GIS Exam Study Guide with Complete
Solutions
GIS - Answer-geographic information system software - allows you to envision the geographic
aspects of a body of data.
ESRI - Answer-is Environmental Systems Research Institute - the developer and supplier of GIS
how does computer hardware performan...
.mxd - Answer✔✔-is an file extension for a map document in ArcMap & is only usable within ArcMaps -
can contain map description, map layout, and embedded objects saved in the map
.mxd v. .mpk - Answer✔✔-.mxd is smaller because it doesn't contain the data in the file, it only had
pointers to the actual data and symbol sets, thus need the other data files on your computer. .mpk is a
portable file that contains .mxd file and any referenced GIS data from the document - created using a
map package (only for ArcMap 10.0 and up)
Data Formats (2) - Answer✔✔-- Vector
- Raster
Vector - Answer✔✔-a coordinate-based data model that represents geographic features as points, line,
and polygons. Points -each with its own coordinate pairs; lines & polygons have ordered lists of vertices
(x,y).
Vector features - Answer✔✔-points (water wells), lines (rivers - the last point cannot be where the first
point is), and polygons (lakes - last point is where the first point is) - usually each has attributes that
describe it
Raster - Answer✔✔-a spatial data model that defines space as an array of equally sized cells (pixels)
arranged in row and columns, and composed of single or multiple bands. Each raster cell contains an
attribute value and location coordinates.
Raster Format - Answer✔✔-Group of cells that share the same value represent the same type of
geographic feature (i.e. green pixels = forest, blue = lake).
Cell - Answer✔✔-the smallest unit of information in a raster data - a pixel.
Page 3/20
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller EmillyCharlotte. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
