GIS

Geospatial Intelligence Graduate Course Midterm Exam NAME:________________________________ Fill in the blanks and choose the correct answers. Your Midterm Exam Test consists of 2 groups of assignments:

• Assignment 1 is a Theoretical one. It consists of: 1) short answers 2) multiple-choice 3) true & false questions

• Assignment 2 is a Practical one. It is focused on applying ArcGIS for spatial analysis. Save a Final Map in .pdf format and submit to the Midterm Exam Drop Box.

GOOD LUCK!

ASSIGNMENT 1: I. SHORT ANSWERS Limit your answer to no more than 10-20 words 1. Explain the difference between attribute data and spatial data and give an example of each. Do we need to input both data to GIS? Explain your answer 2. Even with the increasing availability of digital sources, why might one still consider tracing from paper sources for a GIS project? 3. What is the difference between “spatial entities” and “continuous fields”? When we use an entity- based approach and a field-based approach. Give examples. 4. Name four DISADVANTAGES of raster data structure (name more for extra points) 1. 2. 3. 4.

5. Describe how would you create a new ArcGIS layer of the rivers (rivers.lyr), that go through three states: Virginia, Maryland and Pennsylvania? 1) 2) 3) 6. Describe the steps in reclassifying the generic map of Virginia to the map of population. What steps do you need to do? What layers/data do you need for this? 1) 2) 3)

II. MULTIPLE-CHOICE QUESTIONS Check or circle the correct answer. 1. In the World of GIS, another term for the spatial feature (object) is:

Entity  Topology  Attribute  Raster Grids 

2. Which of the following is the example of non-spatial data?

The number of rooms in an office building  The path of a highway between two cities  The vegetation patterns  The location of supermarkets in Fairfax, VA 

3. Which of the following are NOT the advantages of vector data structure?

Compact data structure  Accurate graphic representation  Overlay analysis is easy  Network analysis is easy 

III. TRUE AND FALSE QUESTIONS Mark with T=True or F=False the following statements 1. Today success or failure with GIS depends more on technology, but not on the conceptual models of space TRUE FALSE 2. GIS analyst spends much more time on creation than on verification a model TRUE FALSE 3. In a GIS attribute information and spatial information are linked to each other TRUE FALSE 4. Spatial environmental surface analysis and modeling is easy with CAD systems TRUE FALSE 5. When you select the spatial feature on a map in ArcGIS, the attribute information about the same feature has to be found and selected separately TRUE FALSE

ASSIGNMENT 2:

PRACTICAL APPLICATION RATIONALE: Imagine that you are looking for a nice place to live in the US. You like being in a small town in a fairly rural area, but within easy driving distance of an urban area for fun. You would prefer a city between 20,000 and 40,000 people, no more than 80 miles from a capital city, in a county with a population density of less than 25 persons per square mile. List the names and states of these cities in the U.S. that meet all these criteria. ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ _______________________________________________

Create a Final Map Layout with these three cities in .pdf format and submit it in the Midterm Drop Box.

CONGRATULATIONS – your test is completed!