SO432, Geographical Information Systems

Exam 2, Fall 2015


Definitions (pick 5/6)




Maps (no choice)









Read directions carefully.† You have a selection of terms for the first part of the exam.† Carefully select which questions you will answer, and only answer the correct number.

Quality of your answers is important.†† For full credit you should use correct terminology, and show that you understand the concepts involved.



All work on this exam is individual using only what knowledge you have acquired.† You may not any reference materials or storage devices (books, notes, computers, stray ink on your person or uniform), and you may not use IM, texting, talking, or any other means to communicate with other individuals.




Definitions:† define 5 of these 6 terms with a concise sentence that clearly shows your understanding of the term, and not just that you can find the term in the index or glossary of the text:† Each is worth two points.


  1. 2.5D
  2. Filter a database:
  3. Integer versus floating point:
  4. Shapefile:
  5. FIPS code:
  6. Census tract:


These two maps were created by lidar.† How does lidar work, and how could these two depictions have been created with the same data collection, or would they have had to be created at different times?



What kind of data set is this?† What can it be used for?


What features are we seeing in this view, and how can you identify them?

A GIS analyst for Anne Arundel County started with the NLCD map on the left, and performed two operations to get the map on the right.


What where the two operations, what did they accomplish, and why would they be performed?


This map of Annapolis was created by the city planning department to respond to complaints about noise from the church bells in the city.† What GIS operation did they use, how does it work, and would it help them to monitor noise pollution?


Your classmates are attempting to plot the distribution of bachelorís degrees in their home county.† They think they have downloaded 4 shapefiles.† The one of the left, under the map, will not plot.† The three on the right plot, and each has a different line pattern on the map (width will be easiest to differentiate).

What is the difference among the three files that plot?

Why does the fourth file not plot?


Is there any GIS operation that can salvage the data download, or must your classmates return to ACS and get a correct download?† If so, name the operation, and state how they would proceed; if not, suggest what they initially did wrong.