Laboratory Exercise 10
Creating Your Own
This laboratory consists of exercises from Chapters23&24 of
the lab text, Getting to Know ArcView GIS, with the data obtained
from the accompanying CD-ROM (exercises 23a,b,c, & 24a,b).
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, in chapter 23, you will learn how to create shapefiles
by converting existing features into shapes and by drawing new shapes.
Remember that shapefiles are the only files in which shapes are features
you can edit in ArcView.
The problem posed in chapter 23 involves creating a feature based map over
an aerial photo. As a geologist studying volcanic activity in the Mojave
Desert, New rock samples have to be added to the existing data base. An
existing theme is converted to a shape file, which then makes it editable.
In the process, you can create a smaller theme from a larger theme. You
will also create new themes and draw new shapes the theme, and save them
In chapter 24, you will learn how to edit shapes in a theme by adding,
deleting, and moving their vertices. You will also learn how to split and
merge shapes and how to set rules for updating the shape attributes. The
problem in chapter 24 involves updating sales territories, represented
by polygons. One territory has to be enlarged, and the territory of a departing
salesperson has to be split up. The exercise shows how an attribute of
a split up territory is proportioned according to the area to the target
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 23a,b,c,&24a,b,c. The path to the exercises may vary from
PC to PC, so check with the lab instructor or lab coordinate.
The following questions were taken from Chapter 23&24 and Exercises
23a,b,c&24a,b. Produce a printed copy for your own records.
Q1. Why is it advantageous to save features in a shapefile format?
Q2. What is the difference between a graphic and a shape ?
Q3. How do select all features in a theme to be converted to a shape file?
Q4. List the files formed on a hard drive when a
shapefile stored. .
Q5. How do you make a theme editable?
Q6. The function of the Autocomplete Tool is to .
Q7. How would you give the Volcano.shp theme a transparent fill pattern
to let the air photo show through?
Q8. How do you edit a shape (i.e. move a vertex) without affecting it's
Q9. When splitting Thompson's territory, what were the two values of Sales_Target
that were formed?
Q10. How were the two values in Q9 calculated?
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