Laboratory Exercise 5

 

Selecting Map Features in a View

 

Background

This laboratory consists of exercises from Chapter 13 and background reading from Chapter 3 of the lab text, Getting to Know ArcView GIS, with the data obtained from the accompanying CD-ROM (exercises 13a,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 access information of features from the database, called the attribute table. You will learn to access the attribute information by selecting the features one at a time, or as a specific group. You can also work the problem in reverse, that is define and identify the features in a view that have certain common attributes. This is accomplished using the Query Builder. With the Query Builder, you write a statement, called a query, specifying and attribute and a value. ArcView then selects all the features that match your query. You can also use the Query Builder to set which features will be displayed in a view

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 13 a,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 are two ways of finding features by selecting attributes?

Q2. Spatial overlay is defined as...

Q3. The button opens the theme's attributed table.

Q4. The button promotes selected records to the top of the table,

Q5. The button allows you to find certain text in an attribute table.

Q6. A "Query" is defined as:



Q7. The Query Builder allows you to:



Q8. "Filtering" is defined as



Q9. The is used to set the filtering parameters.




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