Shape_Area field from ft2 to acres.

Chapter 18 - Making Maps Quickly

Q1. What is a map template?

Q2. What map elements are shown on the map of the Philippines?

Q3. What form of latitude and longitude is preferred by ArcMAp? Why?

Q4. What is a disadvantage of adding graphics and text to a layout?

Q5. What is the Geography Network?