Laboratory Exercise 4

Collecting Attribute Data for a Feature Position

Reference "The Global Positioning System and GIS, An Introduction", Michael Kennedy, Ann Arbor Press, 1996, Part 2 ISBN 1-57504-017-4.2,


This laboratory consists of an introduction to the use of the Trimble,s GeoExplorer II mapping system consisting of a pocket sized GPS data collector and Pathfinder Office - GPS processing software.

In this exercise, you will learn how to acquire a data point (as in Laboratory Exercises 1 and 2) using the GeoExplorer II unit and to record attribute data for the point using a data dictionary for later use in GIS.

For more information on these concepts, refer to the Trimble site.


A. Preparations Inside.

B. Data Collection in the Field.

C. GPS Data Processing



Group Leader Name

Group Member Names:


Group Leader Email

How many points were actually collected as "Not in Feature" and in the feature

Why were "Not in Feature" points recorded?

How much error (distance) is there between the GPS data for the feature point and the corrected location.

What were the atribute data you recorded for the assigned feature?

If this from for some reason does not work, submit your answers by way of e-mail to the address below. Be sure keep a copy of the report for your own records and to submit a copy of your map to the instructor.