SO432, Geographical
Information Systems
Definitions 
10@ 4 points 
40 

Short answers 
5 @ 12 points 
60 

TOTAL 

100 

This is an open book exam. You may use your personal copy of the text book and any notes you have permanently written in it. You may not attach any papers to the book, but you can tab the book.
Read the directions
carefully. You have a selection of
questions for the definitions and the short answers.
Quality of your answers is
important. For full credit you should
use correct terminology, and show that you understand the concepts involved. Demonstration of understanding, and placing
you answer in the context of
All work on this exam is individual. You may not any materials (books, notes, computers), and you may not use IM, texting, talking, or any other means to communicate with other individuals.
Definitions: define 10 of the 12 terms with a concise
sentence that clearly shows your understanding of the term: Each is worth 4 points.
1)
Lossless
compression:
2)
Forward
projection:
3)
ESRI shape
file:
4)
Metadata:
5)
Regional
operations:
6)
NGA:
7)
Quadrangle:
8)
World file:
9)
RMSE:
10) Meades
Ranch:
11) Map scale:
12) Precision:
The next five pages contain 5 questions, each of which
is worth 12 points. You can answer on
the page or on the back of one of the pages. You must answer all 5. For
each answer you should clearly show that you understand the principles and use
appropriate terminology.
1) How can you develop a feature coding scheme
for a
2) Use the diagram to answer the following questions:
·
Discuss the terms fields/attributes,
tuples/records, and relations/tables in relation to the following diagram and
indicate why it is important for
· Would this snippet of a data base work well for plotting the locations of earthquakes? Why or why not?
· Would this work for analyzing the earthquake magnitudes?
LAT 
LONG 
MAGNITUDE 

N39.83 
W121.34 
MW=7.6 

N43.76 
W118.78 
ML=6.4 

N31.23 
W132.67 
MS=5.9 

3) Why should
4) The
diagram above shows a map projection covering much of the central US.
o Explain the purpose of the markings on the map above, and what they tell you about the map projection used in the map.
o
Where
does this projection have the least distortion, and how can you tell?
o Could the military use this map for operations? Why or why not? Only use conformal maps for military operations.
o Can you suggest what projection this is? Albers equal area conic.
Raster data  Vector data 
5) What are the differences between
these two maps above, both of which came out of a