Gis Data Logging Functions; Feature Libraries - Magellan MobileMapper - GPS Software User Manual

A feature library is a
hierarchical structure
that guides you through
the description pro-
cess so you know you
will describe thor-
oughly and quickly
each feature you visit.
You will not have to
remember what
attributes of each fea-
ture you should record:
the feature library will
tell you!
Example of a "stree-
tlight" point feature, as
may be described in a
feature library
List Attribute
of streetlight values
attributes
Condition
- Good
- Needs repair
- Needs paint
# of bulbs
Enter
numeric value
Closest
Street
Address
Type in
address
Feature libraries are
created using the Fea-
ture Library Editor
module in MobileMap-
per Office.

GIS Data Logging Functions

Feature Libraries

Feature libraries contain lists of features that you should be
visiting during your field sessions.
Features are four types:
- Point feature: The geometrical representation of this fea-
ture is a point. Logging this type of feature requires static
occupation at the point.
- Line feature: The geometrical representation of this fea-
ture is a line. Logging this type of feature requires that you
move along this line.
- Area feature: The geometrical representation of this fea-
ture is an area. Logging this type of feature requires that
you move along its contour or you make several static
occupations if it is a regular area (with straight sides).
- Grid feature: The geometrical representation of this fea-
ture is an array of evenly-distributed waypoints.
MobileMapper Pro will guide you to each of these way-
points where you should enter a measurement performed
at this point.
Each feature also has a number of attributes. There are three
categories of attributes:
- Menu style where the attribute values are words or phrases
that you pick off a list (e.g. a list of values for the attribute
Condition might include Good, Needs Repair, etc.; see
opposite)
- Numeric style where you select a number within a speci-
fied range (e.g. the # of bulbs might be in the range 0 to
3)
- Text style where you type in a note that can contain both
numbers and letters (e.g. the closest street address)
You can upload as many feature libraries as you want into Mo-
bileMapper Pro. Just remember that you can use only one fea-
ture library for logging data to an individual job.
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