Laboratory Exercise 7

 

Displaying and Editing Tables


Background

This laboratory consists of exercises from Chapter 15 of the lab text, Getting to Know ArcView GIS, with the data obtained from the accompanying CD-ROM (exercises 15a,b,c).

ArcView is a powerful desktop geographic information system (GIS) made 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.

In this exercise, you will learn to modify the appearance of a table by hiding fields (columns), changing the field names, and changing the width of a field. You will also learn how to edit values in a table, add a new field, and use the field calculator to generate values for the new field.

In this exercise, the problem posed involves determining the size of the potential market for a luxury car dealership located in Clayton County, Georgia. The GIS data that you have describes ten segments of consumer profiles (combinations of income, age education, etc.). It has been suggested to you that only two of these ten segments (columns) are needed for an analysis, and you will have to modify the appearance of the table and combine these two segments into one meaningful parameter.

Procedure

With the supervision of your instructor, or lab coordinator, use the Getting to Know ArcView GIS CD-ROM to carry out the directions of exercises 15a,b,c. The path to the exercises may vary from PC to PC, so check with the lab instructor or lab coordinate.

Report Format

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Q1. What is a reason for "hiding" fields?



Q2 What are the four different types of table column fields you can define in ArcView?



Q3 The field calculator looks somewhat like the .

Q4 Over analytical operations are supported by the field calculator.

Q5 A summary table automatically gives you a field.





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